API Schema Mapper

API Schema Mapper API Schema Mapper passively captures real fetch/XHR requests triggered by the pages you visit and lets you export them with a single click in OpenAPI 3.0 and Postman Collection v2.1 formats. No Burp Suite or proxy configuration required — it runs entirely inside your browser. Features Automatic endpoint normalization — /user/123 → /user/{id} JSON schema extraction from request and response bodies Multi-host support — identifies and separates multiple APIs called by the same page GraphQL support — breaks down a single /graphql endpoint into its actual operations Authentication scheme detection — detects Bearer/JWT, cookies, and custom headers without storing the actual credential values JavaScript bundle scanning — discovers endpoints that haven't been triggered yet TR / EN / FR language support Privacy-first: All data stays in your browser. Nothing is sent to any external server.