Add readme for CLI

.gitignore

@@ -9,4 +9,6 @@ dist/
 *.sqlite
 *.sqlite-journal
 resolvedTemplate.json
-mnemonic-*
+mnemonic-*
+.xo-cli-wallet
+inv-*.json

package.json

@@ -7,7 +7,9 @@
     "dev": "SYNC_SERVER_URL=https://sync.xo.harvmaster.com tsx src/index.ts",
     "build": "tsc",
     "start": "SYNC_SERVER_URL=https://sync.xo.harvmaster.com node dist/index.js",
-    "test": "echo \"Error: no test specified\" && exit 1",
+    "test": "vitest --run",
+    "test:watch": "vitest",
+    "test:coverage": "vitest run --coverage",
     "nuke": "tsx scripts/rm-dbs.ts",
     "nuke:dry": "tsx scripts/rm-dbs.ts --dry",
     "format": "prettier --write \"**/*.{js,ts,md,json}\" --ignore-path .gitignore",
@@ -43,6 +45,7 @@
     "@types/qrcode": "^1.5.6",
     "@types/react": "^19.2.14",
     "tsx": "^4.21.0",
-    "typescript": "^5.9.3"
+    "typescript": "^5.9.3",
+    "vitest": "^4.1.2"
   }
 }

src/cli/README.md

@@ -0,0 +1,234 @@
+# XO CLI
+
+Command-line interface for the XO Engine. Create wallets, manage templates, build invitations, sign transactions, and broadcast them to the Bitcoin Cash network.
+
+## Getting Started
+
+```bash
+# Run any command via tsx from the cli/ directory
+npx tsx src/cli/index.ts <command> [options]
+```
+
+### Wallet Setup
+
+Before using most commands you need a mnemonic wallet file.
+
+```bash
+# Generate a new mnemonic and save it to a file
+xo-cli mnemonic create
+
+# Import an existing mnemonic seed phrase
+xo-cli mnemonic import page pencil stock planet limb cluster assault speak off joke private pioneer
+
+# List available mnemonic files in the current directory
+xo-cli mnemonic list
+```
+
+Mnemonic files are stored in the working directory with the prefix `mnemonic-`.
+
+### Wallet Persistence
+
+The first time you pass `-m <file>`, the choice is saved to `.xo-cli-wallet`. Subsequent commands will use that wallet automatically so you can omit `-m`.
+
+```bash
+# First run — pass the wallet explicitly
+xo-cli resource list -m mnemonic-nuclear
+
+# All future runs remember the wallet
+xo-cli resource list
+```
+
+To switch wallets, pass `-m` again with a different file.
+
+## Global Options
+
+| Flag | Description |
+|---|---|
+| `-m`, `--mnemonic-file <file>` | Mnemonic file to use (persisted after first use) |
+| `-v`, `--verbose` | Show detailed debug output |
+| `-h`, `--help` | Show help message |
+
+## Commands
+
+### `mnemonic` — Manage Wallet Files
+
+```bash
+xo-cli mnemonic create                   # Generate a new mnemonic
+xo-cli mnemonic import <seed words...>   # Import a mnemonic from seed words
+xo-cli mnemonic list                     # List mnemonic files in cwd
+```
+
+**Options:**
+- `-o <filename>` — Custom output filename for the mnemonic file.
+
+### `template` — Manage Templates
+
+```bash
+xo-cli template import <template-file>                          # Import a template
+xo-cli template list                                            # List imported templates
+xo-cli template list <category> <template-id>                   # List items in a category
+xo-cli template inspect <category> <template-id> <field>        # Inspect a specific field
+xo-cli template set-default <template-file> <output-id> <role>  # Set default locking params
+```
+
+**Categories:** `action`, `transaction`, `output`, `lockingscript`, `variable`
+
+**Example — discover what a template offers:**
+
+```bash
+xo-cli template import p2pkh-template.json
+xo-cli template list
+xo-cli template list action <template-identifier>
+```
+
+### `resource` — Manage UTXOs
+
+```bash
+xo-cli resource list               # List unreserved (spendable) UTXOs
+xo-cli resource list reserved      # List UTXOs reserved by invitations
+xo-cli resource list all           # List all UTXOs (reserved + unreserved)
+xo-cli resource unreserve <txhash:vout>   # Unreserve a specific UTXO
+xo-cli resource unreserve-all             # Unreserve all reserved UTXOs
+```
+
+Each UTXO is displayed as `<txhash>:<vout> <sats> <outputId> (height <n>)`.
+
+### `receive` — Generate a Receiving Address
+
+```bash
+xo-cli receive <template-file> <output-identifier> [role-identifier]
+```
+
+Generates a single-use BCH cash address from a template. If the role is omitted, the first available role is used.
+
+```bash
+xo-cli receive p2pkh-template.json receiveOutput receiver
+```
+
+### `invitation` — Build, Sign & Broadcast Transactions
+
+This is the core command for sending funds. An invitation goes through these stages: **create** → **sign** → **broadcast**.
+
+```bash
+xo-cli invitation create <template-file> <action-id> [options]
+xo-cli invitation append <invitation-id> [options]
+xo-cli invitation sign <invitation-id>
+xo-cli invitation broadcast <invitation-id>
+xo-cli invitation requirements <invitation-id>
+xo-cli invitation import <invitation-file>
+xo-cli invitation list
+```
+
+#### Create / Append Options
+
+| Flag | Description |
+|---|---|
+| `-var-<name> <value>` | Set a template variable (kebab-case → camelCase) |
+| `--add-input <txhash:vout>` | Add UTXO input(s), comma-separated |
+| `--add-output <id>` | Override output(s) — **omit to auto-discover from template** |
+| `--auto-inputs` | Automatically select UTXOs to cover the required amount |
+| `-role <role>` | Role identifier for variable scoping and bytecode generation |
+| `--sign` | Auto-sign after all requirements are satisfied |
+| `--broadcast` | Auto-broadcast after signing (implies `--sign`) |
+
+When inputs are provided, a **change output is automatically added** if the input total exceeds the required amount + fee (500 sats). Change below the dust threshold (546 sats) is donated as fee.
+
+Outputs are **auto-discovered from the template** when `--add-output` is omitted, so you typically don't need to specify them.
+
+#### Variable Naming
+
+Variable flags use kebab-case which maps to the template's camelCase identifiers:
+
+```
+-var-transferred-satoshis 4678  →  transferredSatoshis = "4678"
+-var-recipient-lockingscript <addr>  →  recipientLockingscript = "<addr>"
+```
+
+## Full Send Flow
+
+### One-Command Send (Recommended)
+
+With `--broadcast`, the entire create → sign → broadcast flow happens in a single invocation:
+
+```bash
+# 1. List UTXOs to pick an input
+xo-cli resource list
+
+# 2. Send in one shot
+xo-cli invitation create p2pkh-template.json sendSatoshis \
+  -var-transferred-satoshis 4678 \
+  -var-recipient-lockingscript "bitcoincash:qz..." \
+  --add-input <txhash>:<vout> \
+  -role sender \
+  --broadcast
+```
+
+Output:
+
+```
+Invitation created: abc123.json (abc123)
+Invitation signed: abc123
+Transaction broadcast: <txid>
+```
+
+### Step-by-Step Send
+
+For multi-party transactions or debugging, you can run each step separately:
+
+```bash
+# 1. Import template (only needed once)
+xo-cli template import p2pkh-template.json
+
+# 2. Check available UTXOs
+xo-cli resource list
+
+# 3. Create the invitation with variables and inputs
+xo-cli invitation create p2pkh-template.json sendSatoshis \
+  -var-transferred-satoshis 4678 \
+  -var-recipient-lockingscript "bitcoincash:qz..." \
+  --add-input <txhash>:<vout> \
+  -role sender
+
+# 4. Sign
+xo-cli invitation sign <invitation-id>
+
+# 5. Broadcast
+xo-cli invitation broadcast <invitation-id>
+```
+
+### Using Auto-Inputs
+
+Instead of manually selecting UTXOs, let the CLI pick them:
+
+```bash
+xo-cli invitation create p2pkh-template.json sendSatoshis \
+  -var-transferred-satoshis 4678 \
+  -var-recipient-lockingscript "bitcoincash:qz..." \
+  --auto-inputs \
+  -role sender \
+  --broadcast
+```
+
+## Shell Completions
+
+Tab-completion is available for bash, zsh, and fish:
+
+```bash
+# Bash
+eval "$(xo-cli completions bash)"
+
+# Zsh
+eval "$(xo-cli completions zsh)"
+
+# Fish
+xo-cli completions fish | source
+```
+
+## File Conventions
+
+| File/Pattern | Purpose |
+|---|---|
+| `mnemonic-*` | Wallet mnemonic files |
+| `.xo-cli-wallet` | Persisted wallet selection |
+| `*.json` | Invitation files (saved by create/append) |
+| `*.db` | Engine database files |

src/cli/arguments.ts

@@ -0,0 +1,80 @@
+/**
+ * CLI Argument extraction and validation.
+ * 
+ * Converts `-${key}` or `--${key}` to `key` in the args object.
+ */
+import { z } from "zod";
+
+/**
+ * Converts the CLI args to a key-value object and return the options object along with the other arguments still in the array.\
+ * eg: `xo-cli mnemonic create page pencil stock planet limb cluster assault speak off joke private pioneer -v -o mnemonic.txt` will return:
+ * {
+ *   args: ["mnemonic", "create", "page", "pencil", "stock", "planet", "limb", "cluster", "assault", "speak", "off", "joke", "private", "pioneer"],
+ *   options: {
+ *     output: "mnemonic.txt",
+ *     verbose: "true",
+ *   },
+ * }
+ * 
+ * @param args - The CLI args to convert.
+ * @returns The key-value object.
+ */
+export function convertArgsToObject(args: string[]): { args: string[], options: Record<string, string> } {
+  // Map of single-character short flags to their canonical long names
+  const shortToFull: Record<string, string> = {
+    'm': 'mnemonicFile',
+    'o': 'output',
+    'v': 'verbose',
+    'h': 'help',
+  };
+
+  // Flags that are always boolean and never consume the next argument as a value.
+  // Uses the canonical (expanded) names so the check works after short-form resolution.
+  const booleanFlags = new Set<string>([
+    'verbose',
+    'help',
+    'autoInputs',
+    'sign',
+    'broadcast',
+  ]);
+
+  const positionalArgs: string[] = [];
+  const optionsObject: Record<string, string> = {};
+
+  for (let i = 0; i < args.length; i++) {
+    const arg = args[i];
+
+    // Collect non-option arguments as positional args
+    if (!arg || !arg.startsWith("-")) {
+      if (arg) positionalArgs.push(arg);
+      continue;
+    }
+
+    // Format the option key:
+    // - Remove the leading `-`s
+    // - Convert kebab-case to camelCase
+    // - Expand known short forms to their full names
+    let key = arg.replace(/^-+/, "").replace(/-([a-z])/g, (_, letter) => letter.toUpperCase());
+    key = shortToFull[key] ?? key;
+
+    // Known boolean flags never take a value
+    if (booleanFlags.has(key)) {
+      optionsObject[key] = "true";
+      continue;
+    }
+
+    const nextArg = args[i + 1];
+
+    // If there's no next arg or it starts with `-`, treat this as a boolean flag
+    if (!nextArg || nextArg.startsWith("-")) {
+      optionsObject[key] = "true";
+      continue;
+    }
+
+    // Consume the next arg as the value and skip it in the next iteration
+    optionsObject[key] = nextArg;
+    i++;
+  }
+
+  return { args: positionalArgs, options: optionsObject };
+}

