fetch_trace
Retrieve detailed Langfuse trace data including observations, payloads, metadata, and performance metrics for LLM application debugging and analysis.
Instructions
Returns the full detail of a single Langfuse trace identified by its ID.
The response includes all observations (spans, generations, events) nested under the trace, as well as input/output payloads, metadata, tags, latency, and token usage.
Use this after fetch_traces to drill into a specific trace. The traceId is required.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| traceId | Yes | The Langfuse trace ID (UUID). Required — the call will be rejected if this is missing or blank. |