lunchmoney-mcp-v2

MCP server for the Lunch Money API v2. First MCP server built on the v2 API.

Features

- 14 tools covering read, CRUD, and advanced operations
- Hydrated responses: category, tag, and account names instead of raw IDs
- Smart caching: categories, tags, and accounts cached at startup, auto-refreshed after mutations
- Type-safe: generated from the official OpenAPI spec via openapi-typescript

Setup

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "lunchmoney": {
      "command": "npx",
      "args": ["lunchmoney-mcp-v2"],
      "env": {
        "LUNCHMONEY_TOKEN": "your-api-token-here"
      }
    }
  }
}

Claude Code

Add to .mcp.json in your project or ~/.claude/mcp.json globally:

{
  "mcpServers": {
    "lunchmoney": {
      "command": "npx",
      "args": ["lunchmoney-mcp-v2"],
      "env": {
        "LUNCHMONEY_TOKEN": "your-api-token-here"
      }
    }
  }
}

Get your API token from Lunch Money Developer settings.

Tools

Read

| Tool | Description |
|---|---|
| get_user | Account info (name, email, currency) |
| list_transactions | List/search transactions with filters, or look up by ID |
| list_categories | All categories (nested or flat view) |
| list_tags | All tags |
| get_accounts | Manual + synced accounts with balances |
| get_summary | Budget summary with income/spending/per-category breakdown |
| get_recurring | Recurring items (subscriptions, bills, income) |

CRUD

| Tool | Actions | Description |
|---|---|---|
| manage_transaction | create, update, delete | Single transaction operations |
| manage_category | create, update, delete | Category management (force delete with dependency info) |
| manage_tag | create, update, delete | Tag management (force delete with dependency info) |
| manage_account | create, update, delete | Manual account management (Plaid accounts are read-only) |

Advanced

| Tool | Actions | Description |
|---|---|---|
| bulk_update_transactions | — | Batch update up to 500 transactions at once |
| split_transaction | split, unsplit | Split a transaction into parts or restore the original |
| group_transactions | group, ungroup | Combine transactions into a group or restore originals |

Example prompts

Once connected, just ask your LLM naturally:

Reviewing & organizing
- "Show me all unreviewed transactions from this month"
- "Categorize all my Amazon transactions as Shopping"
- "What did I spend on groceries last week?"
- "Mark these 5 transactions as reviewed"

Budget overview
- "Give me a spending summary for January"
- "What are my recurring expenses?"
- "How much do I have in each account?"

Managing transactions
- "Add a $45 transaction for dinner at Nobu yesterday"
- "Split that $120 Costco transaction into $80 groceries and $40 household"
- "Group these three Uber transactions into one"
- "Delete the duplicate transaction I just created"

Organizing
- "Create a new category called Side Projects"
- "Tag these transactions with travel"
- "Show me all my categories with their IDs"
- "Rename the Dining Out category to Restaurants"

Development

npm install
npm run build
npm start

Regenerate types from the OpenAPI spec:

npm run generate:types

Architecture

src/
  index.ts          Entry point — registers tools, initializes cache
  client.ts         openapi-fetch client + error handling
  cache.ts          In-memory cache for categories, tags, accounts
  format.ts         Text formatters for all response types
  types.ts          Generated from @lunch-money/v2-api-spec
  tools/
    user.ts         get_user
    transactions.ts list_transactions, manage_transaction, bulk_update, split, group
    categories.ts   list_categories, manage_category
    tags.ts         list_tags, manage_tag
    accounts.ts     get_accounts, manage_account
    summary.ts      get_summary
    recurring.ts    get_recurring

License

MIT