Conciseness

The body is lean and assumes Claude's competence — each section (Workflow, Reference Routing, Operating Rules, Done Criteria) earns its place with no padding or explanation of basic concepts. Not a 2 because there is no unnecessary explanation to trim.

Actionability

Guidance is directional and concrete in intent ('Fill or reshape the spec files with concrete patterns, file paths, examples, and anti-patterns') but provides no executable, copy-paste specifics such as example spec snippets or concrete file skeletons. Not a 1 because it names concrete deliverables; not a 3 because the instructions describe more than they instantiate.

Workflow Clarity

The five-step workflow has a clear sequence and an explicit verification step ('Verify that the final specs are internally consistent and contain no template placeholders') reinforced by a Done Criteria checklist, providing a feedback loop for the file-writing work. Not a 2 because validation is explicit, not implicit.

Progressive Disclosure

A Reference Routing table clearly signals four one-level-deep references (repository-analysis.md, spec-task-planning.md, spec-writing.md, mcp-setup.md), all of which exist in ./references/, keeping the overview slim and navigation easy. Not a 2 because references are well-signaled and content is appropriately split rather than inlined.

Specificity

Lists multiple concrete actions such as 'Bootstrap project-specific Trellis coding specs', 'creating or refreshing .trellis/spec guidelines', and 'writing real codebase-backed spec docs without placeholder text', matching the anchor that names several specific concrete actions.

Completeness

It states what the skill does ('Bootstrap project-specific Trellis coding specs…') and gives an explicit 'Use when…' clause enumerating triggering scenarios, clearly answering both what and when. Not a 2 because the when is explicit rather than implied.

Trigger Term Quality

The explicit 'Use when' clause includes relevant triggers like 'creating or refreshing' and 'analyzing a codebase', but leans heavily on internal jargon (GitNexus, ABCoder, .trellis/spec) that users would not naturally say, so it has some relevant keywords but misses common variations. Not a 3 because natural-term coverage is thin and tool-specific; not a 1 because there are usable trigger phrases.

Distinctiveness Conflict Risk

The niche (Trellis .trellis/spec guidelines) is narrow with distinct triggers tied to a specific spec directory, making conflict with other skills unlikely. Not a 2 because the scope is clearly bounded rather than broadly overlapping.