Can I send POST requests with a JSON body?

Yes. Select POST method, set the Content-Type header to application/json, and enter your JSON payload in the body field.

Does it handle authentication?

You can add Authorization headers manually (Bearer token, Basic auth, API keys). The tool sends them with your request.

Will CORS block my requests?

Some APIs may block browser-based requests due to CORS policy. APIs that allow cross-origin requests (like jsonplaceholder.typicode.com) work directly.

Is my request data logged?

No. Requests are made directly from your browser to the target API. Nothing is routed through or logged on our servers.

REST API Tester

Test REST API endpoints with GET, POST, PUT, DELETE methods. View response headers, status, and body.

api testerrest apihttp clientpostman alternative

Common Use Cases

debugging small payloads and snippets
formatting code or data for readability
running fast checks without a full project setup

What is REST API Tester?

The REST API Tester is a browser-based HTTP client for testing API endpoints without installing software like Postman or Insomnia. It supports GET, POST, PUT, PATCH, and DELETE methods with custom headers and request bodies. View response status codes, headers, and formatted response bodies. Perfect for quick API debugging, webhook testing, and endpoint verification.

How to Use This Tool

1Enter the API endpoint URL
2Select HTTP method and add headers/body if needed
3Send request and view response status, headers, and body

Example

Input

GET https://jsonplaceholder.typicode.com/posts/1

Output

200 OK | JSON response body

Before You Rely on This Result

UtilityNest keeps this tool simple on purpose: the goal is to make the task easy to understand, fast to complete, and straightforward to double-check.

Review the inputs once more before you copy, save, or share the result.
Use the example and FAQ on this page to sense-check how the tool behaves.
When the result matters, compare one more scenario or related tool before acting on it.

Frequently Asked Questions

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