Conciseness

The body is lean and assumes Claude's competence — no general-concept padding, and dense tables replace prose. It falls short of the 5 anchor because the project-tier-owns-environment-facts / preserve-existing-labels rule is stated in the Single Source of Truth section, restated in Output Format ("Preserve existing labels referenced by consumers"), and repeated again in template.md — trimmable repetition across sections.

Actionability

Concrete and executable for an instruction-only skill: exact file path (docs/project-context/external-resources.md), fixed heading text ("External Resources Used"), a numbered 3-step reference protocol, and a referenced template defining the exact record/table format. The "Capturing and Updating Records" section is comparatively abstract ("Reuse supplied access details and repository records, verify them within current authority") and fully defers execution detail, keeping it below fully-executable.

Workflow Clarity

The Reference Protocol is a clear 3-step sequence with an explicit failure fallback ("When the file is absent or the resource is unreachable, continue from governing and repository evidence. Each consumer records the limitation"), and staleness correction is delegated to hearing.md. Minor validation gaps remain in the body itself — no verify-after-write checkpoint for newly recorded entries, and the capture loop lives in a reference file rather than the main workflow.

Progressive Disclosure

Verified against the actual bundle: all 6 referenced files exist (hearing.md, template.md, frontend.md, backend.md, api.md, infra.md), the body is a lean overview with point-of-use references plus a References section, and the detailed formats are correctly split into template.md/hearing.md. Minor gaps: the References section descriptions ("Frontend domain axes", "API contract domain axes") are opaque about when to load each file, and hearing.md adds a second hop to the domain files even though they are also listed one level deep in SKILL.md.

Specificity

"Records where resources outside the repository live (design source, design system, API schema, IaC source, secret store) and how design, implementation, and verification reach them" names two concrete recording actions plus an enumerated list of concrete resource types. It falls short of the 5 anchor because it does not list several distinct actions (only record-locations and record-access), but the specific enumeration puts it noticeably above the 1-2-action level of the 3 anchor.

Completeness

It explicitly answers what ("Records where resources outside the repository live ... and how design, implementation, and verification reach them") and when ("Use when work depends on an external resource, or when the user mentions design source, design system, API schema, IaC source, secret store, or canonical source") with concrete trigger phrases, exactly matching the 5 anchor.

Trigger Term Quality

"external resource", "design source", "design system", "API schema", "IaC source", "secret store", and "canonical source" are natural terms a user would plausibly say when needing this skill. A few natural variations are missing — the body itself mentions OpenAPI / proto / GraphQL SDL and equivalents like Terraform or component library — so it is good but not comprehensive, matching the 4 anchor.

Distinctiveness Conflict Risk

The niche (recording locations and access methods of resources outside the repository) is clear and its triggers are largely distinctive (secret store, IaC source, canonical source). However, "design system" and "API schema" are terms other frontend/API skills also trigger on, giving minor overlap risk with closely related skills — the 4 anchor rather than 5.