EchoKit: API Recorder & Mocker
Record real API traffic once, then mock it reliably. No backend setup.
- Captures fetch and XHR traffic and replays it as local mocks, from the popup or a DevTools panel.
- Simulates latency, 4xx/5xx errors and blocked APIs; matches strictly, by wildcard, ignoring query strings, or by GraphQL operation.
- Exports to HAR and Postman. Pro adds unlimited recordings and GitHub Gist team sync (Pro features are free for now).