Conciseness

Dense rule tables with no padding and no explanation of concepts Claude already knows, but retrieval instructions appear three times — the "Retrieval Sources" table, the "FIRST: Fetch Latest References" section, and a bash block that duplicates the same npm pack command already in references/review.md. That is a trim candidate, placing it at 'efficient with minor over-explanation' rather than the lean 5.

Actionability

Concrete commands are present (npm pack for latest types, `npx tsc --noEmit`, `wrangler secret put`, `wrangler types`) and every rule table names specific APIs and flags rather than vague direction. However, TypeScript code examples are entirely deferred to references/rules.md, so the body's guidance is mostly-executable with a minor gap — the 4 anchor.

Workflow Clarity

The 8-step Review Workflow is clearly sequenced and includes a validation checkpoint ("Validate with tools — `npx tsc --noEmit`, lint for `no-floating-promises`"), with retrieve-before-flagging as a first step. It stops short of the 5 anchor because there is no explicit error-recovery loop (what to do when validation or retrieval fails before flagging).

Progressive Disclosure

Both referenced files (references/rules.md, 463 lines; references/review.md, 174 lines) exist, are one level deep, and are clearly signaled with their purpose ("all best practice rules with code examples and anti-patterns"; "type validation, config validation, binding access patterns, review process"). The body keeps terse quick-reference summaries inline and defers details appropriately — a clear overview with well-signaled references.

Specificity

Names multiple concrete actions — "Reviews and authors Cloudflare Workers code", "configuring wrangler.jsonc", "checking for common Workers anti-patterns (streaming, floating promises, global state, secrets, bindings, observability)" — with concrete sub-areas. Comprehensive coverage for the domain, matching the top anchor rather than the 'minor gaps' of a 4.

Completeness

Explicitly answers both: what ("Reviews and authors Cloudflare Workers code against production best practices") and when ("Load when writing new Workers, reviewing Worker code, configuring wrangler.jsonc, or checking for common Workers anti-patterns"). The explicit 'Load when...' clause with four concrete triggers matches the 5 anchor exactly; the presence of that clause also lifts it above the level-3 cap.

Trigger Term Quality

Natural trigger phrases users would say ("writing new Workers", "reviewing Worker code", "streaming", "secrets", "bindings", "observability") plus the config file extension "wrangler.jsonc", giving comprehensive coverage including synonyms and extensions as the 5 anchor requires.

Distinctiveness Conflict Risk

Clear niche (Cloudflare Workers specifically) with distinct triggers like "wrangler.jsonc" and Workers-specific anti-patterns. Third-person voice is used correctly, and nothing generic is present that would fire adjacent skills (Durable Objects, Workflows, Wrangler) unintentionally.