API Tester
Send HTTP requests, keep them in collections, switch environments — a self-hosted alternative to Postman.
What it is
A browser-based tool for calling REST APIs: build a request, send it, read the response, and keep it for next time. If you've used Postman or Insomnia you'll feel at home, without the account, the desktop app or the subscription.
What you can do
- Build GET, POST, PUT, PATCH and DELETE requests with headers, query parameters and a JSON, form or raw body.
- Send them and see the status, timing, response headers and a formatted body.
- Save requests into collections and organise them by project or service.
- Define environments (dev, staging, live) with variables such as base URLs and tokens, then switch with one click.
- Keep a history of everything you sent, and clear it when you want.
- Import and export collections and environments as JSON to share with colleagues or back them up.
Who it's for
Developers and testers who want a quick, private place to poke at an API. Because it runs on this platform rather than your laptop, your collections follow you between machines.
Getting access
Create a free account and add API Tester from your dashboard. It's available straight away.
Your data
Collections, environments and history are private to your account. Your data is stored on servers in the EU, never sold or shared, and you can ask for it to be deleted at any time. See the privacy policy.