langfuse

Installation
SKILL.md

Langfuse Observability Skill

Query Langfuse observability data via REST API to debug agent runs, analyze LLM costs, and inspect prompt versions. This skill complements the Langfuse Prompt MCP (built-in) which handles prompt CRUD — this skill covers everything else.

Prerequisites

Authentication: All API calls require HTTP Basic Auth.

  • Username: LANGFUSE_PUBLIC_KEY (e.g., pk-lf-...)
  • Password: LANGFUSE_SECRET_KEY (e.g., sk-lf-...)

Base URL: Read from .env:

grep LANGFUSE_BASE_URL .env  # e.g., http://localhost:4300

Quick connectivity check:

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Installs
22
First Seen
Mar 31, 2026