API Client

The API Client rail is an HTTP request workspace: method, URL, query params, headers, body, and a response panel (body, headers, tabs).

Workflow

1. Open the API Client section from the sidebar.
2. Create tabs for separate requests; use Collections to save and reopen drafts.
3. Compose JSON, form, or raw bodies; enable/disable header rows with checkboxes.
4. Send executes the request. On macOS, sends may run via the system curl binary so TLS behavior matches CLI tools and system trust stores.
5. Use Import to paste a cURL command into a tab.

Open in API Client

From a captured row in the traffic list, you can open the request in the API Client to edit and replay it (headers and body are prefilled when available).

Limitations

See Known limitations for body size caps, timeout behavior, and differences vs browser DevTools.