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

Related MCP server: YNAB MCP Server

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

CRUD

Advanced

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