Conciseness

The body is largely lean — bash snippets like `FILE=$(echo "$INPUT" | jq -r '.input.file_path // empty')` earn their tokens, and concepts are not over-explained. Minor over-explanation remains in repeated 'Why this matters' callouts and redundant 'For ... patterns: Load references/...' pointers (security/perf refs appear 3+ times each). Not a 5 due to this repeat padding; not a 3 because the bulk is efficient and assumes Claude's competence.

Actionability

Quote: `prettier --write "$FILE"`, `if command -v prettier &>/dev/null`, and the validated `rm` path with `[[ "$FILE" == "$CLAUDE_PROJECT_DIR"* ]]` checks — fully executable, copy-paste ready bash covering common cases (quoting, validation, backgrounding, exit codes). Matches anchor 5 'fully executable; copy-paste ready code'.

Workflow Clarity

The 'Hook Design Checklist' sequences decisions (event → matcher → input → type → exit code) and the 'Final Checklist' plus 'Critical Rules' provide explicit checkpoints. Validation guidance (validate before use, exit 2 to block) is present. Not a 5 because there is no explicit validate→fix→retry feedback loop narrative for destructive hook actions, and not a 3 because most checkpoints are explicit and concrete.

Progressive Disclosure

Six real reference files (security-requirements.md, reliability-performance.md, code-templates.md, testing-debugging.md, publishing-guide.md, quick-reference.md — all verified present) are clearly signaled via a dedicated 'When to Load References' section with load triggers, one level deep. However line 259 references `references/hook-templates.md`, which does NOT exist in the bundle — a broken navigation pointer. Not a 5 due to that dangling reference; not a 3 because the overall structure is well-organized and navigable.

Specificity

Quotes 'validates design decisions, enforces best practices, and prevents common pitfalls' alongside the 'writing secure, reliable, and performant Claude Code hooks' domain — several concrete actions, but they are somewhat abstract verbs rather than the most granular capabilities (no mention of input validation, exit codes, matchers). Not a 5 because coverage of specific hook-writing actions is implied rather than enumerated; not a 3 because it does list multiple distinct actions beyond a single one.

Completeness

Quote explicitly answers 'what' ('Expert guidance for writing secure, reliable, and performant Claude Code hooks - validates design decisions, enforces best practices, and prevents common pitfalls') and 'when' ('Use when creating, reviewing, or debugging Claude Code hooks') with concrete trigger phrases. Matches the anchor 5 example structure of clear what + explicit 'Use when' clause; not below 5 since both halves are present and concrete.

Trigger Term Quality

Quote: 'Use when creating, reviewing, or debugging Claude Code hooks' provides natural terms a user would say, but misses common synonyms/variations (e.g., 'optimizing hooks', 'securing hooks', 'publishing hooks' that the body covers) and any artifact-style phrasing. Good coverage with a few natural terms missing, so not a 5; clearly more than 'some relevant keywords', so not a 3.

Distinctiveness Conflict Risk

Quote: 'Claude Code hooks' is a clear niche with distinct triggers ('creating, reviewing, or debugging Claude Code hooks') and minimal conflict risk with other skills. It targets a specific artifact type, matching the anchor 5 'clear niche with distinct triggers'; not a 4 because the niche is well-bounded rather than having minor overlap.