Langfuse
Open-source platform for tracing, prompt management and evaluation of LLM apps, self-hosted or as a cloud service.
- Open source
- Can run on your own servers
- Developer API
Open-source command-line tool for testing prompts and agents against test cases and probing them for security issues.
Not enough info yet on developer API, works with MCP. Check the tool's own site.
Listing written by WithAutobot, checked 2026-11-04. Report a correction or request removal. Back to agent observability and evaluation.