API Tools

Build cURL commands visually — set method, headers, auth, body, and options with a live cURL output.

Make HTTP requests directly from your browser — set method, URL, headers, and body, then inspect the response.

Build and visualize raw HTTP requests — see exactly what your request looks like on the wire.

Create and sign JWT tokens — set header, payload, and secret to generate a valid token.

Edit and validate OpenAPI specs with a live path/method summary and prettify tool.

Visually build GraphQL types, queries, and mutations into valid SDL output.

Convert Protocol Buffer .proto message and enum definitions into TypeScript interfaces.

Build a Postman Collection v2.1 JSON export with requests, headers, and folders.

Compare two JSON API responses side by side and see exactly which fields changed.

Visually build an HTTP request — method, headers, body — and see the real response using your browser's fetch().

Paste a curl command and get equivalent JavaScript (fetch), Python (requests), and Node.js (https) code.

Generate realistic sample JSON payloads for GitHub, Stripe, Slack, and generic webhooks to test your receiver endpoint without waiting for a real event.