Langfuse API MCP Server

What the code does

We read the source, 3 h ago · rules ccca72095570

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

const child = spawn(binary, process.argv.slice(2), { stdio: "inherit", shell: false, windowsHide: true });

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add langfuse-api-mcp -- npx -y langfuse-api-mcp

{
  "mcpServers": {
    "langfuse-api-mcp": {
      "args": [
        "-y",
        "langfuse-api-mcp"
      ],
      "command": "npx"
    }
  }
}

[mcp_servers.langfuse-api-mcp]
command = "npx"
args = ["-y", "langfuse-api-mcp"]

{
  "mcpServers": {
    "langfuse-api-mcp": {
      "args": [
        "-y",
        "langfuse-api-mcp"
      ],
      "command": "npx"
    }
  }
}

{
  "mcpServers": {
    "langfuse-api-mcp": {
      "args": [
        "-y",
        "langfuse-api-mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: LANGFUSE_PUBLIC_KEY (The project's public key (pk-lf-...).), LANGFUSE_SECRET_KEY (The project's secret key (sk-lf-...).), LANGFUSE_BASE_URL (Your Langfuse host, e.g. https://cloud.langfuse.com; https only, http only for localhost.), LANGFUSE_CA_CERT (Optional PEM file with your corporate or private CA, added to the system trust store.). The author declared them in the registry entry; get the values from the project itself.