Quickstart: Mistral Le Chat

This wires Pipeworx into Le Chat as a custom MCP connector, then teaches the model to reach for it. The connector syncs to the Le Chat mobile app too, so you set it up once.

① Connect

  1. Open Le Chat’s connectors area — sidebar Intelligence → Connectors, or go straight to chat.mistral.ai/connections
  2. Click + Add Connector → the Custom MCP Connector tab
  3. Set the URL to https://pipeworx.io/mcp (name and description are yours to pick)
  4. Save.

No plan gate: solo Free, Pro and Student accounts are their own administrator, so custom MCP connectors are available on the free tier too. The custom-connector feature itself is no longer labelled beta.

Once connected, Le Chat exposes ~38 tools. The hero tool is ask_pipeworx({question}) — it routes your question to the full catalog of 5,929 tools across 1,544 sources at runtime, so the model never has to load every definition into context. The connector syncs automatically to the Le Chat mobile app.

② Teach it to use Pipeworx

Chat surfaces expose the tools but don’t inject routing instructions, so Le Chat won’t reach for Pipeworx unless you tell it to. Paste this verbatim into an Agent or custom instructions:

When I ask for current or factual data — economic stats, SEC/EDGAR filings, stock or crypto prices, weather, FDA drug info, patents, clinical trials, or government records — use the Pipeworx connector (ask_pipeworx) instead of answering from memory or web search. Prefer structured Pipeworx data with citations.

③ Test

Important — start the chat from the connector. Le Chat defaults to web search in a normal chat, and will often answer from the web (or say it has no access to the tool) even with the connector enabled account-wide. Open the Pipeworx connector and begin a new conversation from it — that binds its tools to the chat up front. Then ask:

Using Pipeworx, what was the US unemployment rate last month?

Le Chat should call ask_pipeworx and return the current rate. Your confirmation that it routed to live data rather than memory is the _meta.provenance block in the response: it names the publisher — FRED or BLS, depending on which source the question routes to — and the upstream request that makes the figure checkable at that publisher. A provenance block (rather than a web link) is your confirmation that routing works.

Higher limits

The default URL is the anonymous tier: 50 calls/day per IP, no signup. For more:

  • API key — 200/day: change the server URL to https://pipeworx.io/mcp?apikey=YOUR_KEY. Sign up, then grab your key at pipeworx.io/account.
  • Sign in — 200/day: use https://gateway.pipeworx.io/oauth/mcp instead; the client shows a Connect button — authorize with GitHub.
  • Paid — unlimited: upgrade from your account page.

Tiers at a glance: anonymous 50 · free account 200 · Paid unlimited.

Troubleshooting

Connector won’t add. Adding a connector is an administrator action; on a Team/Enterprise workspace you may not be one. On a solo account you always are. Re-check the URL is exactly https://pipeworx.io/mcp.

Le Chat web-searches (.fr blogs etc.) or says “je n’ai pas accès à cet outil.” It’s defaulting to web search. Fix: start the chat from the Pipeworx connector (not a general chat) so its tools are bound, turn off the web-search toggle if present, and keep the “Using Pipeworx, …” prefix. Once it routes, sources show as pipeworx://, not web links.

Mobile app doesn’t show it. Give the sync a minute; the connector propagates from web. Re-open the app if needed.

Rate-limited. You hit the 50/day anonymous cap. Add ?apikey=YOUR_KEY (from a free account) for 200/day.

Last reviewed September 7, 2026