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.
Features
Work locally with requests and collections without waiting on cloud sync.
Generate collections from OpenAPI descriptions and keep them close to your source of truth.
Use API Client in the browser or on macOS, Windows, and Linux.
Manage variables for local, staging, and production without duplicating requests.
Automate setup and validate responses with request scripts and test assertions.
Build on open standards with an open-source client that keeps your API work portable.
Ready to send your first request?
Start in the browser or download the desktop app for your platform, then follow the Getting Started guide.
