ModResponse - Mock and replay API

Mock, modify, and replay API. Easy setup. No proxy needed. No code change required.

ModResponse is a versatile Chrome extension designed for web developers to mock, modify, and replay HTTP API responses effortlessly. It eliminates the need for proxies or code changes, allowing seamless stubbing of responses, rerouting requests, simulating network delays, and handling HTTP error statuses for efficient debugging and testing.

Key features include recording and replaying API responses, stubbing responses with custom data, rerouting requests to other servers (including localhost), simulating slow networks and errors, and applying advanced filters by tab or window. ModResponse is ideal for creating perfect demo data, accelerating slow API tests, developing for edge cases or unimplemented APIs, and safely testing changes on production domains. Additional capabilities such as multiple profiles, dark mode, and easy profile sharing make it a comprehensive tool to enhance web development workflows without risking production stability.

By:
https://modheader.com
Users:
10,000+
Rating:
4.60
(25)
Version:
1.2.1 Last updated: 2023-09-01
Creation date:
2022-06-16
Risk:
High risk impact Very low risk likelihood
Permissions:
  • alarms
  • contextMenus
  • storage
  • activeTab
  • debugger
  • unlimitedStorage
Host permissions:
  • https://modheader.com/*
  • <all_urls>
Size:
464.90K
Email:
ad*****@modheader.com
URLs:
Website ,Privacy policy
Full description:
See detailed description ⏷
Source:
Chrome Web Store
Updated:
a day ago

Other platforms

ModResponse - Mock and replay API (v1.2.1)
1,468+ 5.00 (1)

User reviews

Users find ModResponse highly effective and reliable for mocking and rerouting API requests, particularly praising its CORS support, ease of use, and ability to redirect to local servers. However, several reviews point out a poor and sometimes confusing user interface, occasional issues with UI responsiveness especially on long URLs, and the absence of GraphQL support, which some users desire. Overall, it is valued for its functionality despite minor UI drawbacks.
Pros
  • Supports rerouting of CORS requests, which is beneficial for frontend developers.
  • Simple and useful with support for regular expressions enabling flexible request handling.
  • Reliable and works effectively for mocking and redirecting API calls.
  • Easy and fast to use for mocking APIs without modifying code.
  • Good integration for redirecting requests to local servers to test new features.
Cons
  • The user interface is poor and not very intuitive, causing confusion about its operations.
  • Some UI elements can be unsynchronized or may not pop up as expected, especially with long URLs.
  • Limited functionality regarding GraphQL operations and mutations support (requested feature).
Recent reviews
Its awesome plugin for frontend developers, It supports rerouting the CORS requests
by Nithi Dhanasekaran, 2025-04-30

Simple and useful, especially as it supports regexp.
by HALOZY SUN, 2025-03-19

Hmm, did the trick
by 仌 POURYA, 2025-02-19
View all user reviews ›

Extension safety

Risk impact

ModResponse - Mock and replay API requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows for debugging of other web apps and extensions, which can intersect with sensitive information and security boundaries.
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Risk likelihood

ModResponse - Mock and replay API has earned a good reputation and can be trusted.

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

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