Adding DataGalaxy MCP Server to Mistral Le Chat

Modified on: Tue, 7 Jul, 2026 at 7:51 AM

This guide walks you through connecting the DataGalaxy Model Context Protocol (MCP) server to Mistral’s Le Chat so the assistant can search your data catalog, fetch metadata, and use DataGalaxy tools directly in your conversations.

DataGalaxy MCP exposes read-only access to your DataGalaxy platform: semantic and natural-language search, plus object details, links, users, tags, and more. Le Chat acts as an MCP client — it discovers the tools your server provides and calls them (with your approval) inside a chat.

Which Mistral plan do you need?

Adding a custom MCP connector in Le Chat is an administrator feature, not a paid-only one. On the Free, Pro, and Student plans the account owner is the administrator by default, so any of these plans lets you add the DataGalaxy connector. On Team and Enterprise plans, a workspace administrator enables the connector on behalf of users, which is the recommended setup for organisations that want centralised control. Plan availability can change by region — confirm on Mistral’s pricing page before rolling this out.

Prerequisites

A Mistral Le Chat account with administrator rights (account owner on Free/Pro/Student, or a workspace admin on Team/Enterprise).
A DataGalaxy instance with the MCP Server enabled for your organisation.
Your DataGalaxy Personal Access Token (PAT).
Your DataGalaxy MCP Server URL.

Step 1: Enable the DataGalaxy MCP Server

If the MCP Server is not yet active for your company, contact your DataGalaxy account manager to have it enabled. You can confirm it is active from the DataGalaxy MCP Server tab in the platform.

Step 2: Copy your DataGalaxy MCP Server URL

Your server URL follows this format:

https://<instance name>.api.datagalaxy.com/mcp/

Open the DataGalaxy MCP Server tab, then copy the exact URL shown there. Keep the trailing /mcp/ path — the connector will not initialise without the correct path.

Step 3: Get your Personal Access Token (PAT)

Le Chat authenticates to DataGalaxy with a bearer token, which is your PAT.

In DataGalaxy, go to Profile → Security.
Copy your Personal Access Token (or revoke and regenerate it if needed).
Store it somewhere safe for the next steps — treat it like a password.

Step 4: Open Connectors in Le Chat

In Le Chat, connectors live in Work mode — the bridge between Work and your external tools and data.

Go to chat.mistral.ai and sign in with your administrator account.
Switch to the Work tab (the Chat / Work / Code switcher at the top of the sidebar).
Open the Connectors page. Depending on your version, reach it from the sidebar, or from the Connect button in the “Work mode is better with your apps connected” banner, or from Connect your apps for better answers under Suggested for you.
Click + Add Connector.

Step 5: Add a Custom MCP Connector

In the Add Connector dialog, switch to the Custom MCP Connector tab.
Fill in the required fields:
- Connector name — a unique identifier with no spaces or special characters, for example datagalaxy.
- Server URL — paste the DataGalaxy MCP URL you copied in Step 2, including the trailing /mcp/.
- Description (optional) — e.g. “DataGalaxy data catalog: search assets, metadata, lineage and glossary.”
Click Connect. Le Chat automatically detects the server’s authentication method.

Step 6: Authenticate with your PAT

DataGalaxy uses HTTP Bearer Token authentication. When Le Chat prompts for credentials:

Confirm the authentication method is Bearer Token (Le Chat detects this from the server).
Paste your Personal Access Token from Step 3 into the token / API key field.
Click Connect to complete the flow.

Step 7: Enable the connector and review its tools

Once connected, DataGalaxy appears in your Connectors list along with the tools it provides (search, get object, get links, get users, get tags, and more). To use it in a conversation:

Start a chat in Work mode.
Click the + icon (or type /) in the message box and select Tools.
Enable the DataGalaxy connector for the conversation, and turn off any tools you don’t need for the current task.

Step 8: Start asking questions

You can now query your governed catalog in natural language. Le Chat will ask for your approval the first time it calls a DataGalaxy tool. Example prompts:

“Search DataGalaxy for objects related to customer revenue and summarise their definitions.”
“Show me the owner, tags, and linked objects for the Customer table.”
“List the business terms in the glossary that mention churn.”

Managing per-function permissions

You control whether Le Chat asks for approval each time it calls a DataGalaxy function, or pre-authorises it:

Go to Connectors and open the My Connectors tab.
Click the DataGalaxy connector card to open its details.
Open the Functions tab and toggle Always Allow for the read functions you use most.

Tip: DataGalaxy MCP is read-only, so pre-authorising its functions is low risk. Even so, review tool inputs and outputs periodically and only enable the tools you actually need.

Troubleshooting

If you see “MCP connection requires additional information or is invalid”, check the following:

Endpoint URL — make sure the path is correct and ends in /mcp/. Remove any accidental extra characters or a doubled trailing slash.
Server reachability — the server must be reachable over HTTPS with a valid TLS certificate.
Authentication — verify your PAT is current and hasn’t been revoked. Regenerate it in DataGalaxy under Profile → Security if needed.
MCP enabled — confirm the MCP Server is active for your organisation (Step 1).

English