Langfuse MCP server with built-in analytics, multi-project routing, and Google OAuth. Token percentiles, accuracy metrics, failure detection, cost breakdowns, session analytics, latency analysis, context breach scanning — plus a hosted-remote deployment story.
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# Langfuse MCP Server [](https://opensource.org/licenses/MIT) [](https://www.python.org/downloads/) <!-- Agent-readable metadata --> <!-- llms.txt: ./llms.txt --> <!-- keywords: langfuse, mcp, model-context-protocol, llm-observability, trace-analysis, ai-agents, claude-code, cursor, codex, langfuse-mcp, llm-analytics, token-usage, accuracy-metrics, failure-detection, cost-tracking, latency-analysis, session-analytics, context-window, prompt-management, dataset-management, mcp-server, llm-monitoring, ai-observability, openai, anthropic, langchain --> [Model Context Protocol](https://modelcontextprotocol.io) server for [Langfuse](https://langfuse.com) observability. Query traces, analyze accuracy, detect failures, track costs, debug latency, manage prompts and datasets. **56 tools** across data access and analytics. Multi-project support so one instance can serve several Langfuse projects. Works with [Claude Code](https://docs.anthropic.com/en/docs/claude-code), [Codex CLI](https://github.com/openai/codex), [Cursor](https://cursor.com), and any MCP-compatible client. ## Why this MCP server? Comparison with [official Langfuse MCP](https://langfuse.com/docs/api-and-data-platform/features/mcp-server) (as of March 2026): | Capability | This server | Official Langfuse MCP | |---|:---:|:---:| | Traces & Observations | Yes | No | | Sessions & Users | Yes | No | | Exception Tracking | Yes | No | | Prompt Management | Yes | Yes | | Dataset Management | Yes | No | | Annotation Queues | Yes | No | | Scores v2 API | Yes | No | | Score Write-back | Yes | No | | **Multi-project support** | Yes | No | | **Accuracy Metrics** | Yes | No | | **Failure Detection** | Yes | No | | **Token Percentiles** | Yes | No | | **Cost Breakdown** | Yes | No | | **Latency Analysis** | Yes | No | | **Session Analytics** | Yes | No | | **Context Breach Scanning*…
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