freecoding.school100% FREE · NO SIGNUP
Gateway RidgeISSUE #35 of 35

references · http spec · oauth rfcs · openapi spec

Gateway GusVSTimeout Titan
Gateway Gus saysYou’ve covered APIs end to end — now design and document one real, consistent API.

APIs click when you design one. The capstone: model a small domain as REST resources, write an OpenAPI spec, choose an auth scheme (bearer tokens), add pagination/filtering, define a consistent error shape, and pick caching + rate-limit rules. That proves you can ship an API others can build on. References: the HTTP RFCs, the OAuth 2.0 RFCs, the OpenAPI spec, and MDN's HTTP docs.

Power-ups you unlock

Timeout Titan attacks — common mistakes

Boss battleDesign a "bookmarks" API: resources, auth, pagination, and one error shape.

Example code

<!doctype html><html><head><meta charset="utf-8"></head>
<body style="background:#06040d;color:#e6e0ff;font-family:monospace;padding:20px"><pre>GET/POST /bookmarks   (Bearer auth, ?limit&amp;after)
DELETE   /bookmarks/{id}
error: { code, message, field }  (everywhere)</pre></body></html>
▶ Open the interactive comic issue
‹ Monetization · Plans · Quotas · Usage-Based