Mock API Response Generator
Craft canned API responses with status codes, headers, and bodies for testing error paths. Simulate 404s and 500s without a server — local, free, no signup.
How to Use the Mock API Response Generator
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Look up HTTP status codes by number — view description, label, and response class (informational, success, redirect, client error, server error).
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Frequently Asked Questions
How do I test error handling?
Generate 404, 429, and 500 responses with realistic bodies: point your client at the mock shape and verify retries, toasts, and fallbacks trigger correctly.
Custom headers included?
Yes — rate-limit headers (X-RateLimit-Remaining), pagination links, and content types generate alongside bodies for faithful client tests.
Mock vs live testing?
Mocks cover shape and status handling fast; run live integration before release for auth, latency, and real error text. Both layers, in that order.
Do mock responses upload anywhere?
No — generation runs locally in your browser. Nothing leaves your device.
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Last updated October 2026