Conciseness

Operational throughout — commands, verdicts, gates — with no explanations of concepts Claude already knows, but there is trimmable redundancy: the opening phase→rule table and the closing "Required Reading by Phase" table duplicate each other, and the 2/5 confirmation-bar rationale is restated in Phase 4, Core Principle 1, and the Definition of Done. Fits "efficient; minor instances of over-explanation that could be trimmed"; not 3 because none of it is padding or assumed-knowledge explanation.

Actionability

Copy-paste-ready commands throughout — "git rev-parse --abbrev-ref HEAD", "gh pr list --head \"<branch>\" --state open --json number,url --limit 1", "gh pr checks <pr-number> --repo <owner/repo>", "ANTHROPIC_API_KEY=… node scripts/eval/l2.mjs --suite <name>" — plus a complete Phase 6 report template and concrete dispatch strings ("Skill(\"confidence\", \"analysis\")"). Covers the common cases end-to-end; not 4 because there is no gap between instruction and execution.

Workflow Clarity

Phases 0–6 are explicitly sequenced with validation checkpoints at every stage: capture BASELINE_FAILURE "before doing anything else", "Stop at the first failure inside that window", a feedback loop ("return to Phase 2 with the latest failure output as new evidence"), a hard iteration cap with stop conditions, and a Definition of Done checklist. Exemplary match to the top anchor; the destructive-operation cap does not apply because eval edits are gated by independent checks.

Progressive Disclosure

The orchestration-index design is right — a phase→rule table, "Load the matching rule file when you need detail — do not preload them", one-level-deep references — but all three referenced files (rules/eval-bug-classification.md, rules/anti-gaming-guard.md, rules/convergence-confirmation.md) are absent from the bundle, so the disclosure chain breaks at runtime and the detail they promise cannot be verified. Structure alone merits 4, but unresolvable references cap it at 3; not 2 because the in-file organization and signaling are strong, not buried.

Specificity

Lists multiple concrete, quantified actions — "Classifies the failure as a code bug, an eval-definition bug (stale golden item / criteria drift), judge-drift … or flaky", "Applies the minimal fix", "requires N consecutive confirming re-runs — 2 deterministic, 5 for anything a model call grades", "Hard-capped at 5 fix iterations" — covering the entire loop with parameters (90% confidence gate, log requirement). Matches the comprehensive-coverage anchor; not 4 because there are no minor gaps in what the skill does.

Completeness

Explicitly answers both what ("Iterates on a failing AI/LLM eval … until it is green AND confirmed", classify → fix → confirm → gate) and when ("Use when an eval is failing on a PR and needs a real, non-gamed green"), followed by concrete trigger phrases. Clear top-anchor match; the ≤3 cap for a missing 'Use when' clause does not apply.

Trigger Term Quality

Six explicit natural trigger phrases — "this eval is failing", "iterate on this eval", "fix this eval", "get this eval green", "optimize this eval", "/eval-iterate" — are exactly what a user would type, reinforced by domain synonyms in the body of the description ("L2 suite", "golden-set / judge eval", "eval gating a PR"). Not 4: synonym coverage of the core noun and its common phrasings is thorough for this domain.

Distinctiveness Conflict Risk

Occupies a clear niche — iterating failing AI/LLM evals with anti-gaming gates — with triggers ("get this eval green", "/eval-iterate") no generic test/debug skill would claim. The named overlap with composed skills ("Composes `ai-engineering`, `confidence`, `critical`, `verify-behavior`") is explicitly framed as composition, keeping conflict risk minimal; not 4 because the trigger surface is distinct rather than merely 'mostly distinct'.