fail

animate

It missed 3 of 39 requests it should have handled — the skill stayed silent and the model answered on its own.

2026-09-03claude-haiku-4-5-2025100110 attempts per caseclaude-coderun-2026-09-03T11-10-04-411Z-57205e2b

Fired when it should have

fired in 36 of 39 attempts

92%

95% confidence between 80% and 97%. 39 attempts settle it to a narrow range.

Was right when it fired

was right in 36 of 36 attempts

100%

95% confidence between 90% and 100%. 36 attempts settle it to a narrow range.

1 observations could not be read

They are excluded from both rates above rather than counted as successes.

Every case

Instability

3 cases produced both outcomes

The same prompt, the same model, different results. A single run of any of these would have been a coin flip reported as a fact.
  • trigger.positive.sidebar_collapse — 9 passed, 1 failed
  • trigger.positive.hover_card_lift — 9 passed, 1 failed
  • complete.writes_toast_motion — 8 passed, 2 failed

Conditions

Two runs are comparable only when all of these are identical. A score that moved because the model changed is not a regression in the skill.

Skill version
emilkowalski/skills@d23d7f88a2e21c9e4b1418c7abe420f5c1052ba7
Skill hash
sha256:45ba81da9f54aa1d53cb7a5a9cddb141222cad7b11e1c1545175479fd2577d69
Model
claude-haiku-4-5-20251001
System prompt hash
not-provided-by-host
Environment hash
sha256:06935ec7fdf935afec04e70a1c8c39ac1e6f8534978ce40d6cbf622ecc29e6ff
Permission mode
not reported by the host
Host memory
not measured (the record predates 0.4.5 or the probe did not run)
Context hash
not measured (the record predates 0.4.5 or the probe did not run)
Case set version
1
Case set hash
sha256:789aa7faedba46d0adea3c8d1971f39c52a616eb3623ebe466f9fcb88973fbf1
Assay version
0.3.1 or earlier (the record predates version stamping)
Activation check
not made: the record predates 0.2.0, which began confirming that a selected skill actually loaded

Recorded before the host CLAUDE.md leak was closed (Assay 0.4.5). This run’s working directory sat under the measuring machine’s home directory, and Claude Code loads instruction files from every directory above the one it works in, so that machine’s ~/.claude/CLAUDE.md — a single instruction about an unrelated tool, graphify — would have entered the context. Which instruction files actually entered it was not measured.

The name graphify appears in none of this run’s 100 attempts. No trace does not prove no effect.

Not re-measured: no Skill call in any published run targets graphify, and the one finding the file could plausibly affect — the marketing-skills positioning case, 10 of 10 attempts — was reproduced without it, 8 of 10.

What it cost

Attempts
100
Tokens in / out
4,759 / 204,458
Cost
$4.90
Agent time
49 min

Combined trigger score (F1) 0.96 · 96 of 99 trigger decisions were correct.