Requestly - Free API Testing & Mocking Tool

Open-Source API Client & HTTP Interceptor. API Collections, Environments, JS Redirects, API Mocks, Modify Headers and Insert Scripts
Requestly - Free API Testing & Mocking Tool is a powerful open-source extension for Edge that allows developers to easily test and mock APIs, modify HTTP requests, and insert scripts. Rated 5 stars by over 200,000 users, it simplifies workflow with features like custom API responses, redirections, and session recording. Ideal for debugging and enhancing collaboration, it serves as the best alternative to traditional tools like Charles Proxy and Fiddler.
Manifest V3
Rating:
4.10
(14)
Version:
24.11.25 (Last updated: 2025-02-03)
Creation date:
2022-01-18
Permissions:
  • contextMenus
  • declarativeNetRequest
  • proxy
  • scripting
  • storage
  • tabs
  • unlimitedStorage
  • webNavigation
  • webRequest
Host permissions:
  • <all_urls>
Size:
902.48K
Full description:
See detailed description
Updated:
19 hours ago

Other platforms

Requestly - Free API Testing & Mocking Tool (v24.11.25)
200,000+ 4.32 (1,233)

User reviews

Pros
  • Easy to use
  • Powerful features
  • Great for testing during development
  • Quick and friendly support
  • Useful for matching and replacing strings in URLs
Cons
  • Expensive for some users
  • Some users reported it not working
Most mentioned
  • Easy to use
  • Expensive
  • Powerful features
  • Testing during development
  • Strings in URLs
These summaries are automatically generated weekly using AI based on recent user reviews. User reviews may be inaccurate, spammy, or outdated.
User reviews
It's basically a paid app.
by ミルフイーユ, 2024-06-23

It was all good at the beginning then asking me to pay to continue using it, saying "PLAN EXPIRED Your Professional plan has expired.", asking me to pay $15/month. No, I m switching to ModHeaders.
by Kim,, 2024-05-21

$20 a month,much too expensive!
by 日贵, 2024-02-05
View all user reviews

Add-on safety

Risk impact

Requestly - Free API Testing & Mocking Tool requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
  • Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
  • High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
  • High ****** ********* ** * ****** ******** ******** ********** * ******* ******* *****
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
  • High ****** ******* *** ********* ********* ******** ***** *** ** ********** ****** * ******** ******* *****
  • Medium ****** ** ********* ****** ********* *** **** ****** **** **** ** ******* ** ********** **** ***********
Risk likelihood

Requestly - Free API Testing & Mocking Tool has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* ** * ******** ********* ** **** ****** *****
  • Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details

Promo images

Requestly - Free API Testing & Mocking Tool marquee promo image
Marquee promo image
Small promo image

Similar add-ons

Here are some Edge add-ons that are similar to Requestly - Free API Testing & Mocking Tool:

Requestly Intercept Modifier Requestly Intercept Modifier
江小壶
22 0.00 (0)
Request Interceptor Request Interceptor
Vinay Kaparthi
1K 4.80 (4)
ModResponse - Mock and replay API ModResponse - Mock and replay API
ModHeader
2K 5.00 (1)
tweak: mock and modify HTTP requests tweak: mock and modify HTTP requests
tweak-extension
2K 5.00 (1)
Mockman Mockman
metersun
36 0.00 (0)
Postman Interceptor Postman Interceptor
Postman
28K 4.00 (5)
API Tester - REST Client Testing Tool API Tester - REST Client Testing Tool
HongyuanCao
7K 1.80 (5)
Receptor Receptor
AkhileshM
37 0.00 (0)
Testfully Testfully
Testfully
131 0.00 (0)