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Your Entire API Workflow

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API Pilot gives your team a unified development toolkit to intercept, mock, test, and analyze APIs — right in your browser. Zero backend setup. Full privacy. Always yours.

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POST/api/v2/payments/charge
Headers
Authorization·Bearer sk_live_••••••
Content-Type·application/json
Body
{
"amount": 4999,
"currency": "usd"
}
200 OK
48msMocked
{
"status": "success",
"charge_id": "ch_3QxT…"
}
Request Intercepted
Rule Matched

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The Complete Suite.

Every tool you need to master your API workflow, available locally.

API Interceptor, Mocker and Tester
Extension

API Interceptor, Mocker and Tester

The all-in-one browser extension for developers. Intercept, mock, and test HTTP requests directly in your browser. Simulate network conditions, inject headers, and prototype APIs without backend code. Master your API workflow today.

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The Ultimate Tool for API Development

API Pilot Extension.

Intercept, mock, and debug APIs directly in your browser with our most powerful development toolkit.

Real-time Interception

Capture HTTP/HTTPS requests and responses in real-time. Analyze headers, payloads, and timing details instantly.

Instant Response Mocking

Mock API responses locally without backend changes. Test edge cases, error states, and loading conditions effortlessly.

Modify & Replay

Edit request headers, body, and query parameters on the fly. Replay failed requests to debug complex workflows.

100% Local Privacy

Your data never leaves your browser. All mocked data and captured requests are stored locally using IndexedDB.

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API Interceptor, Mocker and Tester

Details
  • Quick API Tester
  • Code Snippet Generation
  • Environment Variables
  • Export Interceptor Rules
  • Use Website's Cookies in API Test Calls
  • Max Interceptor Rules3
  • Max API Tester History20
  • Max Browsers1
  • Max Saved API Calls5

Frequently Asked Questions

API Pilot is a comprehensive suite of API development tools. Our flagship Browser Extension includes a powerful interceptor, response mocker, and quick-tester to help you master your API workflow directly in the browser.