API Tester - REST HTTP Client

API Tester is the first mobile app to test any type of API on the go. Including REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, HTTPS.

Main features:
- All types of HTTP requests: GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS, COPY, LINK, UNLINK, PURGE, LOCK, UNLOCK, PROPFIND, VIEW.
- Powerful GraphQL editor with full-scale experience: body editor with Queries, Mutations, Subscriptions and syntax support; variables editor; documentation explorer; request settings and metadata.
- WebSocket testing tool. Handles connection and message exchange via WS or WSS.
- API calls with any kind of request data encoding and transfer type (query params, URLEncoded params, FormData, raw data, send files from device storage, cloud, remote server).
- Settings. TLS can be skipped, redirects can be disabled, timeouts are adjustable. Weak SSL verification can be enabled and replaced with self-signed certificate.
- Import request or collection by curl, link or file from your device. And naturally, there is any type of collection for you: Swagger, OpenAPI, Postman, YAML.
- Need to share request in seconds? One tap and done. Deep link and cURL command supported.
- Integrations: Shortcuts, Widgets, Apple Watch app.

Additional little things:
- Autocomplete for most common headers keys.
- Syntax highlighting; Auto formatting.
- Optimized for viewing on any device screen.
- Cookies. Collect, edit, create.
- Request metrics. Measure request duration, response size, status code changing.
- History of all request calls.
- Request authorisation. Basic Auth with password and username. OAuth with header or query access token.