mcp-leclerc-drive

The first open-source MCP server for E.Leclerc Drive — let Claude search products, manage a cart, and prepare grocery orders natively, instead of clicking through the website.

🟢 v0.1 — working. All five tools are implemented and validated end-to-end against the live site (store 053701): search, add, read, update, remove. Auth reads your existing Chrome session automatically (no copy-paste). See docs/api-capture.md for the reverse-engineered API.

Why

E.Leclerc Drive has no public API. Today the only way to automate it is browser automation — slow (~3–5 s per item) and fragile (blind clicks). This project exposes the underlying operations as proper MCP tools so any MCP client (Claude Desktop, Claude Code) can drive it directly.

Related MCP server: Discovery Engine MCP Server

Tools

Status

• MCP server scaffold (stdio, @modelcontextprotocol/sdk)

• Tool contracts (search_product, add_to_cart, remove_from_cart, update_quantity, get_cart)

• Cookie-based auth model

• Reverse-engineer Leclerc Drive endpoints (validated live — see docs/api-capture.md)

• Wire endpoints into src/leclerc/client.ts

• Auto-read auth cookie from the local Chrome session (src/auth/cookies.ts)

• End-to-end validation of all five tools against the live store ✅

• Test under Claude Desktop / Claude Code (MCP client integration)

• Handle DataDome cookie refresh / session expiry gracefully

• Publish to npm + submit to MCP registry

Install (development)

git clone https://github.com/skunkobi/mcp-leclerc-drive.git
cd mcp-leclerc-drive
npm install
npm run build

Configuration & auth

Default (recommended): borrow your Chrome session. Log into Leclerc Drive in Chrome once. The server reads the session cookie (incl. the datadome cookie) directly from your local Chrome profile — no copy-paste, and it refreshes itself as your browser session does. On macOS the first read triggers a one-time Keychain prompt ("Chrome Safe Storage"); approve it. The server must run on the same machine as Chrome.

Headless deploys (VPS / CI): set LECLERC_COOKIE to a captured Cookie header and it takes precedence over Chrome (note: a captured DataDome cookie expires, so this needs periodic refreshing).

Finding your store id and host: open your Drive in a browser — the URL looks like https://fd9-courses.leclercdrive.fr/magasin-053701-053701-Your-Town/. The 6-digit number is your LECLERC_STORE_ID; the fdN-courses.leclercdrive.fr part is your LECLERC_HOST (the fdN prefix varies by region). The defaults point to store 053701 (La Ville-aux-Dames).

Claude Desktop / Claude Code (mcp config)

{
  "mcpServers": {
    "leclerc-drive": {
      "command": "node",
      "args": ["/absolute/path/to/mcp-leclerc-drive/dist/index.js"],
      "env": {
        "LECLERC_STORE_ID": "053701"
      }
    }
  }
}

(No cookie needed in the config — it comes from your Chrome session. Just be logged into Leclerc Drive in Chrome.)

Development

npm run dev        # tsc --watch
npm run typecheck  # type-check without emitting
npm run inspect    # run under the MCP Inspector

Architecture

src/
  index.ts          # MCP server: registers the 5 tools over stdio
  config.ts         # env-based config (store, host, cookie source)
  types.ts          # Product / CartItem / Cart
  auth/
    cookies.ts      # cookie provider: auto-read from Chrome, env override
  leclerc/
    client.ts       # Leclerc Drive backend client (search + cart, validated)
docs/
  api-capture.md    # the reverse-engineered Leclerc Drive API

Contributing

This is a community tool — contributions are very welcome, whether it's a bug fix, support for your store, or a whole new capability (checkout, delivery slots, saved lists…).

See CONTRIBUTING.md for dev setup, how to smoke-test against your own account (npm run smoke), and — most useful for this project — a short guide on how to reverse-engineer a new Leclerc Drive endpoint and wire it in. Good first issues are listed in the status checklist above.

Feedback & contact

Feedback, bug reports, and ideas are very welcome — this is an early v0.1.

• Issues / PRs: open an issue on the repo.

• Email: alexandreyagoubi@gmail.com

Disclaimer

Unofficial. Not affiliated with or endorsed by E.Leclerc. Use with your own account, at your own risk, in line with the site's terms of service. Intended for personal automation of your own grocery shopping.

License

MIT