API Response Mocker
Create mock JSON API responses for testing — with templates, status codes, and validation.
🔒 No uploads⚡ Instant🆓 Free
✅ Valid JSON
{
"id": 1,
"name": "John Doe",
"email": "[email protected]",
"role": "admin",
"avatar": "https://api.dicebear.com/7.x/avataaars/svg?seed=John",
"createdAt": "2024-01-15T10:30:00Z"
}curl -X GET "https://httpbin.org/status/200" \ -H "Content-Type: application/json"
How It Works
1
Choose a response template or write your own JSON.
2
Set the HTTP status code and optional delay.
3
Copy the response JSON for use in your tests or mock server.
Features
✓Pre-built templates (user, product, error, auth, paginated)
✓HTTP status code selection
✓Real-time JSON validation
✓Formatted JSON preview
✓Sample cURL command generation
✓100% browser-based
Frequently Asked Questions
What is API mocking?▼
API mocking is creating fake API responses for testing frontend applications without needing a real backend server.
Can I use these responses in my tests?▼
Yes! Copy the JSON and use it as fixture data in your unit tests, integration tests, or mock servers.
Does this create a real API endpoint?▼
No. This tool helps you design and preview mock responses. For actual mock endpoints, use tools like json-server or MSW.
Related Tools
🔐
Password Generator
Generate strong, secure random passwords with custom length and character options.
🆔
UUID Generator
Generate universally unique identifiers (UUID v4) instantly.
🔁
Base64 Encoder
Encode and decode text to/from Base64 format instantly in your browser.
#️⃣
SHA256 Generator
Generate SHA-256 hash for any text input using the Web Crypto API.