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mcp/harbor
Gemini CLI

langfuse for Gemini CLI

com.pulsemcp/langfuse

MCP server for Langfuse LLM observability — trace and observation analysis.

client:Gemini CLI transport:stdio runtime:npm

Install langfuse in Gemini CLI

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

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "langfuse": {
      "command": "npx",
      "args": [
        "-y",
        "langfuse-observability-mcp-server"
      ],
      "env": {
        "LANGFUSE_SECRET_KEY": "<LANGFUSE_SECRET_KEY>",
        "LANGFUSE_PUBLIC_KEY": "<LANGFUSE_PUBLIC_KEY>",
        "LANGFUSE_BASE_URL": "<LANGFUSE_BASE_URL>"
      }
    }
  }
}

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

langfuse in other clients

langfuse MCP server