Conciseness

The body is dense and imperative throughout — a file-by-file support map and numbered workflow where every clause carries repo-specific detail (e.g., "Regenerate it; do not hand-edit it", "Keep command names lowercase in generator maps"). No concepts Claude already knows are explained, and there is no padding, matching 'every token earns its place'; the score-4 anchor's 'minor instances of over-explanation' do not materialize.

Actionability

Guidance is fully executable: exact commands (`node bin/index.js`, `npm run build`, `npx tsd --files test/typing/commands.test-d.ts`), exact import paths (`import Redis from "../../../lib/Redis"`), file paths, naming conventions, and concrete test patterns (`${command}_${caseName}_${Date.now()}`). It matches 'copy-paste ready code or commands; specific examples cover the common cases'.

Workflow Clarity

The 8-step sequence has explicit validation checkpoints (step 8: regenerate, run focused test, build, tsd) plus error-recovery loops — "If it is missing there, stop and report", "If generation changes unrelated commands, inspect the generator input and do not accept surprising churn". This matches the top anchor (clear sequence, explicit validation, feedback for error recovery) rather than the score-4 anchor, which has minor validation gaps.

Progressive Disclosure

Sections are well organized (Command Support Map, Workflow, Completion Report) and the single-file layout is navigable, but the body is ~90 lines with no bundle or reference files, so the 'under 50 lines' simple-skill exception does not apply cleanly, and the 13-entry Command Support Map plus test-convention details are inline content that could be split into a reference file. Good structure with minor organization gaps fits score 4 better than the reference-splitting exemplar at 5.

Specificity

The description enumerates concrete components of the job — "command metadata checks, generator inputs under bin/, generated RedisCommander typings, return and argument overrides, functional command tests, optional tsd coverage, and validation" — covering the full workflow rather than 1-2 generic actions. It clearly matches the 'multiple specific concrete actions; comprehensive coverage' anchor and exceeds the score-4 example, which only has 'minor gaps'.

Completeness

It explicitly answers both questions: the what ("adding or updating Redis command support in ioredis, including command metadata checks, generator inputs...") and the when ("Use when adding or updating Redis command support in ioredis") with a concrete trigger clause. The score-4 anchor requires an only-weakly-explicit 'when', which does not apply here.

Trigger Term Quality

"adding or updating Redis command support in ioredis" and "Redis command" are natural phrases a user would say, giving good coverage, but common variations users might voice ("command signature", "fix a return type", "typed command") appear only as technical phrasing like "return and argument overrides". This sits between the score-4 ('good keyword coverage; a few natural terms missing') and score-5 (synonyms/extensions) anchors, closer to 4.

Distinctiveness Conflict Risk

The niche is tightly pinned to ioredis Redis command generation ("RedisCommander typings", "tsd coverage", "@ioredis" implied via generator inputs), so it is clearly distinguishable from generic Redis, TypeScript, or testing skills with minimal conflict risk.