A REST client and API tester that opens in a full browser tab. Build a request, press Send, read the response — and nothing is lost when you click away. No desktop app to install, no account to create, no cloud sync you didn’t ask for. Every feature is free.

Build and send

  • Any HTTP request — GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS, to any API, without CORS in the way
  • Request tabs that keep your work — drafts are saved as you type and survive a reload
  • Every body type — JSON, URL-encoded form, multipart with file uploads, raw text, binary file, GraphQL
  • Authentication — Bearer token, Basic, API key (header or query), and OAuth 2.0 client credentials

Read responses clearly

  • Status, timing and size; pretty JSON with a collapsible tree and find-in-body
  • Image and sandboxed HTML preview; hex view and download for binary
  • Server-Sent Events shown live as they arrive

Test, chain and run

  • Tests without scripts — check status, headers, JSON paths, body text and response time on every response
  • Request chaining — copy a token or id from one response into {{variables}} for the next request
  • Collection runner — run a collection or folder in order, see pass/fail per request, re-run only the failures

Stay organized

  • Collections with folders, history grouped by day, and environments for dev, staging and production with secret values masked
  • Import a cURL command, an OpenAPI 3 / Swagger 2 spec, a Postman v2.1 collection or environment, or a HAR file
  • Export collections to Postman v2.1, and code snippets for cURL, JavaScript fetch, Node.js axios, Python requests, Go, PHP, C# and HTTPie
  • Keyboard first: Cmd/Ctrl+Enter sends, Cmd/Ctrl+S saves, ? lists every shortcut. Light and dark themes.

Private by design

No account, no sign-in and no pairing with a desktop app — ever. No tracking and no analytics. Your requests, tokens, collections and history are stored only in your browser, and requests go straight from your browser to the API you choose. See the privacy policy for exactly what each permission is used for.

Also from Brightbar

  • Brightbar JSON Viewer — Auto-format JSON responses in any tab. Great alongside API Client for inspecting endpoints.
  • Brightbar DevTools — CSS inspector, measurements, accessibility audit and more for frontend debugging.
  • Cookie DevTools — Manage cookies while testing APIs. Export to curl headers for authenticated requests.