src/cli/cli-utils.ts

@@ -0,0 +1,48 @@
+import util from "node:util";
+
+/**
+ * Text formatting utilities for the CLI.
+ * 
+ * Uses ANSI escape codes to format text.
+ * 
+ * AI Generated links:
+ * @see https://en.wikipedia.org/wiki/ANSI_escape_code
+ * @see https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_(Select_Graphic_Rendition)_parameters
+ * @see https://en.wikipedia.org/wiki/ANSI_escape_code#Colors
+ * @see https://en.wikipedia.org/wiki/ANSI_escape_code#Formatting
+ * @see https://en.wikipedia.org/wiki/ANSI_escape_code#Cursor_movement
+ * @see https://en.wikipedia.org/wiki/ANSI_escape_code#Screen_manipulation
+ */
+
+const BOLD = "\x1b[1m";
+export const bold = (text: string) => `${BOLD}${text}${RESET}`;
+
+const DIM = "\x1b[2m";
+export const dim = (text: string) => `${DIM}${text}${RESET}`;
+
+const UNDERLINE = "\x1b[4m";
+export const underline = (text: string) => `${UNDERLINE}${text}${RESET}`;
+
+const INVERSE = "\x1b[7m";
+export const inverse = (text: string) => `${INVERSE}${text}${RESET}`;
+
+const HIDDEN = "\x1b[8m";
+export const hidden = (text: string) => `${HIDDEN}${text}${RESET}`;
+
+const STRIKETHROUGH = "\x1b[9m";
+export const strikethrough = (text: string) => `${STRIKETHROUGH}${text}${RESET}`;
+
+const RESET = "\x1b[0m";
+export const reset = (text: string) => `${RESET}${text}${RESET}`;
+
+export const formatObject = (obj: unknown) => {
+  return util.inspect(obj, {
+    depth: null,
+    colors: true,
+    compact: false
+  });
+};
+
+export const objectPrint = (obj: unknown) => {
+  console.log(formatObject(obj));
+};

src/cli/commands/index.ts

@@ -0,0 +1,7 @@
+export type { CommandDependencies } from "./types.js";
+
+export { handleMnemonicCommand, printMnemonicHelp } from "./mnemonic.js";
+export { handleTemplateCommand, printTemplateHelp } from "./template.js";
+export { handleInvitationCommand, printInvitationHelp } from "./invitation.js";
+export { handleReceiveCommand, printReceiveHelp } from "./receive.js";
+export { handleResourceCommand, printResourceHelp } from "./resource.js";

