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API Playground

Pick any API, paste your X-API-Key, tweak the body and fire a real request — everything happens in your browser.

All APIs
Random User-Agent Generator →

Batch generate valid User-Agent strings for mainstream browsers. Customize by browser (Chrome/Firefox/Safari/Edge/Opera), operating system (Windows/macOS/Linux/Android/iOS), and device type (desktop/mobile/tablet). Generate up to 100 strings at a time.

Try it out

Paste your X-API-Key, tweak the body, and fire a real request. Great for integration & regression checks.

POSThttps://openapi.toolkk.com/v1/random-useragent-generate

Without an API key the request will go out anonymously and may be rejected by the gateway.

// Response will appear here after you send the request