Connect while to Mistral Vibe, formerly Le Chat, over MCP
Mistral’s Le Chat is now called Vibe. Connected to while with an MCP connector, it deploys your apps, with their database, and asks for your approval on what matters.
By Aloïs Oddon, co-founder of Nextmap. Facts checked on November 5, 2026.
Prerequisites
- A Mistral Vibe account, formerly Le Chat1.
- The right to add a connector: on the Free, Pro and Student plans, the account holder has it by default2.
Step 1: Add while as a connector
Open the Connectors page, click ”+ Add Connector”, then the Custom MCP Connector tab2. Name it while, with no spaces, and paste the address of while’s MCP server:
https://app.while.sh/mcpClick Connect: Vibe detects while’s OAuth authentication on its own2.
Step 2: Authorize it in your browser
A while page opens. Choose “A new app”, then click Authorize.
What your agent does
Vibe then sees while’s tools: deploy, create a database, read the logs, query the database, open a preview, roll back. In the conversation, it sends your app’s files to while in its tool calls, then deploys it.
Deploy what Vibe just wrote
You, to your agent: Deploy this app with while.
Vibe writes while.yaml, sends the code, and gives you your app’s address, over HTTPS.
Query your database
You, to your agent: How many sign-ups this week?
Vibe reads your database in SQL over MCP, with your permissions on the data, and can’t write to it.
Go back to the previous version
You, to your agent: Go back to the previous version.
In the 30 minutes after a deployment, the previous version comes back in a second. After that, it takes a few seconds.
In the docs: Previews and Versions and rollback.
Next steps
Sources
- Mistral, Le Chat is now Vibe, accessed November 5, 2026
- Mistral, custom MCP connectors, accessed November 5, 2026