Langfuse
./MonitorOpen-source LLM observability, tracing, and evaluation
OpenAPI
$ protocol support
[✗]MCP Server
[✓]OpenAPI Spec
[✗]Accepts MPP
[✗]Accepts x402
[✗]Supports ACP
[✗]Supports UCP
[✗]Skill File
[✗]Plugin Manifest
[✗]llms.txt
[✗]Structured Feed
[✗]Agent Protocol
$ agent access
authAPI Key
onboardingPartial — dashboard signup, then API key
tosExplicitly welcomes bots
webhooksYes
free tierYes
billingsubscription
#observability#tracing#llm#open-source
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