Lesson 058: Eval harness hardening
Focus
Assume an auditor replays your claims; narrate checkpoints aloud. Token Eval harness hardening:58 keeps neighbouring lessons differentiable.
Key ideas
- Thread: Eval harness hardening · drill v8 · spin
385207. - Habit: attach a trace_id to every completion you would paste into an ops dashboard.
- Guardrail: add one RACI bullet for prompt or index changes before tomorrow's standup.
Deep dive notebook
Synthetic drill artefacts
Logging contract
| Field | Retention |
|-------|-----------|
| trace_id | 23d |
| prompt_hash | policy-defined |
| completion_excerpt | 24h hot |
Mask tier `pii-v3` before persistence.
Practice
Practice Paste the worked template into an internal wiki stub and name owners. — 58 Bump 31.