ZwaggenTyped API specs, runtime-tested.

Postman + Swagger + Zod in one browser app.

Run it now

npx @zwaggen/web

Requires Node 20+

Typed API spec

Build and version a single spec file covering types, endpoints, and environments.

Every response is validated against your spec as you test.

Run full suites, chain responses across requests, compare spec revisions side by side.

A native app for editing specs and running requests against any API without CORS limits. See the desktop page for details.