src/cli/commands/invitation.ts

@@ -0,0 +1,562 @@
+import { existsSync, readFileSync, writeFileSync } from "fs";
+import path from "path";
+import { generateTemplateIdentifier } from "@xo-cash/engine";
+import { binToHex, hexToBin } from "@bitauth/libauth";
+
+import { bold, dim, formatObject } from "../cli-utils.js";
+import type { CommandDependencies } from "./types.js";
+import type { Invitation } from "../../services/invitation.js";
+import {
+  resolveProvidedLockingBytecodeHex,
+  mapUnspentOutputsToSelectable,
+  autoSelectGreedyUtxos,
+} from "../../utils/invitation-flow.js";
+import { encodeExtendedJson } from "../../utils/ext-json.js";
+
+const DEFAULT_FEE = 500n;
+const DUST_THRESHOLD = 546n;
+
+/**
+ * Result of parsing CLI options into inputs and outputs for an append call.
+ * A `null` return signals a fatal error that was already logged to stderr.
+ */
+interface BuildAppendResult {
+  inputs: { outpointTransactionHash: Uint8Array; outpointIndex: number }[];
+  outputs: any[];
+}
+
+/**
+ * Extracts invitation variables from CLI option flags.
+ * Keys starting with "var" are treated as variables — the prefix is stripped
+ * and the next character is lowercased to reconstruct the camelCase identifier.
+ *
+ * When a `-role` flag is present the role identifier is attached to every
+ * variable so the engine stores them under the correct role-level requirements.
+ *
+ * @example `-var-requested-satoshis 1000 -role sender` → `{ variableIdentifier: "requestedSatoshis", value: "1000", roleIdentifier: "sender" }`
+ */
+function parseVariablesFromOptions(
+  options: Record<string, string>,
+): { variableIdentifier: string; value: string; roleIdentifier?: string }[] {
+  const roleIdentifier = options["role"];
+
+  return Object.entries(options)
+    .filter(([key]) => key.startsWith("var"))
+    .map(([key, value]) => ({
+      variableIdentifier: key.substring(3, 4).toLowerCase() + key.substring(4),
+      value,
+      ...(roleIdentifier ? { roleIdentifier } : {}),
+    }));
+}
+
+/**
+ * Parses CLI options into the inputs and outputs needed for an invitation
+ * append call. Shared by both `create` and `append` so the same flags
+ * (`--add-input`, `--add-output`, `--auto-inputs`, `-role`) work in either.
+ *
+ * Variables should already be committed to the invitation before calling this
+ * so that `getSatsOut()` can resolve variable-dependent output values for the
+ * automatic change calculation.
+ *
+ * @param deps - Command dependencies (engine, logger, etc.)
+ * @param invitation - The invitation instance (variables should already be committed).
+ * @param options - Parsed CLI option flags.
+ * @returns The structured params, or `null` when a fatal error was printed.
+ */
+async function buildAppendParams(
+  deps: CommandDependencies,
+  invitation: Invitation,
+  options: Record<string, string>,
+): Promise<BuildAppendResult | null> {
+  // --- Inputs ---
+  // Accepts comma-separated <txhash>:<vout> pairs via --add-input,
+  // OR automatic selection via --auto-inputs.
+  let inputs: { outpointTransactionHash: Uint8Array; outpointIndex: number }[] = [];
+
+  if (options["autoInputs"] === "true") {
+    // Auto-select UTXOs using the greedy algorithm from invitation-flow.
+    const suitableResources = await invitation.findSuitableResources();
+    const selectable = mapUnspentOutputsToSelectable(suitableResources);
+
+    const requiredWithFee = (await invitation.getSatsOut().catch(() => 0n)) + DEFAULT_FEE;
+    autoSelectGreedyUtxos(selectable, requiredWithFee);
+
+    inputs = selectable
+      .filter((u) => u.selected)
+      .map((u) => ({
+        outpointTransactionHash: hexToBin(u.outpointTransactionHash),
+        outpointIndex: u.outpointIndex,
+      }));
+
+    if (inputs.length === 0) {
+      console.error("No suitable UTXOs found for auto-input selection.");
+      return null;
+    }
+    deps.verboseLogger(`Auto-selected ${inputs.length} input(s)`);
+  } else if (options["addInput"]) {
+    inputs = options["addInput"].split(",").map((entry) => {
+      const separatorIndex = entry.lastIndexOf(":");
+      if (separatorIndex === -1) {
+        throw new Error(`Invalid input format "${entry}". Expected <txhash>:<vout> (e.g. abc123:0)`);
+      }
+      const txHash = entry.substring(0, separatorIndex);
+      const vout = parseInt(entry.substring(separatorIndex + 1), 10);
+      if (!txHash || isNaN(vout)) {
+        throw new Error(`Invalid input format "${entry}". Expected <txhash>:<vout> (e.g. abc123:0)`);
+      }
+      return {
+        outpointTransactionHash: hexToBin(txHash),
+        outpointIndex: vout,
+      };
+    });
+  }
+  deps.verboseLogger(`Inputs: ${formatObject(inputs.map(i => ({ txHash: binToHex(i.outpointTransactionHash), vout: i.outpointIndex })))}`);
+
+  // --- Outputs ---
+  // When --add-output is provided, use those identifiers explicitly.
+  // Otherwise, auto-discover all required outputs from the template so the
+  // user doesn't have to name them manually.
+  const roleIdentifier = options["role"];
+  let outputIdentifiers: string[] = [];
+
+  if (options["addOutput"]) {
+    outputIdentifiers = options["addOutput"].split(",");
+  } else {
+    // Pull every output identifier the template requires (top-level + role-specific).
+    const requirements = await invitation.getRequirements();
+    const discovered = new Set<string>();
+    for (const id of requirements.outputs ?? []) discovered.add(id);
+    if (requirements.roles) {
+      for (const role of Object.values(requirements.roles)) {
+        for (const id of role.outputs ?? []) discovered.add(id);
+      }
+    }
+    outputIdentifiers = [...discovered];
+    if (outputIdentifiers.length > 0) {
+      deps.verboseLogger(`Auto-discovered output(s) from template: ${outputIdentifiers.join(", ")}`);
+    }
+  }
+
+  // Build a variable-values map from all committed variables so
+  // resolveProvidedLockingBytecodeHex can resolve outputs whose locking
+  // script depends on a variable (e.g. <recipientLockingscript>).
+  const variableValuesByIdentifier: Record<string, string> = {};
+  for (const commit of invitation.data.commits) {
+    for (const v of commit.data?.variables ?? []) {
+      if (v.variableIdentifier && typeof v.value === "string") {
+        variableValuesByIdentifier[v.variableIdentifier] = v.value;
+      }
+    }
+  }
+
+  const template = await deps.app.engine.getTemplate(invitation.data.templateIdentifier);
+
+  const outputs: any[] = await Promise.all(
+    outputIdentifiers.map(async (outputId) => {
+      // Try variable-based resolution first (e.g. sendSatoshis → recipientLockingscript)
+      const providedHex = template
+        ? resolveProvidedLockingBytecodeHex(template, outputId, variableValuesByIdentifier)
+        : undefined;
+
+      const lockingBytecodeHex = providedHex
+        ?? await invitation.generateLockingBytecode(outputId, roleIdentifier);
+
+      deps.verboseLogger(`Locking bytecode for output "${outputId}": ${lockingBytecodeHex}`);
+      return {
+        outputIdentifier: outputId,
+        lockingBytecode: new Uint8Array(Buffer.from(lockingBytecodeHex, "hex")),
+      };
+    }),
+  );
+  deps.verboseLogger(`Outputs: ${formatObject(outputs.map(o => o.outputIdentifier))}`);
+
+  // --- Auto change output ---
+  // When inputs are provided, look up each UTXO's value, compute the
+  // required sats, and return the excess minus fees back to the user.
+  if (inputs.length > 0) {
+    const allUtxos = await deps.app.engine.listUnspentOutputsData();
+    const utxoMap = new Map(allUtxos.map(u => [`${u.outpointTransactionHash}:${u.outpointIndex}`, u]));
+
+    let totalInputSats = 0n;
+    for (const input of inputs) {
+      const txHashHex = binToHex(input.outpointTransactionHash);
+      const utxo = utxoMap.get(`${txHashHex}:${input.outpointIndex}`);
+      if (!utxo) {
+        console.error(`UTXO not found: ${txHashHex}:${input.outpointIndex}. Make sure it exists in your wallet.`);
+        return null;
+      }
+      totalInputSats += BigInt(utxo.valueSatoshis);
+    }
+    deps.verboseLogger(`Total input value: ${totalInputSats} satoshis`);
+
+    const requiredSats = await invitation.getSatsOut();
+    deps.verboseLogger(`Required output value: ${requiredSats} satoshis`);
+
+    const changeAmount = totalInputSats - requiredSats - DEFAULT_FEE;
+    deps.verboseLogger(`Change amount: ${changeAmount} satoshis (fee: ${DEFAULT_FEE})`);
+
+    if (changeAmount < 0n) {
+      console.error(`Insufficient funds. Inputs total ${totalInputSats} sats, but need ${requiredSats + DEFAULT_FEE} sats (${requiredSats} required + ${DEFAULT_FEE} fee).`);
+      return null;
+    }
+
+    if (changeAmount >= DUST_THRESHOLD) {
+      outputs.push({ valueSatoshis: changeAmount });
+      console.log(`Auto-adding change output: ${changeAmount} satoshis`);
+    } else if (changeAmount > 0n) {
+      console.log(`Change ${changeAmount} sats is below dust threshold (${DUST_THRESHOLD} sats), donating to miners as fee.`);
+    }
+  }
+
+  return { inputs, outputs };
+}
+
+/**
+ * Prints the help message for the invitation command
+ */
+export const printInvitationHelp = () => {
+  console.log(
+`
+${bold("Usage:")} xo-cli invitation <sub-command>
+
+${bold("Sub-commands:")}
+    - create <template-file> <action-id> ${dim("Create a new invitation")}
+    - append <invitation-id> ${dim("Add variables/outputs to an invitation")}
+    - sign <invitation-id> ${dim("Sign an invitation")}
+    - broadcast <invitation-id> ${dim("Broadcast an invitation")}
+    - requirements <invitation-id> ${dim("Show requirements for an invitation")}
+    - import <invitation-file> ${dim("Import an invitation from a file")}
+    - list ${dim("List all invitations")}
+
+${bold("Create / Append options:")}
+    -var-<name> <value>       ${dim("Set a variable (e.g. -var-requested-satoshis 1000)")}
+    --add-input <txhash:vout> ${dim("Add UTXO input(s), comma-separated (e.g. abc123:0,def456:1)")}
+    --add-output <id>         ${dim("Override output(s) — omit to auto-discover from template")}
+    --auto-inputs             ${dim("Automatically select UTXOs as inputs")}
+    -role <role>              ${dim("Role for output bytecode generation (fallback)")}
+    --sign                    ${dim("Auto-sign after all requirements are satisfied")}
+    --broadcast               ${dim("Auto-broadcast after signing (implies --sign)")}
+
+    ${dim("When inputs are provided, a change output is automatically added if the")}
+    ${dim("input total exceeds the required amount + fee.")}
+  `);
+};
+
+/**
+ * Handles the invitation command.
+ * @param deps - The command dependencies.
+ * @param args - Positional args after the command name, e.g. ["create", "template.json", "action-id"].
+ * @param options - Parsed option flags, e.g. { varRequestedSatohis: "1000", role: "receiver" }.
+ */
+export const handleInvitationCommand = async (deps: CommandDependencies, args: string[], options: Record<string, string>): Promise<void> => {
+  const subCommand = args[0];
+  deps.verboseLogger(`Invitation sub-command: ${subCommand}`);
+
+  if (!subCommand) {
+    deps.verboseLogger("No sub-command provided");
+    printInvitationHelp();
+    return;
+  }
+
+  switch (subCommand) {
+    case "create": {
+      const templateFile = args[1];
+      const actionIdentifier = args[2];
+      deps.verboseLogger(`Template file: ${templateFile}, action identifier: ${actionIdentifier}`);
+
+      if (!templateFile || !actionIdentifier) {
+        deps.verboseLogger("No template file or action identifier provided");
+        printInvitationHelp();
+        return;
+      }
+
+      // Resolve and validate the template file path
+      const templatePath = path.resolve(`${process.cwd()}/${templateFile}`);
+      deps.verboseLogger(`Template path: ${templatePath}`);
+
+      if (!existsSync(templatePath)) {
+        console.error(`Template file does not exist: ${templatePath}`);
+        printInvitationHelp();
+        return;
+      }
+
+      const template = await readFileSync(templatePath, "utf8");
+      const templateIdentifier = generateTemplateIdentifier(JSON.parse(template));
+
+      // Create the base invitation via the engine
+      const rawInvitation = await deps.app.engine.createInvitation({
+        templateIdentifier: templateIdentifier,
+        actionIdentifier: actionIdentifier,
+      });
+      deps.verboseLogger(`XOInvitation created: ${formatObject(rawInvitation)}`);
+
+      const invitationInstance = await deps.app.createInvitation(rawInvitation);
+      deps.verboseLogger(`Invitation created: ${formatObject(invitationInstance.data)}`);
+
+      // Commit variables first so getSatsOut can resolve them for change calc
+      // and resolveProvidedLockingBytecodeHex can read them from commits.
+      const variables = parseVariablesFromOptions(options);
+      deps.verboseLogger(`Variables: ${formatObject(variables)}`);
+      if (variables.length > 0) {
+        await invitationInstance.addVariables(variables);
+      }
+
+      // Parse inputs/outputs and calculate change (variables are now committed)
+      const params = await buildAppendParams(deps, invitationInstance, options);
+      if (!params) return;
+
+      const { inputs, outputs } = params;
+
+      if (inputs.length > 0 || outputs.length > 0) {
+        await invitationInstance.append({ inputs, outputs });
+      }
+
+      // Save the invitation to a file
+      const invitationFilePath = `${process.cwd()}/inv-${invitationInstance.data.invitationIdentifier}.json`;
+      deps.verboseLogger(`Invitation file path: ${invitationFilePath}`);
+      writeFileSync(invitationFilePath, encodeExtendedJson(invitationInstance.data, 2));
+      console.log(`Invitation created: ${path.basename(invitationFilePath)} (${invitationInstance.data.invitationIdentifier})`);
+
+      // Check remaining requirements
+      const missingRequirements = await invitationInstance.getMissingRequirements();
+      const hasMissing =
+        (missingRequirements.variables?.length ?? 0) > 0 ||
+        (missingRequirements.inputs?.length ?? 0) > 0 ||
+        (missingRequirements.outputs?.length ?? 0) > 0 ||
+        (missingRequirements.roles !== undefined && Object.keys(missingRequirements.roles).length > 0);
+
+      if (hasMissing) {
+        console.log(`\n${bold("Remaining requirements:")}`);
+        console.log(formatObject(missingRequirements));
+      } else {
+        // --broadcast implies --sign
+        const shouldSign = options["sign"] === "true" || options["broadcast"] === "true";
+        const shouldBroadcast = options["broadcast"] === "true";
+
+        if (shouldSign) {
+          await invitationInstance.sign();
+          console.log(`Invitation signed: ${invitationInstance.data.invitationIdentifier}`);
+        }
+
+        if (shouldBroadcast) {
+          const txHash = await invitationInstance.broadcast();
+          console.log(`Transaction broadcast: ${bold(txHash)}`);
+        } else if (!shouldSign) {
+          console.log(`\n${bold("All requirements satisfied.")} You can now sign with: xo-cli invitation sign ${invitationInstance.data.invitationIdentifier}`);
+        }
+      }
+      break;
+    }
+
+    case "append": {
+      const invitationIdentifier = args[1];
+      deps.verboseLogger(`Invitation identifier: ${invitationIdentifier}`);
+
+      if (!invitationIdentifier) {
+        deps.verboseLogger("No invitation identifier provided");
+        printInvitationHelp();
+        return;
+      }
+
+      // Find the invitation by identifier
+      const invitation = deps.app.invitations.find(inv => inv.data.invitationIdentifier === invitationIdentifier);
+      if (!invitation) {
+        console.error(`Invitation not found: ${invitationIdentifier}`);
+        return;
+      }
+      deps.verboseLogger(`Invitation: ${formatObject(invitation.data)}`);
+
+      // Commit variables first so getSatsOut can resolve them for change calc
+      const variables = parseVariablesFromOptions(options);
+      deps.verboseLogger(`Variables to append: ${formatObject(variables)}`);
+      if (variables.length > 0) {
+        await invitation.addVariables(variables);
+      }
+
+      // Parse inputs/outputs and calculate change (variables are now committed)
+      const params = await buildAppendParams(deps, invitation, options);
+      if (!params) return;
+
+      const { inputs, outputs } = params;
+
+      if (variables.length === 0 && inputs.length === 0 && outputs.length === 0) {
+        console.error("Nothing to append. Provide variables (-var-<name> <value>), inputs (--add-input <txhash>:<vout>), or outputs (--add-output <identifier>).");
+        return;
+      }
+
+      if (inputs.length > 0 || outputs.length > 0) {
+        await invitation.append({ inputs, outputs });
+      }
+      deps.verboseLogger(`Invitation appended: ${formatObject(invitation.data)}`);
+      console.log(`Invitation appended: ${invitationIdentifier}`);
+
+      // Save the updated invitation to a file
+      const invitationFilePath = `${process.cwd()}/inv-${invitation.data.invitationIdentifier}.json`;
+      writeFileSync(invitationFilePath, encodeExtendedJson(invitation.data, 2));
+      console.log(`Invitation updated: ${path.basename(invitationFilePath)} (${invitation.data.invitationIdentifier})`);
+
+      // Check remaining requirements
+      const missingRequirements = await invitation.getMissingRequirements();
+      const hasMissing =
+        (missingRequirements.variables?.length ?? 0) > 0 ||
+        (missingRequirements.inputs?.length ?? 0) > 0 ||
+        (missingRequirements.outputs?.length ?? 0) > 0 ||
+        (missingRequirements.roles !== undefined && Object.keys(missingRequirements.roles).length > 0);
+
+      if (hasMissing) {
+        console.log(`\n${bold("Remaining requirements:")}`);
+        console.log(formatObject(missingRequirements));
+      } else {
+        const shouldSign = options["sign"] === "true" || options["broadcast"] === "true";
+        const shouldBroadcast = options["broadcast"] === "true";
+
+        if (shouldSign) {
+          await invitation.sign();
+          console.log(`Invitation signed: ${invitationIdentifier}`);
+        }
+
+        if (shouldBroadcast) {
+          const txHash = await invitation.broadcast();
+          console.log(`Transaction broadcast: ${bold(txHash)}`);
+        } else if (!shouldSign) {
+          console.log(`\n${bold("All requirements satisfied.")} You can now sign with: xo-cli invitation sign ${invitationIdentifier}`);
+        }
+      }
+      break;
+    }
+
+    case "sign": {
+      const invitationIdentifier = args[1];
+      deps.verboseLogger(`Invitation identifier: ${invitationIdentifier}`);
+
+      // Check if the invitation identifier is provided
+      if (!invitationIdentifier) {
+        deps.verboseLogger("No invitation identifier provided");
+        printInvitationHelp();
+        return;
+      }
+
+      // Find the invitation by identifier
+      const invitation = await deps.app.invitations.find(invitation => invitation.data.invitationIdentifier === invitationIdentifier);
+      if (!invitation) {
+        console.error(`Invitation not found: ${invitationIdentifier}`);
+        return;
+      }
+      deps.verboseLogger(`Invitation: ${formatObject(invitation.data)}`);
+
+      // Sign the invitation
+      await invitation.sign();
+      deps.verboseLogger(`Invitation signed: ${formatObject(invitation.data)}`);
+      console.log(`Invitation signed: ${invitationIdentifier}`);
+      break;
+    }
+
+    case "broadcast": {
+      const invitationIdentifier = args[1];
+      deps.verboseLogger(`Invitation identifier: ${invitationIdentifier}`);
+
+      // Check if the invitation identifier is provided
+      if (!invitationIdentifier) {
+        deps.verboseLogger("No invitation identifier provided");
+        printInvitationHelp();
+        return;
+      }
+
+      // Find the invitation by identifier
+      const invitation = await deps.app.invitations.find(invitation => invitation.data.invitationIdentifier === invitationIdentifier);
+      if (!invitation) {
+        console.error(`Invitation not found: ${invitationIdentifier}`);
+        return;
+      }
+      deps.verboseLogger(`Invitation: ${formatObject(invitation.data)}`);
+
+      // Broadcast the invitation
+      const txHash = await invitation.broadcast();
+      deps.verboseLogger(`Invitation broadcasted: ${formatObject(invitation.data)}`);
+      console.log(`Transaction broadcast: ${bold(txHash)}`);
+      break;
+    }
+
+    case "requirements": {
+      const invitationIdentifier = args[1];
+      deps.verboseLogger(`Invitation identifier: ${invitationIdentifier}`);
+
+      // Check if the invitation identifier is provided
+      if (!invitationIdentifier) {
+        deps.verboseLogger("No invitation identifier provided");
+        printInvitationHelp();
+        return;
+      }
+
+      // Find the invitation by identifier
+      const invitation = await deps.app.invitations.find(invitation => invitation.data.invitationIdentifier === invitationIdentifier);
+      if (!invitation) {
+        console.error(`Invitation not found: ${invitationIdentifier}`);
+        return;
+      }
+      deps.verboseLogger(`Invitation: ${formatObject(invitation.data)}`);
+
+      // List the requirements for the invitation
+      const requirements = await deps.app.engine.listRequirements(invitation.data);
+      deps.verboseLogger(`Requirements: ${formatObject(requirements)}`);
+      console.log(formatObject(requirements));
+      break;
+    }
+
+    case "import": {
+      // Check if the invitation file path is provided
+      const invitationFilePath = args[1];
+      deps.verboseLogger(`Invitation file path: ${invitationFilePath}`);
+      
+      // Check if the invitation file path is provided
+      if (!invitationFilePath) {
+        deps.verboseLogger("No invitation file provided");
+        printInvitationHelp();
+        return;
+      }
+
+      // Read the invitation file
+      const invitationFile = await readFileSync(invitationFilePath, "utf8");
+      deps.verboseLogger(`Invitation file: ${invitationFile}`);
+
+      // Parse the invitation file
+      const invitation = JSON.parse(invitationFile);
+      deps.verboseLogger(`Invitation: ${formatObject(invitation)}`);
+
+      // Create the invitation (internal to XO Engine)
+      const xoInvitation = await deps.app.engine.createInvitation(invitation);
+
+      // Create the invitation instance
+      const invitationInstance = await deps.app.createInvitation(xoInvitation);
+      deps.verboseLogger(`Invitation created: ${formatObject(invitationInstance.data)}`);
+      break;
+    }
+
+    case "list": {
+      // List all invitations
+      const invitations = await Promise.all(deps.app.invitations.map(async invitation => {
+        // Get the template for the invitation so we can display the name of it
+        const template = await deps.app.engine.getTemplate(invitation.data.templateIdentifier);
+        return {
+          invitationIdentifier: invitation.data.invitationIdentifier,
+          templateIdentifier: invitation.data.templateIdentifier,
+          actionIdentifier: invitation.data.actionIdentifier,
+          templateName: template?.name ?? "Unknown",
+          status: invitation.status,
+          roleIdentifier: 'TODO: Get role identifier',
+        };
+      }));
+      deps.verboseLogger(`Invitations: ${formatObject(invitations)}`);
+
+      // Format the invitations for display and print it
+      const formattedInvitations = invitations.map(invitation => `${bold(invitation.templateName)} ${dim(invitation.status)} ${dim(invitation.invitationIdentifier)} ${dim(invitation.actionIdentifier)} (${dim(invitation.roleIdentifier)})`);
+      console.log(formattedInvitations.join('\n'));
+      break;
+    }
+
+    default:
+      deps.verboseLogger(`Unknown invitation sub-command: ${subCommand}`);
+      printInvitationHelp();
+      return;
+  }
+};

