The Driftproof receipt for code-review-and-quality on claude-fable-5, run on 2026-08-28, and what it can say.
code-review-and-quality on claude-fable-5
Not measured
This receipt carries no verdict: it does not record that a model answered the run.
The two arms
| arm | mean | spread across cases | cases |
|---|---|---|---|
| with the skill | 0.881 | ± 0.014 | 7 |
| without the skill | 0.852 | ± 0.070 | 7 |
No lift is stated for a state that did not measure one. A spread is the sample standard deviation of the per-case means: a descriptive spread with no coverage probability. The verdict above reads each case's two bands, not these aggregates.
What was verified
receipt_hash verified when this page was built from receipts/report-006/code-review-and-quality-claude-fable-5-2026-08-28.json; run.transcripts records hashes-only.
Receipt hash: 965d4dfdcc66916e2a4ba633b58e51f4c908fdaae17f98adf57cb8562aa7630c
Verify this receipt yourself
curl -fsSLO https://raw.githubusercontent.com/driftproofhq/driftproof/main/receipts/report-006/code-review-and-quality-claude-fable-5-2026-08-28.json
npx driftproof validate code-review-and-quality-claude-fable-5-2026-08-28.json