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Devin Desktop is Cognition’s AI-native IDE. The Braintrust MCP server connects to Devin Desktop, giving its coding agent access to your Braintrust projects, experiments, and logs.

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Setup

1

Choose authentication

Use OAuth when your client supports it. Your client opens a Braintrust authorization page where you sign in and approve access. The server acts with the permissions of the account you sign in with.
  • No Braintrust API key required
  • No OAuth client ID or client secret to configure
The server implements OAuth 2.0 with dynamic client registration and publishes its metadata at /.well-known/oauth-authorization-server on the same host as your MCP endpoint (see next step), so a client can register itself.
2

Choose your endpoint

Use the endpoint for your organization’s data plane region:Other connection details:
  • Self-hosted: Copy the MCP URL from Settings > Data plane. This is your Braintrust API URL with /mcp appended.
  • Transport: If your client asks you to choose a transport, choose HTTP (also called streamable HTTP). SSE-only clients can’t connect.
3

Add the server to Devin Desktop

Follow the Devin guide to add the remote server. If you use the legacy Cascade agent, see the Cascade guide instead.
4

Verify the connection

To verify the connection, ask Devin Desktop's agent to list your recent Braintrust projects. If it can’t connect, see Braintrust MCP troubleshooting.
5

Start using Braintrust tools

Devin Desktop's agent can query logs, compare experiments, work with datasets, and use other Braintrust tools. For example:
  • “Show me my recent Braintrust experiments.”
  • “Query the last 10 logged requests with errors.”
  • “Compare accuracy scores between my two latest experiments.”
See what the Braintrust MCP can do for more workflows and example prompts.

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Next steps