src/cli/commands/mnemonic.ts

@@ -0,0 +1,73 @@
+import { bold, dim } from "../cli-utils.js";
+import { listMnemonicFiles, createMnemonicFile, createMnemonicSeed } from "../mnemonic.js";
+import type { CommandDependencies } from "./types.js";
+
+/**
+ * Prints the help message for the mnemonic command
+ */
+export const printMnemonicHelp = () => {
+  console.log(
+`
+${bold("Usage:")} xo-cli mnemonic <sub-command>
+
+${bold("Sub-commands:")}
+    - create <mnemonic-seed> ${dim("Create a new mnemonic file")}
+    - list ${dim("List all mnemonic files")}
+
+${bold("Options:")}
+    -o --output <output-filename> ${dim("Output filename for the mnemonic file")}
+    -h --help ${dim("Show this help message")}
+`);
+};
+
+/**
+ * Handles the mnemonic command.
+ * @param deps - The command dependencies.
+ * @param args - Positional args after the command name, e.g. ["create"] or ["import", "page", "pencil", ...].
+ * @param options - Parsed option flags, e.g. { output: "mnemonic.txt" }.
+ */
+export const handleMnemonicCommand = async (deps: Omit<CommandDependencies, "app">, args: string[], options: Record<string, string>): Promise<void> => {
+  const subCommand = args[0];
+
+  if (!subCommand) {
+    deps.verboseLogger("No sub-command provided");
+    printMnemonicHelp();
+    return;
+  }
+
+  switch (subCommand) {
+    case "create": {
+      const mnemonicSeed = createMnemonicSeed();
+      await createMnemonicFile(mnemonicSeed, options["output"]);
+
+      console.log(`Mnemonic file created: ${options["output"]} (${mnemonicSeed})`);
+      break;
+    }
+
+    case "import": {
+      // The mnemonic seed words are all the positional args after the sub-command
+      const mnemonicSeed = args.slice(1).join(" ");
+
+      if (!mnemonicSeed) {
+        deps.verboseLogger("No mnemonic seed provided");
+        printMnemonicHelp();
+        return;
+      }
+
+      deps.verboseLogger(`Mnemonic seed: ${mnemonicSeed}`);
+      await createMnemonicFile(mnemonicSeed, options["output"]);
+      break;
+    }
+
+    case "list": {
+      const mnemonicFiles = listMnemonicFiles();
+      console.log(mnemonicFiles.join('\n'));
+      break;
+    }
+
+    default:
+      console.error(`Unknown sub-command: ${subCommand}`);
+      printMnemonicHelp();
+      return;
+  }
+};

src/cli/commands/receive.ts

@@ -0,0 +1,80 @@
+import { existsSync, readFileSync } from "fs";
+import path from "path";
+import { generateTemplateIdentifier } from "@xo-cash/engine";
+import { hexToBin, lockingBytecodeToCashAddress } from "@bitauth/libauth";
+
+import { bold, dim } from "../cli-utils.js";
+import type { CommandDependencies } from "./types.js";
+
+/**
+ * Prints the help message for the receive command
+ */
+export const printReceiveHelp = () => {
+  console.log(
+`
+${bold("Usage:")} xo-cli receive <template-file> <output-identifier> [role-identifier]
+
+${bold("Description:")}
+    Generate a single-use receiving address from a template.
+
+${bold("Arguments:")}
+    <template-file>       ${dim("Path to the template JSON file")}
+    <output-identifier>   ${dim("The output identifier within the template (e.g. 'receiveOutput')")}
+    [role-identifier]     ${dim("The role identifier (e.g. 'receiver'). Auto-selects the first role if omitted.")}
+
+${bold("Options:")}
+    -h --help ${dim("Show this help message")}
+`);
+};
+
+/**
+ * Command which creates a single-use address/lockingScript for a given template and role.
+ * @param deps - The command dependencies.
+ * @param args - Positional args after the command name, e.g. ["template.json", "receiveOutput", "receiver"].
+ * @param options - Parsed option flags.
+ */
+export const handleReceiveCommand = async (deps: CommandDependencies, args: string[], options: Record<string, string>): Promise<void> => {
+  const templateFile = args[0];
+  const outputIdentifier = args[1];
+  const roleIdentifier = args[2];
+
+  deps.verboseLogger(`Receive args - template: ${templateFile}, output: ${outputIdentifier}, role: ${roleIdentifier}`);
+
+  if (!templateFile || !outputIdentifier) {
+    deps.verboseLogger("Missing required arguments");
+    printReceiveHelp();
+    return;
+  }
+
+  // Resolve and read the template file
+  const templatePath = path.resolve(`${process.cwd()}/${templateFile}`);
+  deps.verboseLogger(`Template path: ${templatePath}`);
+
+  if (!existsSync(templatePath)) {
+    console.error(`Template file does not exist: ${templatePath}`);
+    printReceiveHelp();
+    return;
+  }
+
+  const template = readFileSync(templatePath, "utf8");
+  const templateIdentifier = generateTemplateIdentifier(JSON.parse(template));
+  deps.verboseLogger(`Template identifier: ${templateIdentifier}`);
+
+  // Generate the locking bytecode (returned as a hex string)
+  const lockingBytecodeHex = await deps.app.engine.generateLockingBytecode(
+    templateIdentifier,
+    outputIdentifier,
+    roleIdentifier,
+  );
+  deps.verboseLogger(`Locking bytecode hex: ${lockingBytecodeHex}`);
+
+  // Convert the locking bytecode to a BCH cash address
+  const result = lockingBytecodeToCashAddress({ bytecode: hexToBin(lockingBytecodeHex), prefix: 'bitcoincash' });
+
+  if (typeof result === 'string') {
+    console.error(`Failed to encode address: ${result}`);
+    return;
+  }
+
+  console.log(result.address);
+};

src/cli/commands/resource.ts

@@ -0,0 +1,145 @@
+import { hexToBin } from "@bitauth/libauth";
+
+import { bold, dim } from "../cli-utils.js";
+import type { CommandDependencies } from "./types.js";
+
+/**
+ * Prints the help message for the resource command.
+ */
+export const printResourceHelp = () => {
+  console.log(
+`
+${bold("Usage:")} xo-cli resource <sub-command>
+
+${bold("Sub-commands:")}
+    - list                  ${dim("List all unreserved resources")}
+    - list reserved         ${dim("List reserved resources")}
+    - list all              ${dim("List all resources (reserved + unreserved)")}
+    - unreserve <txhash:vout> ${dim("Unreserve a specific UTXO")}
+    - unreserve-all         ${dim("Unreserve all reserved UTXOs")}
+  `);
+};
+
+/**
+ * Formats a single UTXO for display, optionally including reservation info.
+ */
+function formatResource(resource: { outpointTransactionHash: string; outpointIndex: number; valueSatoshis: number; outputIdentifier: string; minedAtHeight: number; reserved?: boolean; invitationIdentifier?: string }, showReserved = false): string {
+  const outpoint = bold(`${resource.outpointTransactionHash}:${resource.outpointIndex}`);
+  const value = dim(`${resource.valueSatoshis} sats`);
+  const output = dim(resource.outputIdentifier);
+  const height = dim(`(height ${resource.minedAtHeight})`);
+
+  if (showReserved && resource.reserved) {
+    const inv = dim(`reserved for ${resource.invitationIdentifier}`);
+    return `${outpoint} ${value} ${output} ${height} ${inv}`;
+  }
+
+  return `${outpoint} ${value} ${output} ${height}`;
+}
+
+/**
+ * Handles the resource command.
+ * @param deps - The command dependencies.
+ * @param args - Positional args after the command name, e.g. ["list"].
+ * @param options - Parsed option flags.
+ */
+export const handleResourceCommand = async (deps: CommandDependencies, args: string[], options: Record<string, string>): Promise<void> => {
+  const subCommand = args[0];
+  deps.verboseLogger(`Resource sub-command: ${subCommand}`);
+
+  if (!subCommand) {
+    deps.verboseLogger("No sub-command provided");
+    printResourceHelp();
+    return;
+  }
+
+  switch (subCommand) {
+    case "list": {
+      const qualifier = args[1]; // "reserved", "all", or undefined (defaults to unreserved)
+      const allResources = await deps.app.engine.listUnspentOutputsData();
+
+      let filtered;
+      if (qualifier === "reserved") {
+        filtered = allResources.filter((r) => r.reserved);
+      } else if (qualifier === "all") {
+        filtered = allResources;
+      } else {
+        // Default: show only unreserved (selectable) resources
+        filtered = allResources.filter((r) => !r.reserved);
+      }
+
+      if (filtered.length === 0) {
+        console.log(dim("No resources found."));
+        return;
+      }
+
+      const showReserved = qualifier === "all" || qualifier === "reserved";
+      const formattedResources = filtered.map((r) => formatResource(r, showReserved));
+      console.log(formattedResources.join("\n"));
+      console.log(`Total satoshis: ${filtered.reduce((acc, r) => acc + r.valueSatoshis, 0)}`);
+      console.log(`Total resources: ${filtered.length}`);
+      break;
+    }
+
+    case "unreserve": {
+      const outpointArg = args[1];
+      if (!outpointArg) {
+        console.error("Please provide a UTXO in <txhash>:<vout> format.");
+        printResourceHelp();
+        return;
+      }
+
+      const separatorIndex = outpointArg.lastIndexOf(":");
+      if (separatorIndex === -1) {
+        console.error(`Invalid format "${outpointArg}". Expected <txhash>:<vout>.`);
+        return;
+      }
+
+      const txHash = outpointArg.substring(0, separatorIndex);
+      const vout = parseInt(outpointArg.substring(separatorIndex + 1), 10);
+      if (!txHash || isNaN(vout)) {
+        console.error(`Invalid format "${outpointArg}". Expected <txhash>:<vout>.`);
+        return;
+      }
+
+      // Look up the UTXO to get its invitation identifier (required by the engine).
+      const allResources = await deps.app.engine.listUnspentOutputsData();
+      const target = allResources.find(
+        (r) => r.outpointTransactionHash === txHash && r.outpointIndex === vout,
+      );
+
+      if (!target) {
+        console.error(`UTXO not found: ${txHash}:${vout}`);
+        return;
+      }
+
+      if (!target.reserved) {
+        console.log(dim("UTXO is not reserved. Nothing to do."));
+        return;
+      }
+
+      await deps.app.engine.unreserveResources(
+        [{ outpointTransactionHash: hexToBin(txHash), outpointIndex: vout }],
+        target.invitationIdentifier,
+      );
+      console.log(`Unreserved ${bold(`${txHash}:${vout}`)} (was reserved for ${target.invitationIdentifier})`);
+      break;
+    }
+
+    case "unreserve-all": {
+      const count = await deps.app.unreserveAllResources();
+      if (count === 0) {
+        console.log(dim("No reserved resources to unreserve."));
+      } else {
+        console.log(`Unreserved ${bold(String(count))} resource(s).`);
+      }
+      break;
+    }
+
+    default: {
+      deps.verboseLogger(`Unknown resource sub-command: ${subCommand}`);
+      printResourceHelp();
+      return;
+    }
+  }
+};

