Fig 1How Aftertrace worksPoint at a station · click to go deeperClaude Code, the Agent SDK and your apps send OpenTelemetry
The station you point at (or step to with the arrow keys)Light in the troughs: traces in indigo, logs in teal, metrics in amberC flips the content lever (--store-content); A unlocks the outbox (Ask)Everything runs in one binary on your machine. Sources send OpenTelemetry to the receivers on ports 4317 and 4318; redaction drops 6 identity keys always and 41 content keys unless you run with --store-content; what is left is written to 4 tables in one DuckDB file; 14 SQL rules turn it into findings; the UI and API on port 7311 read it. Nothing leaves unless you switch on Ask.