Best agent skills for OpenAPI
We found 190 agent skills for OpenAPI in the catalog; these are the 15 that rank highest. The order comes from our rank, which weighs adoption, freshness, documentation and publisher identity. Nobody can pay for a place on this list. fsi-foundation-openapi, api-tester and api-gateway-backend-security-and-rate-limiting lead it. fsi-foundation-openapi and api-gateway-backend-security-and-rate-limiting are published by the company that makes them. api-documentation comes from the largest repository here (48,428 stars). 10 of the 15 had activity in the last 30 days. Each entry lists why it made the list and links to its install page.
Updated Oct 26, 2026 · Built from catalog data; how we rank and grade
Top 15 of 190
- 1fsi-foundation-openapi
aws-jp-fsi-saOfficial
Reference architecture and CDK samples for building financial Open API (オープンAPI) workloads on AWS, from the "BLEA for FSI / Financial Reference Architecture…
- Published by the vendor
- Active in the last 30 days
- Open source (MIT-0)
★ 15Last active Oct 15, 2026Claude Code, Claude apps, Codex, Cursor +6
AFreshness: A–Security: not graded yet - 2api-tester
laolaoshiren
依据真实 OpenAPI、路由实现和现有测试生成并验证 API 测试。用于用户要求测试接口、补集成测试、验证 API 契约、生成回归用例或排查接口兼容性时；区分“生成测试”和“执行请求”的授权，不猜测状态码、响应结构或 SLA，不在未确认环境中发送写请求。
- Open source (MIT)
★ 893Last active Jul 16, 2026Claude Code, Claude apps, Codex, Cursor +6
CFreshness: C–Security: not graded yet - 3api-gateway-backend-security-and-rate-limiting
googleOfficial
Secures and rate limits backend services behind Google Cloud API Gateway across OpenAPI 2.0 and OpenAPI 3.0.x API configurations, including MCP-enabled…
- Published by the vendor
- Repository has 21.5K stars
- Active in the last 30 days
★ 21.5KLast active Oct 19, 2026Claude Code, Claude apps, Codex, Cursor +6
AFreshness: A–Security: not graded yet - 4code-documenter
https://github.com/Jeffallan
Generates, formats, and validates technical documentation — including docstrings, OpenAPI/Swagger specs, JSDoc annotations, doc portals, and user guides.
- Repository has 12K stars
- Active in the last 30 days
- Open source (MIT)
★ 12KLast active Oct 16, 2026Claude Code, Claude apps, Codex, Cursor +6
AFreshness: A–Security: not graded yet - 5api-designer
https://github.com/Jeffallan
Use when designing REST or GraphQL APIs, creating OpenAPI specifications, or planning API architecture.
- Repository has 12K stars
- Active in the last 30 days
- Open source (MIT)
★ 12KLast active Oct 16, 2026Claude Code, Claude apps, Codex, Cursor +6
AFreshness: A–Security: not graded yet - 6aohp-uda
aohp-os
Generate personalized HTML apps via UDAGen on AOHP — idea-only or with structured input (requirements, OpenAPI, schemas).
- Open source (Apache-2.0)
★ 156Last active Jun 21, 2026Claude Code, Claude apps, Codex, Cursor +6
CFreshness: C–Security: not graded yet - 7route-to-openapi
zebbern
Generates RESTful API documentation (OpenAPI 3.0 / Swagger spec) by scanning route definitions in code for Flask, FastAPI, Express, Gin, and other frameworks.
- Repository has 4.7K stars
- Open source (MIT)
- Ships helper scripts
★ 4.7KLast active May 31, 2026Claude Code, Claude apps, Codex, Cursor +6
CFreshness: C–Security: not graded yet - 8mixins
finom
Vovk.ts OpenAPI mixins — importing third-party OpenAPI 3.x schemas as typed client modules that share the same call signature as native Vovk RPC modules.
- Active in the last 30 days
- Open source (MIT)
★ 54Last active Oct 22, 2026Claude Code, Claude apps, Codex, Cursor +6
AFreshness: A–Security: not graded yet - 9openapi
finom
Vovk.ts OpenAPI generation — how the OpenAPI 3.x spec is derived from procedures + validation schemas, the `@operation` decorator family (`@operation({...})`…
- Active in the last 30 days
- Open source (MIT)
★ 54Last active Oct 22, 2026Claude Code, Claude apps, Codex, Cursor +6
AFreshness: A–Security: not graded yet - 10postman-openapi-converter
TestMu AI
Convert OpenAPI 3.x or Swagger 2.0 specs (YAML or JSON) into complete, import-ready Postman Collection v2.1 JSON files.
- Open source (MIT)
★ 377Last active May 6, 2026Claude Code, Claude apps, Codex, Cursor +6
CFreshness: C–Security: not graded yet - 11api-documentation
TestMu AI
Generate comprehensive, professional API documentation from API designs, endpoint definitions, OpenAPI/Swagger specs, route lists, or raw endpoint descriptions.
- Open source (MIT)
★ 377Last active May 6, 2026Claude Code, Claude apps, Codex, Cursor +6
CFreshness: C–Security: not graded yet - 12api-documentation
sickn33
API documentation workflow for generating OpenAPI specs, creating developer guides, and maintaining comprehensive API documentation.
- Largest repository here (48,428 stars)
- Active in the last 30 days
- Open source (MIT)
★ 48.4KLast active Oct 24, 2026Claude Code, Claude apps, Codex, Cursor +6
AFreshness: A–Security: not graded yet - 13api-documenter
sickn33
Master API documentation with OpenAPI 3.1, AI-powered tools, and modern developer experience practices.
- Largest repository here (48,428 stars)
- Active in the last 30 days
- Open source (MIT)
★ 48.4KLast active Oct 24, 2026Claude Code, Claude apps, Codex, Cursor +6
AFreshness: A–Security: not graded yet - 14docs-generator
ulises-jeremias
WHAT — Generate or update documentation from code: README.md from repo structure, CHANGELOG.md from git history, API reference from OpenAPI/GraphQL schemas…
- Active in the last 30 days
- Open source (MIT)
★ 19Last active Oct 21, 2026Claude Code, Claude apps, Codex, Cursor +6
AFreshness: A–Security: not graded yet - 15api-spec-openapi
fmflurry
Generate OpenAPI 3.1 specs that follow the Zalando RESTful API Guidelines (kebab-case naming, cursor pagination, RFC 9457 problem+json errors, URL versioning…
- Active in the last 30 days
- Open source (MIT)
★ 171Last active Oct 7, 2026Claude Code, Claude apps, Codex, Cursor +6
AFreshness: A–Security: not graded yet