src/cli/commands/template.ts

@@ -0,0 +1,276 @@
+import { existsSync, readFileSync } from "fs";
+import path from "path";
+import { generateTemplateIdentifier } from "@xo-cash/engine";
+import type { XOTemplate } from "@xo-cash/types";
+
+import { bold, dim, formatObject, objectPrint } from "../cli-utils.js";
+import { resolveTemplateReferences } from "../../utils/templates.js";
+import type { CommandDependencies } from "./types.js";
+
+/**
+ * Prints the help message for the template command
+ */
+export const printTemplateHelp = () => {
+  console.log(
+`
+${bold("Usage:")} xo-cli template <sub-command>
+
+${bold("Sub-commands:")}
+    - import <template-file> ${dim("Import a template from a file")}
+    - list ${dim("List all templates")}
+    - list <category> <identifier> ${dim("List all options of the field type in a template")}
+    - inspect <category> <identifier> <field> ${dim("Inspect a field in a template")}
+    - set-default <template-file> <output-identifier> <role-identifier> ${dim("Set the default template")}
+  `);
+};
+
+/**
+ * Handles the template list command.
+ * @param deps - The command dependencies.
+ * @param args - Positional args after the command name, e.g. ["list", "action"] or ["list", "action", "1234567890"].
+ */
+export const handleTemplateListCommand = async (deps: CommandDependencies, args: string[]): Promise<void> => {
+  const templateCategory = args[0];
+  deps.verboseLogger(`Template list category: ${templateCategory}`);
+
+  // If no category was provided to list, we assume its listing out the templates
+  if (!templateCategory) {
+    const templates = await deps.app.engine.listImportedTemplates();
+    const formattedTemplates = templates.map((template: XOTemplate) => `${bold(generateTemplateIdentifier(template))} - ${dim(template.name)} ${dim(template.description)}`);
+    console.log(formattedTemplates.join('\n'));
+    return;
+  }
+
+  // Extract the template identifier from the positional args
+  const templateIdentifier = args[1];
+  deps.verboseLogger(`Template identifier: ${templateIdentifier}`);
+
+  if (!templateIdentifier) {
+    console.error("No template identifier provided");
+    return;
+  }
+
+  // Get the template from the engine
+  const rawTemplate = await deps.app.engine.getTemplate(templateIdentifier);
+  if (!rawTemplate) {
+    console.error(`No template found: ${templateIdentifier}`);
+    return;
+  }
+
+  // Resolve the template references
+  const template = await resolveTemplateReferences(rawTemplate);
+  deps.verboseLogger(`Template: ${formatObject(template)}`);
+
+  // List the templates in the category
+  switch (templateCategory) {
+    case "action": {
+      const actions = template.actions;
+      const formattedActions = Object.entries(actions).map(([actionIdentifier, action]) => `${bold(actionIdentifier)} ${dim(action.name)} ${dim(action.description)}`);
+      console.log(formattedActions.join('\n'));
+      break;
+    }
+    case "transaction": {
+      const transactions = template.transactions;
+      const formattedTransactions = Object.entries(transactions).map(([transactionIdentifier, transaction]) => `${bold(transactionIdentifier)} ${dim(transaction.name)} ${dim(transaction.description)}`);
+      console.log(formattedTransactions.join('\n'));
+      break;
+    }
+    case "output": {
+      const outputs = template.outputs;
+      const formattedOutputs = Object.entries(outputs).map(([outputIdentifier, output]) => `${bold(outputIdentifier)} ${dim(output.name)} ${dim(output.description)}`);
+      console.log(formattedOutputs.join('\n'));
+      break;
+    }
+    case "lockingscript": {
+      const lockingscripts = template.lockingScripts;
+      const formattedLockingscripts = Object.entries(lockingscripts).map(([lockingScriptIdentifier, lockingScript]) => `${bold(lockingScriptIdentifier)} ${dim(lockingScript.name)} ${dim(lockingScript.description)}`);
+      console.log(formattedLockingscripts.join('\n'));
+      break;
+    }
+    case "variable": {
+      const variables = template.variables || {};
+      const formattedVariables = Object.entries(variables).map(([variableIdentifier, variable]) => `${bold(variableIdentifier)} ${dim(variable.name)} ${dim(variable.description)}`);
+      console.log(formattedVariables.join('\n'));
+      break;
+    }
+    default: {
+      deps.verboseLogger(`Unknown template category: ${templateCategory}`);
+      return;
+    }
+  }
+}
+
+/**
+ * Prints the help message for the template inspect command
+ */
+export const printTemplateInspectHelp = () => {
+  console.log(
+`
+${bold("Usage:")} xo-cli template inspect <category> <identifier> <field>
+
+${bold("Arguments:")}
+    <category> ${dim("The category of the template to inspect")}
+    <identifier> ${dim("The identifier of the template to inspect")}
+    <field> ${dim("The field of the template to inspect")}
+
+${bold("Categories:")}
+    - action <action-identifier> ${dim("Inspect an action")}
+    - transaction <transaction-identifier> ${dim("Inspect a transaction")}
+    - output <output-identifier> ${dim("Inspect an output")}
+    - lockingscript <lockingscript-identifier> ${dim("Inspect a lockingscript")}
+    - variable <variable-identifier> ${dim("Inspect a variable")}
+  `);
+};
+
+/**
+ * Handles the template inspect command.
+ * @param deps - The command dependencies.
+ * @param args - Positional args after the command name, e.g. ["inspect", "transaction", "1234567890"].
+ */
+export const handleTemplateInspectCommand = async (deps: CommandDependencies, args: string[]): Promise<void> => {
+  const templateCategory = args[0];
+  const templateIdentifier = args[1];
+  const templateField = args[2];
+
+  deps.verboseLogger(`Template inspect args - category: ${templateCategory}, identifier: ${templateIdentifier}, field: ${templateField}`);
+
+  if (!templateCategory || !templateIdentifier || !templateField) {
+    console.log("No template category, identifier, or field provided");
+    printTemplateInspectHelp();
+    return;
+  }
+
+  // Get the template from the engine
+  const rawTemplate = await deps.app.engine.getTemplate(templateIdentifier);
+  if (!rawTemplate) {
+    console.error(`No template found: ${templateIdentifier}`);
+    return;
+  }
+
+  // Resolve the template references
+  const template = await resolveTemplateReferences(rawTemplate);
+  deps.verboseLogger(`Template: ${formatObject(template)}`);
+
+  // Inspect the template in the category
+  switch (templateCategory) {
+    case "action": {
+      const action = template.actions[templateField];
+      if (!action) {
+        console.error(`No action found: ${templateField}`);
+        return;
+      }
+      objectPrint(action);
+      break;
+    }
+    case "transaction": {
+      const transaction = template.transactions[templateField];
+      if (!transaction) {
+        console.error(`No transaction found: ${templateField}`);
+        return;
+      }
+      objectPrint(transaction);
+      break;
+    }
+    case "output": {
+      const output = template.outputs[templateField];
+      if (!output) {
+        console.error(`No output found: ${templateField}`);
+        return;
+      }
+      objectPrint(output);
+      break;
+    }
+    case "lockingscript": {
+      const lockingscript = template.lockingScripts[templateField];
+      if (!lockingscript) {
+        console.error(`No lockingscript found: ${templateField}`);
+        return;
+      }
+      objectPrint(lockingscript);
+      break;
+    }
+    case "variable": {
+      const variable = template.variables?.[templateField];
+      if (!variable) {
+        console.error(`No variable found: ${templateField}`);
+        return;
+      }
+      objectPrint(variable);
+      break;
+    }
+    default: {
+      deps.verboseLogger(`Unknown template category: ${templateCategory}`);
+      return;
+    }
+  }
+}
+
+/**
+ * Handles the template command.
+ * @param deps - The command dependencies.
+ * @param args - Positional args after the command name, e.g. ["import", "template.json"] or ["set-default", "tpl", "out", "role"].
+ * @param options - Parsed option flags.
+ */
+export const handleTemplateCommand = async (deps: CommandDependencies, args: string[], options: Record<string, string>): Promise<void> => {
+  const subCommand = args[0];
+
+  if (!subCommand) {
+    deps.verboseLogger("No sub-command provided");
+    printTemplateHelp();
+    return;
+  }
+
+  switch (subCommand) {
+    case "import": {
+      const templateFile = args[1];
+      deps.verboseLogger(`Template file: ${templateFile}`);
+
+      if (!templateFile) {
+        deps.verboseLogger("No template file provided");
+        printTemplateHelp();
+        return;
+      }
+
+      const templatePath = path.resolve(`${process.cwd()}/${templateFile}`);
+      deps.verboseLogger(`Template path: ${templatePath}`);
+
+      if (!existsSync(templatePath)) {
+        console.error(`Template file does not exist: ${templatePath}`);
+        printTemplateHelp();
+        return;
+      }
+
+      const template = await readFileSync(templatePath, "utf8");
+
+      deps.verboseLogger(`Importing template: ${templateFile}`);
+      await deps.app.engine.importTemplate(template);
+      deps.verboseLogger(`Template imported: ${templateFile}`);
+      break;
+    }
+    case "list": {
+      await handleTemplateListCommand(deps, args.slice(1));
+      break;
+    }
+    case "inspect": {
+      await handleTemplateInspectCommand(deps, args.slice(1));
+      break;
+    }
+    case "set-default": {
+      const templateFile = args[1];
+      const outputIdentifier = args[2];
+      const roleIdentifier = args[3];
+      if (!templateFile || !outputIdentifier || !roleIdentifier) {
+        deps.verboseLogger("No template file, output identifier, or role identifier provided");
+        printTemplateHelp();
+        return;
+      }
+      deps.verboseLogger(`Template file: ${templateFile}, output identifier: ${outputIdentifier}, role identifier: ${roleIdentifier}`);
+      await deps.app.engine.setDefaultLockingParameters(templateFile, outputIdentifier, roleIdentifier);
+      break;
+    }
+    default:
+      deps.verboseLogger(`Unknown template sub-command: ${subCommand}`);
+      printTemplateHelp();
+      return;
+  }
+};

src/cli/commands/types.ts

@@ -0,0 +1,6 @@
+import type { AppService } from "../../services/app.js";
+
+export type CommandDependencies = {
+  verboseLogger: (message: string) => void;
+  app: AppService;
+};

