Backend not ready?
Mock it in seconds.
Stop waiting for API endpoints. Define schemas, set delays, and get instant mock responses for your frontend development.
No credit card or login required
Everything you need to mock a real backend
Mock66 isn't just a static JSON server. It's a dynamic simulation engine designed to replicate real-world API behaviors.
Dynamic Reusable Schemas
Define complex and reusable JSON schemas and let us generate realistic random data for every request automatically.
Conditional Schemas
Create smart schemas that adapt their response structure based on specific request parameters, headers, or body content.
Reusable JSON Objects
Create and manage reusable JSON snippets (like 'User' or 'Address') to maintain consistency across multiple endpoints.
Simulate Latency
Test how your UI handles loading states and skeletons by adding custom network delays (ms) to any specific endpoint.
Project Isolation
Keep your mocks organized and secure. Create separate projects with unique API keys for different apps or environments.
Developer First
Built with a RESTful mindset. Customize status codes (200, 404, 500), headers, and HTTP methods with zero friction.
Why use a Mock Backend?
Mock66 solves the "waiting for backend" problem. Here is how it fits seamlessly into your development lifecycle.
Frontend-First Development
Don't wait for the backend team. Define your API contract in Mock66, generate a realistic endpoint instantly, and start building your UI today.
Simulate Edge Cases
Hard to reproduce a 500 error or a 5-second timeout? Mock66 lets you toggle status codes and delays instantly to test your app's resilience.
Instant Prototypes
Need to demo a feature but the DB isn't ready? Import a JSON sample, tweak the schema, and serve a live API in less than 30 seconds.
Dynamic Data Generation
Stop using 'Lorem Ipsum'. Our generators populate endpoints with real-looking names, emails, and dates that change on every request.
Simple pricing for powerful mocks
Start free, upgrade when you need more calls or team features. No hidden fees.
FREE
Perfect for side projects and learning.
- 1 Project
- 2 Endpoints per project
- 50 API calls / day / project
- Basic Mock Responses
- Custom Status Codes
- Dynamic Schema Generation
- Custom Delays
- Team Collaboration
Pro
Most popularFor professional developers and freelancers.
Billed monthly
VAT included
- 10 Projects
- Unlimited Endpoints
- 30 000 API calls / month / project
- Advanced Mock Responses
- Dynamic Schema Generation
- Custom Delays
- Custom Status Codes
- Team Collaboration (Up to 5 members)
The Maker
"Always Building,
Always Learning."
From the first line of code to leading the tech vision at Mock66, my journey has been defined by curiosity.
I leverage the latest tech to build powerful SaaS tools, but my favorite role is simply being a helpful member of the developer community. That's why I've created a Discord server to help others on their coding journey however I can.
