API Client
A modern, open-source API client built on the OpenAPI standard. Send requests, organize collections, and test your APIs from a beautiful, offline-first interface available on every platform.
Get Started
Download the app for your platform, or jump straight into the browser version.
Open API Client
Install the desktop app for macOS, Windows, or Linux, or open the browser version if you want to try it instantly.
Send your first request
Enter a URL, choose an HTTP method, and click Send to inspect the response right away.
Import your OpenAPI description
Drag and drop an OpenAPI file to generate a complete collection with requests, authentication, and documentation.
Keep everything in sync
When your OpenAPI document changes on disk, API Client can watch for updates and automatically sync your requests and collections.
Add response tests
Use post-response scripts to validate responses and automate checks while you explore your API.
Features
What are you waiting for?
We're committed to enabling developers and companies to practice the highest of API industry standards.
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