src/cli/completions.ts

@@ -0,0 +1,204 @@
+/**
+ * Shell completion script generation.
+ * 
+ * Defines the CLI command tree in one place and generates
+ * bash/zsh/fish completion scripts from it. Users source the output
+ * in their shell profile for tab-completion support.
+ * 
+ * Usage:
+ *   eval "$(xo-cli completions bash)"
+ *   eval "$(xo-cli completions zsh)"
+ *   xo-cli completions fish | source
+ */
+
+/**
+ * Single source of truth for the CLI command tree.
+ * Each top-level key is a command, and its value is an array of sub-commands.
+ */
+export const COMMAND_TREE: Record<string, string[]> = {
+  mnemonic:   ["create", "import", "list"],
+  template:   ["import", "list", "set-default"],
+  invitation: ["create", "import", "list"],
+  receive:    [],
+  resource:   ["list"],
+  help:       [],
+  completions: ["bash", "zsh", "fish"],
+};
+
+/** Global option flags available on every command. */
+const GLOBAL_OPTIONS = ["-h", "--help", "-v", "--verbose", "-m", "--mnemonic-file", "-o", "--output"];
+
+/**
+ * Generates a bash completion script.
+ * @param binName - The name of the CLI binary (used in the `complete` registration).
+ */
+export function generateBashCompletions(binName: string): string {
+  const commands = Object.keys(COMMAND_TREE).join(" ");
+  const options = GLOBAL_OPTIONS.join(" ");
+
+  // Build the case arms for each command's sub-commands
+  const caseArms = Object.entries(COMMAND_TREE)
+    .filter(([, subs]) => subs.length > 0)
+    .map(([cmd, subs]) => `      ${cmd})\n        COMPREPLY=($(compgen -W "${subs.join(" ")}" -- "\${cur}"))\n        return 0\n        ;;`)
+    .join("\n");
+
+  return `# bash completion for ${binName}
+# Add to ~/.bashrc:  eval "$(${binName} completions bash)"
+_${binName.replace(/-/g, "_")}_completions() {
+  local cur prev words cword
+  _init_completion || return
+
+  # If the current word starts with "-", offer option flags
+  if [[ "\${cur}" == -* ]]; then
+    COMPREPLY=($(compgen -W "${options}" -- "\${cur}"))
+    return 0
+  fi
+
+  # Find the command (first non-option positional arg after the binary)
+  local cmd=""
+  for ((i=1; i < cword; i++)); do
+    if [[ "\${words[i]}" != -* ]]; then
+      cmd="\${words[i]}"
+      break
+    fi
+  done
+
+  # No command yet — offer the top-level commands
+  if [[ -z "\${cmd}" ]]; then
+    COMPREPLY=($(compgen -W "${commands}" -- "\${cur}"))
+    return 0
+  fi
+
+  # Offer sub-commands for the matched command
+  case "\${cmd}" in
+${caseArms}
+  esac
+}
+
+complete -F _${binName.replace(/-/g, "_")}_completions ${binName}
+`;
+}
+
+/**
+ * Generates a zsh completion script.
+ * @param binName - The name of the CLI binary.
+ */
+export function generateZshCompletions(binName: string): string {
+  const commands = Object.keys(COMMAND_TREE).join(" ");
+  const options = GLOBAL_OPTIONS.join(" ");
+
+  const caseArms = Object.entries(COMMAND_TREE)
+    .filter(([, subs]) => subs.length > 0)
+    .map(([cmd, subs]) => `      ${cmd})\n        compadd -- ${subs.join(" ")}\n        ;;`)
+    .join("\n");
+
+  return `# zsh completion for ${binName}
+# Add to ~/.zshrc:  eval "$(${binName} completions zsh)"
+_${binName.replace(/-/g, "_")}_completions() {
+  local -a commands
+  commands=(${commands})
+
+  # If typing an option flag, complete options
+  if [[ "\${words[\${CURRENT}]}" == -* ]]; then
+    compadd -- ${options}
+    return
+  fi
+
+  # Find the command (first non-option positional arg)
+  local cmd=""
+  for ((i=2; i < CURRENT; i++)); do
+    if [[ "\${words[i]}" != -* ]]; then
+      cmd="\${words[i]}"
+      break
+    fi
+  done
+
+  # No command yet — offer top-level commands
+  if [[ -z "\${cmd}" ]]; then
+    compadd -- \${commands[@]}
+    return
+  fi
+
+  # Offer sub-commands
+  case "\${cmd}" in
+${caseArms}
+  esac
+}
+
+compdef _${binName.replace(/-/g, "_")}_completions ${binName}
+`;
+}
+
+/**
+ * Generates a fish completion script.
+ * @param binName - The name of the CLI binary.
+ */
+export function generateFishCompletions(binName: string): string {
+  const lines: string[] = [
+    `# fish completion for ${binName}`,
+    `# Add to fish config:  ${binName} completions fish | source`,
+    "",
+    `# Disable file completions by default`,
+    `complete -c ${binName} -f`,
+    "",
+  ];
+
+  // Global options
+  for (const opt of GLOBAL_OPTIONS) {
+    const isShort = !opt.startsWith("--");
+    const flag = opt.replace(/^-+/, "");
+    if (isShort) {
+      lines.push(`complete -c ${binName} -s ${flag} -d "Option flag"`);
+    } else {
+      lines.push(`complete -c ${binName} -l ${flag} -d "Option flag"`);
+    }
+  }
+  lines.push("");
+
+  // Top-level commands (only when no sub-command is given yet)
+  const commandNames = Object.keys(COMMAND_TREE);
+  for (const cmd of commandNames) {
+    lines.push(`complete -c ${binName} -n "__fish_use_subcommand" -a "${cmd}" -d "${cmd} command"`);
+  }
+  lines.push("");
+
+  // Sub-commands for each command
+  for (const [cmd, subs] of Object.entries(COMMAND_TREE)) {
+    for (const sub of subs) {
+      lines.push(`complete -c ${binName} -n "__fish_seen_subcommand_from ${cmd}" -a "${sub}" -d "${cmd} ${sub}"`);
+    }
+  }
+
+  return lines.join("\n") + "\n";
+}
+
+type ShellType = "bash" | "zsh" | "fish";
+
+const generators: Record<ShellType, (binName: string) => string> = {
+  bash: generateBashCompletions,
+  zsh: generateZshCompletions,
+  fish: generateFishCompletions,
+};
+
+/**
+ * Handles the `completions` command.
+ * Prints the generated completion script for the given shell to stdout.
+ * @param args - Positional args after "completions", e.g. ["bash"].
+ * @param binName - The CLI binary name to use in the completion script.
+ */
+export function handleCompletionsCommand(args: string[], binName: string = "xo-cli"): void {
+  const shell = args[0] as ShellType | undefined;
+
+  if (!shell || !generators[shell]) {
+    const supported = Object.keys(generators).join(", ");
+    console.error(`Usage: ${binName} completions <${supported}>`);
+    console.error("");
+    console.error("Examples:");
+    console.error(`  eval "$(${binName} completions bash)"   # Add to ~/.bashrc`);
+    console.error(`  eval "$(${binName} completions zsh)"    # Add to ~/.zshrc`);
+    console.error(`  ${binName} completions fish | source    # Add to fish config`);
+    process.exit(1);
+  }
+
+  process.stdout.write(generators[shell](binName));
+}

src/cli/index.ts

@@ -0,0 +1,204 @@
+/**
+ * CLI entry point.
+ * 
+ * TODO: Decide the best way to handle CLI arguments. We have the option of:
+ * - Handling it in the `bin` folder
+ * - Switch / if statements in here
+ * - Dedicated command parser
+ * - Separate files?
+ * 
+ * What kind of commands do we want to support?
+ * Worth noting that we shouldn't need to list invitations? Maybe we will though? If we do, then we will need to reuse the storage + xo-invitations.db file. I think this is fine to do though?
+ * Nah, lets use the storage + xo-invitations.db file. Will allow us to persist invitations.
+ * How do we want to import invitations though? Should we just take in the ID still? Probably makes more sense to allow for reading from a file though...
+ * But thats an entirely different flow to what we have already. And how would we handle writing the invitation? Do we just overwrite the file? Probably... Just take in an -o option; default to overwrite?
+ * 
+ * Commands:
+ * xo-cli mnemonic create [mnemonic seed]
+ * xo-cli mnemonic list
+ * 
+ * xo-cli template import <template-file>
+ * xo-cli template list
+ * xo-cli template set-default <template-file> <output-identifier> <role-identifier>
+ *
+ * xo-cli invitation list
+ * xo-cli invitation create <template-file> <action-id> [-o Output file, var-${action-variable-name}=${value}, role=${value}]
+ * xo-cli invitation import <invitation-file>
+ * xo-cli invitation sign <invitation-file>
+ * xo-cli invitation broadcast <invitation-file>
+ * 
+ * xo-cli resource list
+ * 
+ * universal Args:
+ * -h --help
+ * -m --mnemonic-file <mnemonic-file>
+ */
+
+import { existsSync, readFileSync, writeFileSync } from "fs";
+
+import { AppService } from "../services/app.js";
+import { convertArgsToObject } from "./arguments.js";
+import { bold, dim, formatObject } from "./cli-utils.js";
+import { listMnemonicFiles, loadMnemonic } from "./mnemonic.js";
+
+/** File that remembers the last-used mnemonic so `-m` can be omitted. */
+const WALLET_CONFIG_FILE = ".xo-cli-wallet";
+
+import { 
+  type CommandDependencies,
+  handleMnemonicCommand, 
+  handleTemplateCommand, 
+  handleInvitationCommand,
+  handleReceiveCommand,
+  handleResourceCommand,
+} from "./commands/index.js";
+
+import { handleCompletionsCommand } from "./completions.js";
+
+const createConditionalLogger = (verbose: boolean) => {
+  return (message: string) => {
+    if (verbose) {
+      console.log(message);
+    }
+  };
+};
+
+/**
+ * Main entry point.
+ * We will: 
+ * - Initialize the app service?
+ * - Extract the command being called
+ * - Extract CLI Args (Depends on the command being called. Eww. But we can probably use Zod to validate the args in a decent way?)
+ * - Execute the command
+ * - Export if configured?
+ * - Exit with the appropriate code
+ */
+async function main(): Promise<void> {
+  // Initialize the app service
+  // NOTE: We are going to assume that they are using a mnemonic file for now
+  const { args, options } = convertArgsToObject(process.argv.slice(2));
+
+  // Create a verbose logger if the user set the verbose flag
+  const verboseLogger = createConditionalLogger(options["verbose"] === "true");
+
+  // Log the parsed app args
+  verboseLogger(`Parsed args: ${formatObject(args)}`);
+  verboseLogger(`Parsed options: ${formatObject(options)}`);
+  
+  // Handle the command
+  const command = args[0];
+  verboseLogger(`Command: ${command}`);
+  if (!command) {
+    // TODO: Print help, probably...
+    console.error("No command provided");
+    process.exit(1);
+  }
+
+  // Positional args after the command name (sub-command, files, etc.)
+  const subArgs = args.slice(1);
+
+  // Early handling if we are calling the mnemonic command
+  // TODO: This is ugly. I would like to find a nicer way of doing this.
+  if (command === "completions") {
+    handleCompletionsCommand(subArgs);
+    return;
+  }
+
+  if (command === "mnemonic") {
+    await handleMnemonicCommand({ verboseLogger }, subArgs, options);
+    return;
+  }
+
+  // Resolve mnemonic file: explicit flag > persisted config > error.
+  let mnemonicFile = options["mnemonicFile"];
+  if (!mnemonicFile && existsSync(WALLET_CONFIG_FILE)) {
+    mnemonicFile = readFileSync(WALLET_CONFIG_FILE, "utf8").trim();
+    verboseLogger(`Using persisted wallet: ${mnemonicFile}`);
+  }
+  if (!mnemonicFile) {
+    console.error("No mnemonic file provided");
+    console.log(`You can create a mnemonic file with the following command: xo-cli mnemonic create <mnemonic-seed> or use one of the following files: \n${listMnemonicFiles().join("\n")}`);
+    console.log(`\nTip: pass -m <file> once and it will be remembered in ${WALLET_CONFIG_FILE}`);
+    process.exit(1);
+  }
+
+  // Persist the choice so subsequent commands can omit -m.
+  writeFileSync(WALLET_CONFIG_FILE, mnemonicFile);
+
+  const mnemonic = await loadMnemonic(mnemonicFile);
+  verboseLogger(`Loaded mnemonic from file: ${mnemonicFile} ${mnemonic}`);
+  
+  // Create an App instance
+  verboseLogger("Creating app instance...");
+  const app = await AppService.create(mnemonic, {
+    syncServerUrl: options["syncServerUrl"] ?? "http://localhost:3000",
+    engineConfig: {
+      databasePath: options["databasePath"] ?? "./",
+      databaseFilename: options["databaseFilename"] ?? 'xo-wallet.db',
+    },
+    invitationStoragePath: options["invitationStoragePath"] ?? "./xo-invitations.db",
+  });
+  verboseLogger("App instance created");
+
+  // Start the app
+  verboseLogger("Starting app...");
+  await app.start();
+  verboseLogger("App started");
+
+  const commandDependencies: CommandDependencies = {
+    verboseLogger,
+    app,
+  };
+
+  // Handle the command
+  switch (command) {
+    case "template":
+      await handleTemplateCommand(commandDependencies, subArgs, options);
+      break;
+    case "invitation":
+      await handleInvitationCommand(commandDependencies, subArgs, options);
+      break;
+    case "receive":
+      await handleReceiveCommand(commandDependencies, subArgs, options);
+      break;
+    case "resource":
+      await handleResourceCommand(commandDependencies, subArgs, options);
+      break;
+    case "help":
+      await handleHelpCommand(commandDependencies, subArgs, options);
+      break;
+    default:
+      console.error(`Unknown command: ${command}`);
+      process.exit(1);
+  }
+
+  // Exit the process
+  process.exit(0);
+}
+
+const handleHelpCommand = async (deps: CommandDependencies, args: string[], options: Record<string, string>): Promise<void> => {
+  // Im sorry about the formatting here. I'm not sure how to handle this better.
+  console.log(
+`${bold("XO-CLI Help:")}
+
+${bold("Usage:")} xo-cli <command> [options]
+
+Commands:
+  mnemonic    ${dim("Manage mnemonic files")}
+  template    ${dim("Manage templates")}
+  invitation  ${dim("Manage invitations")}
+  receive     ${dim("Generate a single-use receiving address")}
+  resource    ${dim("Manage resources")}
+  completions ${dim("Generate shell completion scripts (bash, zsh, fish)")}
+
+Options:
+  -h, --help    ${dim("Show this help message")}
+  -m, --mnemonic-file <mnemonic-file>  ${dim("Use a specific mnemonic file")}
+  -v, --verbose   ${dim("Show verbose output")}`
+  );
+};
+
+main().catch((error) => {
+  console.error(error);
+  process.exit(1);
+});

