PlaybookEngineering
Standing up a continuous evaluation harness.
A practical playbook for building the harness that catches drift before your users do — from golden set to gated releases.
01
Phase 1
Build the golden set
Curate a representative, labelled set the harness scores against.
- Sample real cases across the distribution the system actually faces.
- Label them with the owner who is accountable for the decision.
- Freeze a version and store it with the baseline.
02
Phase 2
Blend in production traffic
A frozen set rots; pair it with a rolling live sample.
- Sample production traffic continuously and score it alongside the golden set.
- Watch the gap between launch-baseline and live-sample scores.The gap is the drift signal.
03
Phase 3
Gate the releases
Make the harness a condition of shipping, not a report.
- Fail the build when quality moves beyond a defined threshold.
- Route failures to the decision owner with the evidence attached.
- Record every run so the trend is auditable.
When you’re done
- Drift detected weeks before users report issues.
- Releases gated on measured quality, not hope.
- An auditable evaluation trend for every change.
Build the harness with us.
We will instrument one production workflow with continuous evaluation, end to end.