Conciseness

The body is dense and operational — tables carry rules without padding, and nothing explains concepts Claude already knows. However, the time-sensitive snapshot stamp ('spec v1.58.0, researched 2026-07-05') appears twice (intro and report template) and is not isolated in a deprecated/old-patterns section, which the guidelines explicitly penalize. Between anchors: clearly above the 3-anchor's 'some unnecessary explanation' but not the 5-anchor's 'every token earns its place'.

Actionability

Fully executable guidance: concrete commands ('Grep -n '^##' docs/otel-spec/<file>.md' then 'Read' with offset/limit, 'git diff', 'git show <sha>', 'bun typecheck', 'cargo check'), a copy-paste findings-report template with a worked example row, and a classification example showing exact output format. Matches the 5-anchor's copy-paste-ready commands covering common cases.

Workflow Clarity

Six clearly sequenced steps with explicit checkpoints and feedback loops: classification is shown to the user for correction before reviewing (Step 2), the findings report precedes any edit (Step 5), and fixes are followed by build re-verification with a fix-or-revert loop ('A fix that breaks the build is a regression: fix or revert it'). The 5-anchor (clear sequence, explicit validation, error-recovery feedback loops) fits; the 4-anchor's 'minor validation gaps' is not present.

Progressive Disclosure

The skill is a routing hub over one-level-deep corpus files (docs/otel-spec/*.md) with a routing table, a grep-then-read loading rule, and an explicit read budget — references are clearly signaled and easy to navigate. The inline 16-row quick table is justified as a cache so trivial reviews load zero spec files, which is progressive disclosure working correctly, not misplaced content. Matches the 5-anchor; no nested or buried references exist.

Specificity

Names the concrete deliverable ('Review a diff, PR, or specific file … for OpenTelemetry specification compliance', 'Spec findings: MUST/SHOULD violations with normative citations') and enumerates the exact surfaces and file paths it covers (OTLP server in apps/ingest, self-instrumentation, span status / SeverityNumber / db.query.text consumers). This matches the 5-anchor of multiple specific concrete actions with comprehensive coverage; the 4-anchor's 'minor gaps in coverage' doesn't apply since the scope is fully enumerated.

Completeness

Explicitly answers both 'what' (spec-compliance review of diffs/PRs/files, MUSTs and SHOULDs only, grounded in the docs/otel-spec/ corpus) and 'when' ('Triggers on requests like … and on reviews of changes touching …' with concrete trigger phrases). This is the 5-anchor verbatim; the 4-anchor's 'when could be more explicit' does not apply.

Trigger Term Quality

Includes six quoted natural trigger phrases users would actually say ('is this spec compliant', 'spec-review this diff', 'are these retryable status codes right', 'does apps/ingest honor the OTLP spec') plus content-signal triggers, covering synonyms and phrasing variations. Comprehensive natural-term coverage matches the 5-anchor; the 4-anchor's 'a few natural terms missing' is not the case.

Distinctiveness Conflict Risk

Explicitly disambiguates the three neighbor skills by name ('For Maple house conventions use maple-telemetry-conventions; for whole-project instrumentation audits use maple-audit; for general diff correctness use /code-review') and carves a tight niche (OTel spec compliance, repo-specific paths). Clear niche with distinct triggers and minimal conflict risk — the 5-anchor; the 4-anchor's 'minor overlap risk' is not present.