Langfuse
./MonitorOpen-source LLM and agent observability — traces, evals, prompt management, and cost tracking
MCPOpenAPIllms.txt
$ payment protocols
none documented — this service is not reachable over an agent payment protocol
$ agent access
authAPI Key
onboardingFull — agent can self-onboard
tosExplicitly welcomes bots
webhooksYes
free tierYes
billingsubscription
#observability#tracing#evals#open-source#self-hosted
https://langfuse.com
// last verified 8/26/2026
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