src/cli/mnemonic.ts

@@ -0,0 +1,72 @@
+import { readdirSync, readFileSync, writeFileSync } from "node:fs";
+import { BCHMnemonicURL,  } from "../utils/bch-mnemonic-url.js";
+import { encodeBip39Mnemonic, generateBip39Mnemonic } from "@bitauth/libauth";
+
+/**
+ * Create a new mnemonic seed phrase
+ */
+export const createMnemonicSeed = (): string => {
+  // Generate a new mnemonic seed
+  const mnemonic = generateBip39Mnemonic();
+
+  // Return the mnemonic phrase
+  return mnemonic;
+};
+
+/**
+ * Creates a mnemonic file from a mnemonic seed
+ * @param mnemonic - The mnemonic seed
+ * @param outputFilename - The filename to write the mnemonic to. If not provided, the first word from the mnemonic will be used as the filename
+ * @returns The filename of the created mnemonic file
+ */
+export const createMnemonicFile = (mnemonic: string, outputFilename?: string): string => {
+  // Convert the mnemonic seed to a BCH Mnemonic URL
+  const mnemonicUrl = BCHMnemonicURL.fromSeed(mnemonic);
+
+  // If no output filename is provided, use the first word from the mnemonic as the filename
+  let fileName = outputFilename;
+  if (!fileName) {
+    const firstWord = mnemonic.at(0)?.toLowerCase();
+    if (!firstWord) {
+      throw new Error("Failed to create mnemonic file: Unable to extract first word from the mnemonic");
+    }
+    fileName = `mnemonic-${firstWord}`;
+  }
+
+  // Write the mnemonic URL to a file
+  // TODO: May need PWD or something to ensure we are writing to the correct directory
+  writeFileSync(fileName, mnemonicUrl.toURL());
+
+  return fileName;
+};
+
+/**
+ * Loads a mnemonic from a mnemonic file
+ * @param mnemonicFile - The filename of the mnemonic file
+ * @returns The mnemonic seed
+ */
+export const loadMnemonic = (mnemonicFile: string): string => {
+  const mnemonicUrl = BCHMnemonicURL.fromURL(readFileSync(mnemonicFile, "utf8"));
+  const { entropy } = mnemonicUrl.toObject();
+
+  // Convert the entropy to a mnemonic seed
+  const mnemonic = encodeBip39Mnemonic(entropy);
+
+  // If the conversion failed, throw an error
+  if (typeof mnemonic === "string") {
+    throw new Error(`Failed to convert entropy to mnemonic: ${mnemonic}`);
+  }
+
+  // Return the mnemonic phrase
+  return mnemonic.phrase;
+};
+
+/**
+ * Lists all mnemonic files in the current directory
+ * @returns An array of mnemonic file names
+ */
+export const listMnemonicFiles = (): string[] => {
+  const cwd = process.cwd();
+  const filenames = readdirSync(cwd).filter((f: string) => f.startsWith('mnemonic-'));
+  return filenames;
+};

src/services/app.ts

@@ -22,6 +22,14 @@ import { hexToBin } from "@bitauth/libauth";
 export type AppEventMap = {
   "invitation-added": Invitation;
   "invitation-removed": Invitation;
+  "wallet-state-changed": {
+    reason:
+      | "invitation-added"
+      | "invitation-removed"
+      | "invitation-updated"
+      | "invitation-status-changed";
+    invitationIdentifier: string;
+  };
 };
 
 export interface AppConfig {
@@ -40,6 +48,13 @@ export class AppService extends EventEmitter<AppEventMap> {
   public electrum: ElectrumService;
 
   public invitations: Invitation[] = [];
+  private invitationEventCleanup = new Map<
+    string,
+    {
+      onUpdated: (invitation: XOInvitation) => void;
+      onStatusChanged: (status: string) => void;
+    }
+  >();
 
   static async create(seed: string, config: AppConfig): Promise<AppService> {
     // Because of a bug that lets wallets read the unspents of other wallets, we are going to manually namespace the storage paths for the app.
@@ -57,9 +72,10 @@ export class AppService extends EventEmitter<AppEventMap> {
 
     // TODO: We *technically* dont want this here, but we also need some initial templates for the wallet, so im doing it here
     // Import the default P2PKH template
-    await engine.importTemplate(p2pkhTemplate);
+    const { templateIdentifier } = await engine.importTemplate(p2pkhTemplate);
 
-    // console.log('p2pkhTemplate', JSON.stringify(p2pkhTemplate.transactions, null, 2));
+    engine.subscribeToLockingBytecodesForTemplate(templateIdentifier).catch(err => console.error(`Error subscribing to locking bytecodes for template ${templateIdentifier}: ${err}`));
+    engine.updateUnspentOutputsForTemplate(templateIdentifier).catch(err => console.error(`Error updating unspent outputs for template ${templateIdentifier}: ${err}`));
 
     // Set default locking parameters for P2PKH
     // To my knowledge, this doesnt generate any lockscript, so discovery of funds will not work automatically.
@@ -80,32 +96,6 @@ export class AppService extends EventEmitter<AppEventMap> {
       applicationIdentifier: config.electrumApplicationIdentifier,
     });
 
-    // TEMP because testing is painful
-    // Remove all reserved UTXOs on startup
-    // First, get every unspent output
-    const allUnspentOutputs = await engine.listUnspentOutputsData();
-
-    // Get a set of all the invitation identifiers
-    const allInvitationIdentifiers = new Set(
-      allUnspentOutputs.map((output) => output.invitationIdentifier),
-    );
-
-    // Iterate over the invitation identifiers and unreserve the outputs
-    for (const invitationIdentifier of allInvitationIdentifiers) {
-      // Get the outputs for the invitation
-      const outputs = allUnspentOutputs.filter(
-        (output) => output.invitationIdentifier === invitationIdentifier,
-      );
-      // Unreserve the outputs
-      await engine.unreserveResources(
-        outputs.map((output) => ({
-          outpointTransactionHash: hexToBin(output.outpointTransactionHash),
-          outpointIndex: output.outpointIndex,
-        })),
-        invitationIdentifier,
-      );
-    }
-
     return new AppService(engine, walletStorage, config, electrum);
   }
 
@@ -145,27 +135,116 @@ export class AppService extends EventEmitter<AppEventMap> {
 
     // Create the invitation
     const invitationInstance = await Invitation.create(invitation, deps);
-
+    
     // Add the invitation to the invitations array
     await this.addInvitation(invitationInstance);
-
+    
     return invitationInstance;
   }
 
   async addInvitation(invitation: Invitation): Promise<void> {
+    this.attachInvitationListeners(invitation);
+
     // Add the invitation to the invitations array
     this.invitations.push(invitation);
 
     // Emit the invitation-added event
     this.emit("invitation-added", invitation);
+    this.emit("wallet-state-changed", {
+      reason: "invitation-added",
+      invitationIdentifier: invitation.data.invitationIdentifier,
+    });
   }
 
   async removeInvitation(invitation: Invitation): Promise<void> {
-    // Remove the invitation from the invitations array
+    const invitationIdentifier = invitation.data.invitationIdentifier;
-    this.invitations = this.invitations.filter((i) => i !== invitation);
+    this.detachInvitationListeners(invitationIdentifier);
+
+    // Remove the invitation from the invitations array while preserving the array reference.
+    const invitationIndex = this.invitations.indexOf(invitation);
+    if (invitationIndex >= 0) {
+      this.invitations.splice(invitationIndex, 1);
+    }
 
     // Emit the invitation-removed event
     this.emit("invitation-removed", invitation);
+    this.emit("wallet-state-changed", {
+      reason: "invitation-removed",
+      invitationIdentifier,
+    });
+  }
+
+  private attachInvitationListeners(invitation: Invitation): void {
+    const invitationIdentifier = invitation.data.invitationIdentifier;
+    if (this.invitationEventCleanup.has(invitationIdentifier)) return;
+
+    const onUpdated = () => {
+      this.emit("wallet-state-changed", {
+        reason: "invitation-updated",
+        invitationIdentifier,
+      });
+    };
+    const onStatusChanged = () => {
+      this.emit("wallet-state-changed", {
+        reason: "invitation-status-changed",
+        invitationIdentifier,
+      });
+    };
+
+    invitation.on("invitation-updated", onUpdated);
+    invitation.on("invitation-status-changed", onStatusChanged);
+
+    this.invitationEventCleanup.set(invitationIdentifier, {
+      onUpdated,
+      onStatusChanged,
+    });
+  }
+
+  private detachInvitationListeners(invitationIdentifier: string): void {
+    const trackedInvitation = this.invitations.find(
+      (candidate) =>
+        candidate.data.invitationIdentifier === invitationIdentifier,
+    );
+    const cleanup = this.invitationEventCleanup.get(invitationIdentifier);
+    if (!trackedInvitation || !cleanup) return;
+
+    trackedInvitation.off("invitation-updated", cleanup.onUpdated);
+    trackedInvitation.off(
+      "invitation-status-changed",
+      cleanup.onStatusChanged,
+    );
+    this.invitationEventCleanup.delete(invitationIdentifier);
+  }
+
+  /**
+   * Unreserves all reserved UTXOs across every invitation.
+   * Useful when stale reservations from previous sessions block spending.
+   *
+   * @returns The number of UTXOs that were unreserved.
+   */
+  async unreserveAllResources(): Promise<number> {
+    const allUnspentOutputs = await this.engine.listUnspentOutputsData();
+    const reserved = allUnspentOutputs.filter((o) => o.reserved);
+
+    // Group by invitation identifier so the engine can clear them properly.
+    const byInvitation = new Map<string, typeof reserved>();
+    for (const output of reserved) {
+      const existing = byInvitation.get(output.invitationIdentifier) ?? [];
+      existing.push(output);
+      byInvitation.set(output.invitationIdentifier, existing);
+    }
+
+    for (const [invitationIdentifier, outputs] of byInvitation) {
+      await this.engine.unreserveResources(
+        outputs.map((o) => ({
+          outpointTransactionHash: hexToBin(o.outpointTransactionHash),
+          outpointIndex: o.outpointIndex,
+        })),
+        invitationIdentifier,
+      );
+    }
+
+    return reserved.length;
   }
 
   async start(): Promise<void> {
@@ -180,7 +259,7 @@ export class AppService extends EventEmitter<AppEventMap> {
 
     await Promise.all(
       invitations.map(async ({ key }) => {
-        await this.createInvitation(key);
+        await this.createInvitation(key).catch(err => console.error(`Error creating invitation ${key}: ${err}`));
       }),
     );
   }

src/services/invitation.ts

@@ -34,6 +34,7 @@ import { compileCashAssemblyString } from "@xo-cash/engine";
 export type InvitationEventMap = {
   "invitation-updated": XOInvitation;
   "invitation-status-changed": string;
+  "error": Error;
 };
 
 export type InvitationDependencies = {
@@ -146,32 +147,38 @@ export class Invitation extends EventEmitter<InvitationEventMap> {
    * Start the invitation - Connect sync server and download latest invitation data.
    */
   async start(): Promise<void> {
-    // Connect to the sync server and get the invitation (in parallel)
+    try {
-    const [_, invitation] = await Promise.all([
+      // Connect to the sync server and get the invitation (in parallel)
-      this.syncServer.connect(),
+      const [_, invitation] = await Promise.all([
-      this.syncServer.getInvitation(this.data.invitationIdentifier),
+        this.syncServer.connect(),
-    ]);
+        this.syncServer.getInvitation(this.data.invitationIdentifier),
-
+      ]);
-    // There is a chance we get SSE messages before the invitation is returned, so we want to combine any commits
+  
-    const sseCommits = this.data.commits;
+      // There is a chance we get SSE messages before the invitation is returned, so we want to combine any commits
-
+      const sseCommits = this.data.commits;
-    // Merge the commits
+  
-    const combinedCommits = this.mergeCommits(
+      // Merge the commits
-      sseCommits,
+      const combinedCommits = this.mergeCommits(
-      invitation?.commits ?? [],
+        sseCommits,
-    );
+        invitation?.commits ?? [],
-
+      );
-    // Set the invitation data with the combined commits
+  
-    this.data = { ...this.data, ...invitation, commits: combinedCommits };
+      // Set the invitation data with the combined commits
-
+      this.data = { ...this.data, ...invitation, commits: combinedCommits };
-    // Store the invitation in the storage
+  
-    await this.storage.set(this.data.invitationIdentifier, this.data);
+      // Store the invitation in the storage
-
+      await this.storage.set(this.data.invitationIdentifier, this.data);
-    // Publish the invitation to the sync server
+  
-    this.syncServer.publishInvitation(this.data);
+      // Publish the invitation to the sync server
-
+      this.publishInvitation(this.data);
-    // Compute and emit initial status
+  
-    await this.updateStatus();
+      // Compute and emit initial status
+      await this.updateStatus();
+    } catch (err) {
+      // console.error(`Error starting invitation, could not connect to sync server or get invitation`, err);
+      // Emit the error event. We might want to throw? but we need a better way of handling errors in the invitation system because we need the invitation to successfully initialize.
+      this.emit("error", err instanceof Error ? err : new Error(String(err)));
+    }
   }
 
