Conciseness

The ~790-line body is noticeably verbose with several padded sections: the API header-comment template is repeated verbatim four times (step 1, multi-API example, 快速参考, 问题 1); the meta good/bad comparison appears twice (字段定义规范 and 问题 3); and the '常用 Zod 验证方法' section annotates basics Claude already knows ("z.string() // 字符串", ".min(2) // 最小长度", "z.number() // 数字"). Not score 1 because the material is not concept-explanation padding throughout — most sections convey project-specific rules; not score 3 because the repetition and the Zod primer alone represent well more than 'minor' trimming opportunities.

Actionability

Guidance is highly executable: exact file locations ("packages/global/openapi/[module]/[api].ts", "projects/app/src/pages/api/[path]/[route].ts"), copy-paste route templates with imports, a complete worked create-user example, and a structured review checklist. Not score 5 because the mandatory rule "实际存在的入参必须使用 parseApiInput 验证" references a helper that never appears in any code example (examples use GetAppChatLogsBodySchema.parse(req.body) instead), leaving a key detail unresolved.

Workflow Clarity

A clear four-step development sequence (define schema → implement route → auth → error handling) with 🔴 mandatory checkpoints, a blocking review checklist, and a data-cleaning section that mandates dry-run by default with explicit confirmation plus success/skip/failure stats — a real feedback loop for the riskiest batch operations. Not score 5 because there is no run-and-verify step after implementing a route (e.g., typecheck or test the endpoint) to close the loop.

Progressive Disclosure

The skill is a monolithic single file: no references/, scripts/, or assets/ exist, and ~790 lines of Zod API reference, tag catalogs, and worked examples that clearly belong in separate reference files are inlined. It also points to paths that are not part of the bundle ("/Volumes/code/fastgpt-pro/FastGPT/..." machine-specific paths and ".claude/skills/pr-review/..."). Not score 1 because the body has clear section headers and is navigable; not score 3 because essentially all detail content is inline rather than just some.

Specificity

The description lists four concrete, complementary actions — "使用 zod schema 定义入参和出参" (define input/output params with zod schemas), "在 API 文档中声明路由信息" (declare route info), "编写对应的 OpenAPI 文档" (write OpenAPI docs), and "在 API 路由中使用 schema.parse 进行验证" (validate with schema.parse) — comprehensively covering the skill's mandate. It is not score 4 because coverage is complete rather than having minor gaps; not below because every action is specific and implementable.

Completeness

The "what" is clear (zod schema definitions, route declarations, OpenAPI docs, schema.parse validation), but there is no "Use when..." clause or equivalent trigger guidance anywhere in the description. Per the judging guidelines, a missing explicit trigger clause caps completeness at 3; it is not score 4 because 'when' is entirely absent rather than merely imprecise.

Trigger Term Quality

Strong domain keywords users would naturally say: "FastGPT API 开发" (FastGPT API development), "zod schema", "OpenAPI 文档", "schema.parse", "API 路由". Not score 5 because common variations are missing — no mention of API 审查/review, 接口 (interface), TypeScript types, or when-to-use phrasing that a user might naturally say.

Distinctiveness Conflict Risk

"FastGPT API 开发规范" carves out a clear project-specific niche (FastGPT, zod, OpenAPI) with trigger terms that would not plausibly fire a generic skill. It is not score 4 because there is no meaningful overlap with adjacent skills — the FastGPT + zod + OpenAPI combination is highly distinctive.