Describe an endpoint. Get a live URL, realistic LLM-generated data, and JSON Schema validation — in under 30 seconds. No config files. No local servers.
No YAML. No local servers. No Faker.js syntax to memorize. Just describe what you need.
Type a natural-language description like "a user with email, role, and subscription tier" — or use the visual schema builder to define fields, types and constraints.
Our AI creates contextually coherent, realistic mock data — names match emails, dates make sense, relationships hold. No random Bernice@john.doe.com nonsense.
You get a shareable HTTPS endpoint and the matching JSON Schema for backend validation — ready to use in your frontend, Postman, or CI pipeline immediately.
Forget Faker.js templates. Our AI understands semantic context — it generates data that makes sense together, like a real database would produce.
Every endpoint automatically ships with a battle-ready JSON Schema. Paste it into your backend validator in one click — no manual spec writing.
Not a LLM fan? Use the drag-and-drop field editor to define types, constraints, and enums. Perfect for teams who prefer explicit control.
Every mock lives at a stable api.mockinator.io URL. Share with teammates, QA, or external contractors without running anything locally.
No CLI. No Docker. No local port conflicts. Mockinator runs entirely in the browser — create your first mock in under 30 seconds.
Live request logs with headers, query params, and body — so you can debug exactly how your frontend is talking to the mock, in real time.
The tools engineers actually use, honestly compared on the things that matter for daily development work.
| Capability | ★ Mockinator | Beeceptor | Mockoon | Postman | WireMock | Prism/Stoplight |
|---|---|---|---|---|---|---|
| LLM-generated coherent data | ✓ Native | partial | ✗ | ✗ | ✗ | ✗ |
| JSON Schema validation (built-in) | ✓ 1-click | ✗ | partial | partial | ✗ | ✓ OpenAPI only |
| No local install required | ✓ | ✓ | ✗ Desktop app | ✓ | ✗ Java / Docker | CLI |
| Natural language → endpoint | ✓ | partial | ✗ | ✗ | ✗ | ✗ |
| Visual schema builder | ✓ | ✓ | ✓ | partial | ✗ | ✓ |
| Shareable cloud endpoints | ✓ Free tier | ✓ | Paid only | Limited | Paid Cloud | Paid only |
| Transparent pricing | ✓ | per endpoint | ✓ | ✓ | ✗ Enterprise | ✓ |
| Setup time to first mock | < 30 seconds | ~2 min | ~5 min | ~5 min | ~30 min | ~10 min |
Start free. Scale when you need to. No per-endpoint gotchas, no surprise overage bills.
For solo engineers and side projects.
For teams shipping fast, every sprint.
For orgs with security, scale, and SLA needs.
Join thousands of engineers who've stopped wasting time on config files.
No credit card. No install. Cancel whenever.