io.github.avivsinai/langfuse-mcp
Langfuse MCP
Is the Langfuse MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-26.
Langfuse MCP server for accessing and analyzing telemetry data via natural language
alive probed 2026-11-14 · unchanged since 2026-10-26
- Run it
- uvx langfuse-mcp@0.14.0 (stdio, probed in a container with the network off)
- Host
- pypi.org
- Reports itself as
- Langfuse MCP Server
- Capabilities
- prompts, resources, tools
- Instructions
- none
- Of a 1M window
- 2.4 % of a 1M context window
- Count
- 24k tokens in Claude Opus 5.5, exact, measured 2026-10-26. With the Claude Code prefix mcp__…__ on each tool name: 25k. The o200k_base estimate is 14k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/avivsinai/langfuse-mcp
- Website
- https://github.com/avivsinai/langfuse-mcp
- Registry
- active, updated 2026-10-25 · registry entry
- Changes
- 2 recorded, reachable in 2 of them. A row is added when the result, the tool count or the cost changes.
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.75×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| query_metrics | 1 680 | 961 | 7 % |
| list_scores_v2 | 1 321 | 756 | 5 % |
| fetch_observations | 1 248 | 714 | 5 % |
| fetch_trace | 1 047 | 599 | 4 % |
| get_user_sessions | 939 | 537 | 4 % |
Compare this server with others.
More servers
Other registry entries on pypi.org, the ones next to this name; all of them.
- Qdrant MCP io.github.avaazquezz/mcp-qdrant · needs env
- io.github.avansaber/seo-monster · alive
- skimread io.github.avikchakraborty060-create/skimread · alive
- io.github.avinash111921/codeforces-mcp · alive
- AWS MCP Server io.github.aws/aws-mcp · crashed on start
- AWS MCP Server io.github.aws/mcp-proxy-for-aws · crashed on start
- MCP Server for OSCAL io.github.awslabs/mcp-server-for-oscal · crashed on start
- io.github.aybeeare/water-conditions · not probed
Servers that mention langfuse.
- Langfuse API io.github.rodrigorjsf/langfuse-api-mcp · crashed on start
- com.pulsemcp/langfuse · alive
- Enterprise Internal Knowledge Base: Production-Ready RAG + MCP io.github.kimsb2429/internal-knowledge-base · not probed
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-26 06:59 | alive | 3.0 s | 48 | 24k | 14k |
| 2026-10-16 06:24 | alive | 3.9 s | 48 | 24k | 14k |
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- This server is in the heaviest 10 % of the registry. Shorter descriptions, fewer optional parameters and fewer tools cut the cost. The command npx mcpcost --url <endpoint> --tools 50 lists every tool with its cost.