Langfuse MCP Server

Install in Claude Code

claude mcp add langfuse-pulsemcp -e LANGFUSE_SECRET_KEY='<langfuse-secret-key>' -e LANGFUSE_PUBLIC_KEY='<langfuse-public-key>' -- npx -y langfuse-observability-mcp-server

Install in Cursor

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

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

Install in Claude Desktop

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

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

Install in VS Code

{
  "servers": {
    "langfuse-pulsemcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "langfuse-observability-mcp-server"
      ],
      "env": {
        "LANGFUSE_SECRET_KEY": "<langfuse-secret-key>",
        "LANGFUSE_PUBLIC_KEY": "<langfuse-public-key>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

Install in Windsurf

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

Add to ~/.codeium/windsurf/mcp_config.json.