Diagnose a trace
Paste or drop a run you already recorded. Tracedown finds the step that caused the failure. Nothing to install in your agent.
No file at hand? Try
Where to get a trace. Langfuse: open a trace and use the download button, or GET /api/public/traces/<id>. OpenTelemetry: any OTLP/JSON file, for example from the collector's file exporter or Arize Phoenix.
What happens to it. It is stored on this Tracedown server, in the project “pasted”, like any other run. For many runs at once, use tracedown-import.