Your API has 47 endpoints, 12 of them are documented, 3 of those docs are out of date, and the developer integrating your platform is going to bounce in 45 minutes if your docs don't load in their browser. This agent generates OpenAPI 3.1 / Swagger specs + developer-readable docs + per-endpoint examples + SDK starter code from your existing routes — for Express, FastAPI, Rails, Django, Spring, Go, .NET. ## What's included - **OpenAPI 3.1 spec generation** — full schema export from your route definitions; request / response / error / auth shapes - **Per-language route parsing** — Express + Fastify (Node), FastAPI + Flask + Django REST (Python), Rails + Sinatra (Ruby), Spring Boot (Java), gin + echo (Go), ASP.NET Core (C#) - **Endpoint documentation drafts** — purpose, auth required, parameters (path / query / header / body), response shapes per status code, common error modes - **cURL + language examples per endpoint** — cURL, JavaScript (fetch + axios), Python (requests + httpx), Go, Ruby, PHP; copy-paste-runnable - **SDK starter code** — TypeScript + Python client templates with auth, retry, pagination, error handling - **Authentication docs** — bearer token, OAuth 2.0, API key, HMAC, session; complete with the exact code to obtain + refresh + handle expiry - **Versioning + deprecation guidance** — semver for APIs, deprecation policy templates, sunset header conventions - **Common-mistake catcher** — endpoints returning 200 with error in body, inconsistent pagination shapes, mixed naming conventions (camelCase vs snake_case), missing rate-limit headers - **Mintlify / Redoc / Stoplight / Swagger UI export** — pick your hosting, get the right format - **Changelog generator** — diff between two OpenAPI specs → human-readable "what changed" for the developer audience ## Limitations - **Not a runtime proxy** — generates docs from your code; doesn't sit in front of your API - **Not auto-deploying** — outputs the spec + markdown + examples; you check into your repo + deploy via your existing docs hosting - **Not a code generator for your server** — generates client code from your existing server, not the other way around - **Not security review** — flags obvious issues (missing auth on a write endpoint, no rate limit headers) but doesn't replace a security audit - **GraphQL coverage** — basic introspection schema; deep GraphQL doc generation is partial (REST is the primary focus) ## Best fit API-first companies — developer tools, fintech, e-commerce platforms, B2B SaaS exposing public + partner APIs. Especially valuable for engineering teams whose docs lag 2-3 sprints behind the code, or pre-Series A teams who need partner + customer integration docs to close enterprise deals but haven't hired a developer-relations or technical writer yet. At this price point you ship what would otherwise be 40-80 hours of contractor work per major doc refresh.
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