Conciseness

The body is dense, expert-level, and assumes prior knowledge (no explaining what OTel or Jinja2 is), but there are trimmable repetitions: the `semconv_grouped_*({"v2": true})` guidance appears in Non-Negotiable Rules, Gotchas 3 and 5, and the Verification Contract, and Gotcha 10 restates the boundary-domain rule from the Non-Negotiable Rules. It fits the score-4 anchor (efficient with minor instances that could be trimmed) better than score 3, since there is no padding or explanation of known concepts — the duplication is deliberate emphasis rather than unnecessary explanation — but inline time-sensitive version pins (v0.26.1, v1.44.0, v0.22.0) scattered outside any deprecated/version section keep it below score 5.

Actionability

Guidance is copy-paste executable throughout: exact commands (`weaver registry check --v2 -r ./telemetry/registry/`, `weaver registry generate --v2 --registry ... --templates ... <lang> <output-dir>`), concrete file layouts (`manifest.yaml`, `templates/registry/<lang>/` with `weaver.yaml`), a worked filter example (`attr.brief | comment(format="go")`), and specific naming rules. This matches the score-5 anchor of fully executable commands covering the common cases; score 4 would require gaps in the concrete guidance, and the deferred details are all in real bundle files rather than missing.

Workflow Clarity

The five-step Workflow is clearly sequenced with validation built in (step 4 is a fast-feedback check, step 5 wires three CI gates), and the Verification Contract adds explicit validation steps, a re-read requirement, and a `[x]/[~]/[ ]` checklist with an unresolved-items escape hatch — feedback loops for error recovery. This matches the score-5 anchor (clear sequence, explicit validation, checklists); score 4's 'minor validation gaps' does not apply given the dedicated verification section.

Progressive Disclosure

The SKILL.md body is a genuine overview with a dedicated 'References To Load On Demand' section pointing to four real, one-level-deep files (`references/registry-authoring.md`, `template-authoring.md`, `ci-integration.md`, `migration-playbook.md` — all verified present, none nesting further into local files) plus companion skills, and detailed material like field tables and CI YAML is correctly kept out of the body (the `scripts/inspect-resolved.sh` helper backs the template workflow). This matches the score-5 anchor: clear overview, well-signaled one-level-deep references, easy navigation.

Specificity

Names multiple concrete actions with comprehensive coverage: "registry authoring, codegen, and CI enforcement", "authoring or reviewing a registry (manifest, attributes, metrics, spans, events)", "writing Jinja2 templates against the resolved schema", "migrating hand-maintained telemetry constants", and wiring specific subcommands into CI. This matches the score-5 anchor of multiple specific concrete actions with comprehensive coverage; it is clearly above the score-4 anchor, which allows minor gaps in coverage.

Completeness

Explicitly answers both: the "what" opens with concrete capabilities ("registry authoring, codegen, and CI enforcement") and the "when" is an explicit trigger clause ("Use when adopting Weaver, authoring or reviewing a registry (...), writing Jinja2 templates..., migrating hand-maintained telemetry constants, or wiring `weaver registry check`/`generate`/`diff` into CI"). This mirrors the score-5 exemplar nearly exactly; score 4 would require a less explicit or less specific 'when', which is not the case here.

Trigger Term Quality

Good natural trigger coverage: "adopting Weaver", "authoring or reviewing a registry", "writing Jinja2 templates", "migrating hand-maintained telemetry constants", "wiring ... into CI", plus tool-specific subcommand names. It falls short of the score-5 anchor because common user phrasings like "semantic conventions" or "semconv" — the core concept a user would naturally name — are absent, matching the score-4 anchor of good coverage with a few natural terms missing rather than score 5's comprehensive synonyms.

Distinctiveness Conflict Risk

A clear niche with distinct triggers: the description is anchored to the specific tool "OpenTelemetry Weaver" and its exact subcommands, so it is unlikely to fire for unrelated telemetry or templating skills. It matches the score-5 anchor (clear niche, distinct triggers, minimal conflict risk) and is well above the score-4 anchor's 'minor overlap risk with closely related skills'.