API Request Playground
Send an HTTP request and explore the JSON response in an interactive tree. Runs entirely in your browser — nothing is proxied or logged.
What is the API Request Playground?
A lightweight, in-browser HTTP client — like a mini Postman. Pick a method, enter a URL, add any headers and a request body, and hit Send. The response comes back with its status code, round-trip time, and size, and any JSON payload is rendered as an interactive, collapsible tree you can search and copy paths from. Every request is made directly from your browser; JSONKit never proxies, stores, or logs it.
Equivalent curl command
# The playground runs this in your browser, the same way curl would:
curl -X POST https://api.example.com/users \
-H "Content-Type: application/json" \
-H "Authorization: Bearer <token>" \
-d '{ "name": "Ada", "role": "admin" }'A note on CORS
Because requests run in your browser, they are subject to the same CORS rules as any web page. APIs that send an Access-Control-Allow-Origin header (most public APIs) work out of the box. APIs that don't allow cross-origin browser requests will fail with a CORS error — that's a restriction set by the API, not by JSONKit. For those, test the endpoint from a server or a desktop HTTP client.
Where This Playground Helps
- ▸Exploring a new API — Try endpoints from documentation without installing Postman or writing a script, and see the exact response shape immediately.
- ▸Debugging an integration — Reproduce a failing request with the exact headers and body your code sends, isolating whether the bug is in the request or your app's handling of the response.
- ▸Checking auth headers quickly — Confirm a Bearer token or API key actually works against an endpoint before wiring it into application code.
- ▸Inspecting a large JSON response — Browse a deeply nested response as a collapsible tree instead of scrolling through raw formatted text.