Conciseness

The body is mostly dense commands, tables, and format templates, but the eight-phase breakdown largely restates the Dynamic Phase Selection table, the Overview re-lists what the spec.md format already shows, and 'The system will: 1. Ask about your feature/task...' states the obvious. This matches anchor 3: mostly efficient with some unnecessary explanation that could be trimmed.

Actionability

Nearly everything is copy-paste ready: 'python spec_runner.py --task "Add dark mode toggle to settings page"', 'python validate_spec.py --spec-dir .auto-claude/specs/001-feature --checkpoint all', a batch-creation loop, and a heredoc template. Minor gaps keep it at anchor 4 rather than 5: the troubleshooting hint '(Edit implementation_plan.json to reset context phase)' is not an executable command, and the working directory for 'python run.py --list' is never stated.

Workflow Clarity

The pipeline is clearly sequenced (Discovery through Validation, with a pre-build review checklist and re-validation after edits), but destructive and batch operations lack validation: 'rm -rf .auto-claude/specs/001-feature' has no confirmation or check, and the batch spec-creation loop validates nothing per task. Per the rubric guideline, missing validation in destructive/batch workflows caps this at 3.

Progressive Disclosure

The 345-line body has clean section headers but no reference files at all — everything is inline. In a skill well over 50 lines, content like the phase-by-phase breakdown, JSON format specifications, and troubleshooting clearly could live in separate reference files. This is anchor 3: reasonable structure, but content that should be separate is inline.

Specificity

The description names the domain ('Auto-Claude spec creation and management') but the capability verbs are generic; the only concrete actions ('creating feature specs', 'modifying requirements') appear as trigger phrases rather than described capabilities. Fits anchor 3 (domain plus 1-2 concrete actions, not comprehensive) better than anchor 4, which expects several specific listed actions.

Completeness

An explicit 'Use when...' clause with four concrete triggers satisfies the 'when', and 'spec creation and management' provides a 'what' — but the 'what' is thin, not naming the artifacts produced (spec.md, requirements.json, implementation plan). Anchor 4 (both present, one could be more explicit) fits better than anchor 5.

Trigger Term Quality

Natural phrases like 'creating feature specs', 'spec pipeline phases', 'modifying requirements', and 'spec lifecycle' cover the domain well. Missing common synonyms such as 'specification' or artifact names like 'spec.md', so it falls just short of anchor 5's comprehensive synonym/extension coverage.

Distinctiveness Conflict Risk

The Auto-Claude spec pipeline is a clear niche, but generic triggers like 'creating feature specs' or 'modifying requirements' could fire on ordinary spec-writing requests unrelated to the Auto-Claude tool. Minor overlap risk with general planning/writing skills puts this at anchor 4 rather than 5.