OpenReq

Build, test, and debug your APIs with a self-hosted tool that does what you actually need. Scripts, environments, OAuth 2.0, code generation, and an AI wizard that builds collections from your docs — no account required, no limits.

Python scripting engine. Write pre-request scripts to prepare your API calls and post-response tests to validate everything. Full Python syntax with a req API.

Paste docs. Get a full collection. Don't manually create requests one by one. Drop in your API documentation — or just a URL — and the AI wizard generates an entire collection: endpoints, methods, headers, request bodies. All of it. You pick what to import.

Drag. Connect. Run your test flow. Build complex API test workflows on a visual canvas. Drag nodes from the palette, connect them with edges, set conditions and assertions — then hit Run and watch your flow execute in real-time with animated edges and per-node results.