Langfuse MCP
@therealsachin
About Langfuse MCP
Production-ready Langfuse MCP Server with 28 tools for LLM analytics, cost monitoring, and dataset management. Features secure dual-mode operation (readonly & readwrite), real-time cost analysis, trace debugging, and comprehensive usage insights. Deploy instantly with npx for sea
Config
Add this server to your MCP-compatible client using the configuration below.
{
"mcpServers": {
"langfuse-mcp": {
"command": "npx",
"args": [
"langfuse-mcp"
],
"env": {
"LANGFUSE_SECRET_KEY": "<YOUR_LANGFUSE_SECRET_KEY>",
"LANGFUSE_PUBLIC_KEY": "<YOUR_LANGFUSE_PUBLIC_KEY>",
"LANGFUSE_HOST": "<YOUR_LANGFUSE_URL>"
}
}
}
}Tools
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Overview
What is Langfuse MCP?
Comprehensive MCP server providing 28 powerful tools for Langfuse analytics, cost monitoring, and dataset management. Built for production environments with enterprise-grade security features.
How to use Langfuse MCP?
Run npx @therealsachin/langfuse-mcp --readwrite with environment variables LANGFUSE_PUBLIC_KEY, LANGFUSE_SECRET_KEY, and LANGFUSE_BASEURL. Alternatively install globally via npm and run with --readonly or set the LANGFUSE_MCP_MODE environment variable.
Key features of Langfuse MCP
- Real-time analytics: cost analysis, usage tracking, trace debugging
- Dual security modes: readonly (default) and readwrite with audit logging
- Dataset management: complete CRUD operations for training datasets
- Advanced debugging: trace details, observation analysis, model insights
- Cost optimization: usage by model/service, expensive trace identification
- Production security: HTTPS validation, pre-commit hooks, credential scanning
Use cases of Langfuse MCP
- AI teams managing LLM costs and performance
- DevOps engineers monitoring production AI systems
- Data scientists analyzing model usage patterns
- Product teams optimizing AI feature costs
FAQ from Langfuse MCP
What security modes does Langfuse MCP support?
Langfuse MCP supports two modes: readonly (safe default) and readwrite (requires explicit --readwrite flag). Audit logging and HTTPS enforcement are included.
What environment variables are required to run Langfuse MCP?
You need LANGFUSE_PUBLIC_KEY, LANGFUSE_SECRET_KEY, and optionally LANGFUSE_BASEURL (defaults to https://us.cloud.langfuse.com).
How can I install Langfuse MCP?
You can run it via npx (npx @therealsachin/langfuse-mcp) or install globally with npm (npm install -g @therealsachin/langfuse-mcp).
How does Langfuse MCP ensure production security?
It enforces HTTPS to prevent credential leaks, provides pre-commit hooks with Gitleaks integration for credential scanning, and logs all write operations for audit.
Frequently asked questions
What security modes does Langfuse MCP support?
Langfuse MCP supports two modes: readonly (safe default) and readwrite (requires explicit `--readwrite` flag). Audit logging and HTTPS enforcement are included.
What environment variables are required to run Langfuse MCP?
You need `LANGFUSE_PUBLIC_KEY`, `LANGFUSE_SECRET_KEY`, and optionally `LANGFUSE_BASEURL` (defaults to `https://us.cloud.langfuse.com`).
How can I install Langfuse MCP?
You can run it via npx (`npx @therealsachin/langfuse-mcp`) or install globally with npm (`npm install -g @therealsachin/langfuse-mcp`).
How does Langfuse MCP ensure production security?
It enforces HTTPS to prevent credential leaks, provides pre-commit hooks with Gitleaks integration for credential scanning, and logs all write operations for audit.
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