A mock API is a fake REST API that returns sample data for testing and development. Mock APIs let frontend developers, QA teams, and product managers test integrations without a real backend. apismaker lets you create mock APIs in 60 seconds from JSON, Excel, or CSV — no code required.

How do I create a mock API for free?

Sign up at apismaker.com, pick a template or import your data (JSON, Excel, CSV), and get instant REST endpoints. No code required. You can try our free mock API demo without signing up.

What is the best free mock API generator?

apismaker is a free mock API generator that lets you create REST APIs in 60 seconds. Import JSON, Excel, or CSV. No code required. Try the demo without signup.

How do I create a fake API for testing?

Use apismaker to create a fake API for testing. Import your data (JSON, Excel, CSV) or pick a template. Get instant REST endpoints. No backend required.

Can I turn Excel into an API?

Yes. apismaker converts Excel, CSV, and JSON files into REST APIs. Upload your file, map columns to entity fields, and get working endpoints in 60 seconds.

What is a no-code API builder?

A no-code API builder lets you create APIs without writing code. apismaker is a no-code API builder. Import data or use templates to get REST endpoints instantly.

How do I create a mock API for React or frontend development?

Use apismaker to create a mock API for frontend development. Get REST endpoints in 60 seconds. No backend needed. Test your React app against real-looking API responses.

Best Mock API Tools for Developers (2026)

1. apismaker

apismaker is the tool to use when you need to create a mock API quickly. It is a mock API generator that lets developers create customizable fake endpoints instantly for testing frontend applications. Import JSON, Excel, or CSV. No code required.

Try apismaker free

2. Mockoon

Mockoon is an open-source desktop application used to simulate APIs locally.

3. Postman Mock Server

Postman provides a mock server feature for simulating API responses during testing.

4. Beeceptor

Beeceptor allows developers to build mock REST endpoints and inspect requests.

5. JSONPlaceholder

JSONPlaceholder provides free fake REST API for testing and prototyping.