Connect Le Chat

Mistral's chat product — launched as Le Chat, and documented as Vibe (with the workspace side called Vibe Work) since Mistral's 2026 renaming — connects to the gateway as a Custom MCP Connector. Mistral doesn't run a submission process for third-party servers to join its built-in connector directory, so configuring a custom connector in your own workspace — a two-minute form, no code — is the way in today. The steps below use the current Vibe UI names.

Step 1 — add a custom MCP connector

Open the Connectors page, click + Add Connector, and switch to the Custom MCP Connector tab. Fill in:

Connector name:  Ansvar
Server URL:      https://gateway.ansvar.eu/mcp
Description:     EU law, regulation, and standards — cited answers

Description is optional; the name and server URL are what Le Chat needs. Click Connect.

Step 2 — authenticate

Le Chat auto-detects a connector's authentication method — no auth, an HTTP bearer token or basic auth, or OAuth 2.1 with Dynamic Client Registration. The gateway advertises OAuth 2.1 with DCR, so clicking Connect should open a browser consent screen at auth.ansvar.eu on its own — approve it, and there's no client ID or secret to obtain by hand.

Step 3 — use it in a conversation

In a chat, click the + icon or type / in the input, select Tools, and enable the Ansvar connector — Mistral's current docs give exactly that flow. After that the gateway's tools are called when your question needs them — you don't select a tool by name, just describe what you need.

Try a question

Ask something with a citable answer, for example: "Using the Ansvar connector, what does NIS2 require of an essential entity's incident-reporting timeline?" A grounded answer names the article and cites the fetched text, not Le Chat's own model memory.

Which plans can add a custom connector

Mistral's launch announcement for connectors describes them as "everything available on the Free plan" — no MCP-specific paywall is stated there or in Mistral's technical documentation. Mistral's docs do describe custom connectors as an administrator-only feature: on solo Free, Pro, and Student accounts the account owner is the administrator by default, so there's nothing extra to unlock; Team and Enterprise workspaces need an admin to add or approve one.

If something breaks

The tool catalogue looks incomplete, or doesn't reflect a tier change. Mistral's docs note that Custom MCP Connectors don't yet support dynamic tool discovery — remove and re-add the connector to pick up a changed tool list.
No Custom MCP Connector tab. This is an administrator-managed feature in Team and Enterprise workspaces — ask your workspace admin to add it or grant you access.
Tools are missing. Tools outside your Ansvar tier are absent by design — see the tool reference.
Everything else — the general troubleshooting page covers OAuth popups, quota errors, and empty results.