Langfuse for Agents

Launch Week 4 release introducing comprehensive agent tracing capabilities. Features include:

Agent Tools – Tool calls are now rendered at the top of each generation, showing all available tools to the LLM. Click any tool to see its full definition, description, and parameters. In the Chat UI, called tools are displayed alongside their arguments and call IDs with numbering that matches the available tools list.

Trace Log View – New Log View for traces displaying a single concatenation of all observations. Easily skim every agent step by scrolling and use CMD/Ctrl+F to search through entire traces, particularly useful for complex looping agents.

Observation Types – Expanded observation types to bring more meaning to spans, allowing easy identification of action types such as tool calls, embeddings, and agents.

Agent Graphs GA – Agent graphs are now generally available and work with any agent framework or custom instrumentation. The system infers graph structure from observation timings and nesting to visualize true execution flow, especially useful for complex looping observations.