   /**
@@ -205,6 +212,18 @@ export class Invitation extends EventEmitter<InvitationEventMap> {
     }
   }
 
+  /**
+   * Publish the invitation to the sync server
+   */
+  private async publishInvitation(invitation: XOInvitation = this.data): Promise<void> {
+    try {
+      await this.syncServer.publishInvitation(invitation);
+    } catch (err) {
+      // Emit the error event. We might want to throw? but we need a better way of handling errors in the invitation system because we need the invitation to successfully initialize.
+      this.emit("error", err instanceof Error ? err : new Error(String(err)));
+    }
+  }
+
   /**
    * Merge the commits
    * @param initial - The initial commits
@@ -359,7 +378,7 @@ export class Invitation extends EventEmitter<InvitationEventMap> {
     this.data = await this.engine.acceptInvitation(this.data, acceptParams);
 
     // Sync the invitation to the sync server
-    this.syncServer.publishInvitation(this.data);
+    this.publishInvitation(this.data);
 
     // Update the status of the invitation
     await this.updateStatus();
@@ -373,7 +392,7 @@ export class Invitation extends EventEmitter<InvitationEventMap> {
     const signedInvitation = await this.engine.signInvitation(this.data);
 
     // Publish the signed invitation to the sync server
-    this.syncServer.publishInvitation(signedInvitation);
+    this.publishInvitation(signedInvitation);
 
     // Store the signed invitation in the storage
     await this.storage.set(this.data.invitationIdentifier, signedInvitation);
@@ -385,16 +404,17 @@ export class Invitation extends EventEmitter<InvitationEventMap> {
   }
 
   /**
-   * Broadcast the invitation
+   * Broadcast the invitation.
+   * @returns The transaction hash returned by the network after broadcast.
    */
-  async broadcast(): Promise<void> {
+  async broadcast(): Promise<string> {
-    // Broadcast the transaction (executeAction returns transaction hash when broadcastTransaction: true)
+    const txHash = await this.engine.executeAction(this.data, {
-    await this.engine.executeAction(this.data, {
       broadcastTransaction: true,
     });
 
-    // Update the status of the invitation
     await this.updateStatus();
+
+    return String(txHash);
   }
 
   // ============================================================================
@@ -409,7 +429,7 @@ export class Invitation extends EventEmitter<InvitationEventMap> {
     this.data = await this.engine.appendInvitation(this.data, data);
 
     // Sync the invitation to the sync server
-    await this.syncServer.publishInvitation(this.data);
+    await this.publishInvitation(this.data);
 
     // Store the invitation in the storage
     await this.storage.set(this.data.invitationIdentifier, this.data);
@@ -426,7 +446,7 @@ export class Invitation extends EventEmitter<InvitationEventMap> {
     await this.append({ inputs });
 
     // Sync the invitation to the sync server
-    await this.syncServer.publishInvitation(this.data);
+    await this.publishInvitation(this.data);
   }
 
   /**
@@ -449,7 +469,7 @@ export class Invitation extends EventEmitter<InvitationEventMap> {
     await this.append({ outputs });
 
     // Sync the invitation to the sync server
-    await this.syncServer.publishInvitation(this.data);
+    await this.publishInvitation(this.data);
   }
 
   async addVariables(variables: XOInvitationVariable[]): Promise<void> {
@@ -457,7 +477,7 @@ export class Invitation extends EventEmitter<InvitationEventMap> {
     await this.append({ variables });
 
     // Sync the invitation to the sync server
-    await this.syncServer.publishInvitation(this.data);
+    await this.publishInvitation(this.data);
   }
 
   async findSuitableResources(

src/tui/screens/Transaction.tsx

@@ -17,7 +17,6 @@ import { useBlockableInput } from '../hooks/useInputLayer.js';
 import { useInvitation } from '../hooks/useInvitations.js';
 import { colors, logoSmall, formatSatoshis, formatHex } from '../theme.js';
 import { copyToClipboard } from '../utils/clipboard.js';
-import type { XOInvitation } from '@xo-cash/types';
 
 /**
  * Action menu items.

src/tui/screens/WalletState.tsx

@@ -58,6 +58,7 @@ const menuItems: ListItemData<string>[] = [
   { key: 'import', label: 'Import Invitation', value: 'import' },
   { key: 'invitations', label: 'View Invitations', value: 'invitations' },
   { key: 'new-address', label: 'Generate New Address', value: 'new-address' },
+  { key: 'unreserve-all', label: 'Unreserve All Resources', value: 'unreserve-all' },
   { key: 'refresh', label: 'Refresh', value: 'refresh' },
 ];
 
@@ -160,6 +161,21 @@ export function WalletStateScreen(): React.ReactElement {
     refresh();
   }, [refresh]);
 
+  // Keep wallet state in sync with invitation lifecycle and updates.
+  useEffect(() => {
+    if (!appService) return;
+
+    const onWalletStateChanged = () => {
+      void refresh();
+    };
+
+    appService.on('wallet-state-changed', onWalletStateChanged);
+
+    return () => {
+      appService.off('wallet-state-changed', onWalletStateChanged);
+    };
+  }, [appService, refresh]);
+
   /**
    * Generates a new receiving address and displays it as a QR code.
    */
@@ -211,6 +227,25 @@ export function WalletStateScreen(): React.ReactElement {
     }
   }, [appService, setStatus, showError, refresh]);
 
+  /**
+   * Unreserves all reserved UTXOs and refreshes the wallet state.
+   */
+  const unreserveAll = useCallback(async () => {
+    if (!appService) {
+      showError('AppService not initialized');
+      return;
+    }
+
+    try {
+      setStatus('Unreserving all resources...');
+      const count = await appService.unreserveAllResources();
+      showInfo(`Unreserved ${count} resource(s)`);
+      await refresh();
+    } catch (error) {
+      showError(`Failed to unreserve resources: ${error instanceof Error ? error.message : String(error)}`);
+    }
+  }, [appService, setStatus, showError, showInfo, refresh]);
+
   /**
    * Handles menu action.
    */
@@ -228,11 +263,14 @@ export function WalletStateScreen(): React.ReactElement {
       case 'new-address':
         generateNewAddress();
         break;
+      case 'unreserve-all':
+        unreserveAll();
+        break;
       case 'refresh':
         refresh();
         break;
     }
-  }, [navigate, generateNewAddress, refresh]);
+  }, [navigate, generateNewAddress, unreserveAll, refresh]);
 
   /**
    * Handle menu item activation.

src/tui/screens/invitations/invitation-import/steps/InputsSelectStep.tsx

@@ -142,7 +142,7 @@ export function InputsSelectStep({
       setFocusedIndex(prev => Math.max(0, prev - 1));
     } else if (key.downArrow || input === 'j') {
       setFocusedIndex(prev => Math.min(utxos.length - 1, prev + 1));
-    } else if (input === ' ' || (key.return && utxos.length > 0)) {
+    } else if (input === ' ') {
       if (utxos.length > 0) toggleSelection(focusedIndex);
     } else if (input === 'a') {
       setUtxos(prev => prev.map(u => ({ ...u, selected: true })));

src/utils/bch-mnemonic-url.ts

@@ -3,6 +3,7 @@
  * Pulled directly from the old stack package.
  */
 import { z } from "zod";
+import { decodeBip39Mnemonic } from "@bitauth/libauth";
 
 export type BCHMnemonicURLRaw = {
   entropy: Uint8Array;
@@ -86,6 +87,18 @@ export class BCHMnemonicURL {
     return new BCHMnemonicURL(raw);
   }
 
+  static fromSeed(seed: string): BCHMnemonicURL {
+    // Encode the seed to a Uint8Array
+    const entropy = decodeBip39Mnemonic(seed);
+ 
+    // If the decode failed, throw an error
+    if (typeof entropy === "string") {
+      throw new Error(`Invalid seed: ${entropy}`);
+    }
+
+    return BCHMnemonicURL.fromRaw({ entropy });
+  }
+
   constructor(protected raw: BCHMnemonicURLRaw) {}
 
   toObject() {

src/utils/invitation-flow.ts

@@ -1,5 +1,6 @@
 import type { XOTemplate, XOTemplateTransactionOutput } from "@xo-cash/types";
 import type { Invitation } from "../services/invitation.js";
+import { cashAddressToLockingBytecode, binToHex } from "@bitauth/libauth";
 
 export interface SelectableUtxoLike {
   outpointTransactionHash: string;
@@ -97,6 +98,34 @@ export const getTransactionOutputIdentifier = (
 export const normalizeLockingBytecodeHex = (value: string): string =>
   value.trim().replace(/^0x/i, "");
 
+/**
+ * Checks whether a string looks like a CashAddress and, if so, converts it
+ * to locking bytecode hex. Returns undefined when the value is not a
+ * recognizable CashAddress (callers should fall through to treat it as raw hex).
+ */
+export const tryCashAddressToLockingBytecodeHex = (
+  value: string,
+): string | undefined => {
+  const trimmed = value.trim();
+
+  // Quick prefix check so we don't run the decoder on obvious hex strings.
+  const looksLikeCashAddress =
+    trimmed.startsWith("bitcoincash:") ||
+    trimmed.startsWith("bchtest:") ||
+    trimmed.startsWith("bchreg:") ||
+    // Handle prefix-less addresses (e.g. "qp..." or "pp...")
+    /^[qpQP][a-zA-Z0-9]{41,}$/.test(trimmed);
+
+  if (!looksLikeCashAddress) return undefined;
+
+  const result = cashAddressToLockingBytecode(trimmed);
+
+  // cashAddressToLockingBytecode returns a string on failure.
+  if (typeof result === "string") return undefined;
+
+  return binToHex(result.bytecode);
+};
+
 export const resolveProvidedLockingBytecodeHex = (
   template: XOTemplate,
   outputIdentifier: string,
@@ -128,6 +157,10 @@ export const resolveProvidedLockingBytecodeHex = (
   const providedValue = variableValues[variableIdentifier];
   if (!providedValue) return undefined;
 
+  // If the user pasted a CashAddress, convert it to locking bytecode hex.
+  const fromAddress = tryCashAddressToLockingBytecodeHex(providedValue);
+  if (fromAddress) return fromAddress;
+
   return normalizeLockingBytecodeHex(providedValue);
 };
 

tests/cli/arguments.test.ts

@@ -0,0 +1,55 @@
+import { describe, it, expect } from "vitest"
+
+import { convertArgsToObject } from "../../src/cli/arguments";
+
+const testCases = [
+  {
+    input: ["-h", "--help", "-m", "--mnemonic-file", "mnemonic.txt"],
+    expected: {
+      args: [],
+      options: { help: "true", mnemonicFile: "mnemonic.txt" },
+    },
+  },
+  {
+    input: ['-var-requested-satohis', '1000', '-role', 'receiver'],
+    expected: {
+      args: [],
+      options: { "varRequestedSatohis": "1000", role: "receiver" },
+    },
+  },
+  {
+    input: ['-o', 'output.json', '-var-requested-satohis', '1000', '-role', 'receiver'],
+    expected: {
+      args: [],
+      options: { output: "output.json", "varRequestedSatohis": "1000", role: "receiver" },
+    },
+  },
+  {
+    input: ['mnemonic', 'create', 'page', 'pencil', '-v', '-o', 'mnemonic.txt'],
+    expected: {
+      args: ['mnemonic', 'create', 'page', 'pencil'],
+      options: { verbose: "true", output: "mnemonic.txt" },
+    },
+  },
+  {
+    input: ['-v', 'invitation', 'list', '-m', 'mnemonicFile'],
+    expected: {
+      args: ['invitation', 'list'],
+      options: { verbose: "true", mnemonicFile: "mnemonicFile" },
+    },
+  },
+  {
+    input: ['--help', 'template', 'import', 'template.json'],
+    expected: {
+      args: ['template', 'import', 'template.json'],
+      options: { help: "true" },
+    },
+  },
+];
+
+describe("convertArgsToObject", () => {
+  it.each(testCases)("should split positional args from options", ({ input, expected }) => {
+    const result = convertArgsToObject(input);
+    expect(result).toEqual(expected);
+  });
+});