The Driftproof receipt for find-skills on Claude Haiku 5.5, from Report 018, dated 2026-11-02, and what it can say.
find-skills on claude-haiku-5-5
No verdict: delegated skill not tested
These text tasks test the router's written response, not the delegated skill. Report 015 Amendment 1.
The two arms
| arm | mean | spread across cases | cases |
|---|---|---|---|
| with the skill | 0.850 | ± 0.050 | 3 |
| without the skill | 0.833 | ± 0.029 | 3 |
These arm summaries describe the recorded answers. They do not measure the delegated skill. A spread is the sample standard deviation of the per-case means: a descriptive spread with no coverage probability. No verdict is assigned to these text tasks.
This receipt also reads the skill against a same-length placebo. Report 018 shows that reading.
What was verified
receipt_hash verified when this page was built from receipts/report-018/campaign-3/31e236a9103896b1905877ed0e997042a18ec615b8dee14676beedbda441e389.json; run.transcripts records retained-local.
Receipt hash: 62dc3eb753192c43c0dbae28aae9f4a7a901f93316437a134864024ecb12ccc9
Check this file yourself
validate shows that this file is unchanged since it was sealed. It does not show who made it or who sealed it.
curl -fsSLO https://raw.githubusercontent.com/driftproofhq/driftproof/main/receipts/report-018/campaign-3/31e236a9103896b1905877ed0e997042a18ec615b8dee14676beedbda441e389.json
npx driftproof@0.27.0 validate 31e236a9103896b1905877ed0e997042a18ec615b8dee14676beedbda441e389.json