Try 3 AI generations free — no account required
Describe the API you need.
We build the request.
Type what you want in plain English. APIBuilderHQ generates the method, URL, headers, and body instantly — then you send it. No download. No login. No bloat.
Start Building Free →3 free AI generations included · Pro unlocks unlimited for $12/mo or $99/yr
Prompt to Production in < 3 Seconds
Natural language collapses into a production-grade request in one shot — generation that finishes before your train of thought does.
Everything you need. Nothing you don't.
Zero Login. Local Storage Only.
We don't want your API keys. No central database, no account required. Your keys and environments stay strictly in your browser's localStorage.
Generate Requests from Plain English
Describe what you need — 'Stripe POST to create a customer'. The AI instantly builds the production-ready method, URL, headers, and body.
Auto-Detected Environments
The builder automatically detects {{VAR}} patterns in your URLs, headers, and payloads, surfacing them instantly for inline editing.
Send to Any API, Instantly
Browser CORS restrictions are bypassed via a stateless server-side proxy. Send requests to any API on the planet directly from your browser. Zero logging.
Explain This Error
Hit a 400 or 401? Click one button. The AI reads your failing request and the response, then tells you exactly what went wrong and how to fix it.
Built for Speed
Cmd+K to focus the AI prompt. Cmd+Enter to fire the request. Export to cURL, Fetch, or Python with one click. Never touch your mouse.
Common Questions
Does your proxy see my API keys?
No. API keys stay in your browser's localStorage and are substituted into requests client-side before reaching our proxy. The proxy only sees the outbound request - never your raw keys stored in the browser.
How do you enforce the free tier without an account?
We use a privacy-preserving fingerprint derived from your IP address and browser headers - no cookies, no tracking pixels, no persistent identifiers stored on our end.
What happens to my collections if you shut down?
Your collections live entirely in your browser's localStorage. We have no copy. You can export them anytime. If we disappeared tomorrow, your data would still be there.
Why should I trust a proxy I can't inspect?
Fair question. Our proxy route is open - it accepts a URL, method, headers, and body, forwards the request, and returns the response. No transformation, no logging, no storage. You can verify this by checking our network tab - the only outbound call is to /api/proxy, which immediately forwards to your target URL.
Ready to build faster?
No account. No download. Start testing APIs in seconds.
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