Braintrust for Gemini CLI

io.github.braintrustdata/braintrust

AI evaluation and observability platform — query experiments, logs, datasets, and prompts.

client:Gemini CLI transport:streamable-http

Install Braintrust in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

{
  "mcpServers": {
    "braintrust": {
      "httpUrl": "https://api{region}.braintrust.dev/mcp"
    }
  }
}

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs