Langfuse
Open sourceOpen-source LLM observability — traces, evals, and prompt management for the agents you run in production.
Tools
Open-source automation platform whose 280+ integrations double as MCP tools — agents call the same pieces your workflows use.
It attacks automation from the agent side: every connector is exposed as an MCP tool, so the boundary between workflow and agent capability disappears. Self-hosted, it's the most direct open-source route to giving agents governed access to your martech stack.
Self-host it, connect two marketing apps you already use, and point an MCP client at its toolkit to drive them from chat.
More from the same categories.
Open-source LLM observability — traces, evals, and prompt management for the agents you run in production.
Source-available workflow automation with first-class AI nodes — the engineering-friendly backbone for production marketing agents.
Open-source testing and eval harness for LLM apps — write test cases, run them across models, and catch regressions before they ship.