API Tester - REST API Tester Client FREE

Name: API Tester - REST API Tester Client FREE
Rating: 5 (1 reviews)
Author: 99extensions

Develop, test and debug REST APIs.

As of May 2026, API Tester - REST API Tester Client FREE has 1,000 users and a 5.00/5 rating from 1 reviews in the Developer Tools category.

99extensions Developer Tools

Chrome Web Store ↗.crx

Users0%

1.0K

1,000

Rating0%

5.00

1 reviews

Reviews0%

Version

1.0.1

Manifest V3

Permissions & access

Permissions: storage
Host access: None declared

Screenshots

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API Tester - REST API Tester Client FREE screenshot 2

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API Tester - REST API Tester Client FREE screenshot 5

About

Welcome to API Tester - REST API Tester Client FREE a tool for developing, testing and debugging REST APIs.


#1 The API Tester includes the following main functionality:

1. Send requests and display responses
API Tester - REST API Tester Client FREE can handle GET, PUT, PATCH, DELETE, HEAD, OPTIONS and Custom requests. In addition custom headers and basic authentication can be added to the requests.

2. Manage favorites
To make debugging life easier, the API Tester allows to store and manage favorite requests. These favorites can also be imported and exported.

3. Request history
By default all requests are stored within the request history. Please rest assured that the API Tester will not store any requests made from an incognito window.


#2 FAQs:

1. Which permissions are needed to use our API Tester - REST API Tester Client FREE extension?
Only storage permissions are needed, these permissions are then used to store favorite and historic requests.

2. Where do I get help?
The API Tester extension has a dedicated Help section which describes the most important functionality.