Stable signalNo paid features detectedHigh-risk permissions

Requestly: Intercept & Modify HTTP Requests

Intercept & modify HTTP(S) traffic: redirect URLs, modify headers, inject scripts, mock REST & GraphQL APIs, and more.

Users300KCurrent public install base

Rating4.5Store average score

Reviews1,748Public review volume

Manifest versionV3Extension platform version

7-day growth0Net users gained this week

7-day growth rate0%Relative weekly velocity

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Start

4.47

Latest

4.47

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0.00

2026年7月15日2026年7月21日

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Technical snapshot

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Version25.9.24

ManifestV3

Size1.23MiB

Languages1English

Published--

Store updated--

Last crawled--

Overview

Product summary

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🚀 Best Chrome extension to supercharge Web Development & QA. Trusted by 300,000+ developers.

👉 Requestly works directly in Chrome with beautiful, modern UI and team collaboration features. Popular features - Modify HTTP Headers, Override API Responses, API Client, API Mocking & HTTP Interceptor.

⭐️ Open Source - https://github.com/requestly/requestly/

🌟 Top Use Cases

→ A beautiful & privacy-friendly API-Client

→ Mock API Responses to build frontend when backend isn't ready

Reviews

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Store average score4.5Chrome Web Store aggregate rating, including ratings without synced review text

Synced text average4.4Average computed only from synced review bodies below

Reviews with text1,240Synced review bodies

Total ratings / reviews1,748Chrome Web Store public rating/review count

Store average score: 4.5. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.

5★

959

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102

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1★

blustacksplayer123 1232026年1月12日

Requestly is a powerful and genuinely helpful tool for web developers and QA engineers who want to manage HTTP traffic right from their browser without complex setups. It shines in debugging and API testing, and most users find it intuitive and effective.

chris boseak2026年1月8日

Great extension! This is really helpful for modifying responses while I'm working on webapps.

Govind Patil2026年1月8日

As a front-end dev Requestly has saved me so much time. The HTTP Response Mocking feature is the best – I can easily mock API responses with custom JSON, add delays, and test without waiting for backend. No need for complicated tools like Charles; it's super simple and works right in the browser. Highly recommend to Web Apps developers.

Alper Uluses2026年1月8日

I like it

sherrin jacob2026年1月8日

I have being using this for couple of years. Very useful tool for API testing on a UI, especially for error handling scenarios and API response modification. Essential tool.

nick zuman2026年1月7日

great service and everything works fine! 5 stars

Rohan Patel2026年1月7日

Best extension so far to change payloads on the fly

Tom Melloul2026年1月6日

awesome

Renmi Li2026年1月6日

Requestly is one of the best tools I’ve used for development and QA—highly recommended!

Haolin Zhong2026年1月6日

Easy to use

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AI product read

Intercept, modify, and mock HTTP(S) network requests and responses directly in the Chrome browser

Enables web developers and QA engineers to modify network traffic (redirect URLs, modify headers, inject scripts, mock API responses) without setting up a proxy server, avoiding VPN issues and latency. Allows frontend development when backend APIs aren't ready, testing local JS/CSS changes on production sites, and overriding REST/GraphQL API responses.

User installs the extension, creates HTTP rules (redirect, headers, script injection, mock API responses) via the extension popup or the Requestly web app at app.requestly.io. Rules are stored locally in chrome.storage.local. When browsing, the service worker intercepts matching requests using declarativeNetRequest and webRequest APIs, applies the configured rules, and optionally records sessions for replay. The extension integrates with the Requestly web app for advanced rule management, team collaboration, and cloud sync.

Target users: Web developers / QA engineers / Frontend developers / DevOps engineers / API testers

Source code is heavily minified making detailed logic analysis difficult
Could not definitively determine if the web app UI (popup React app) requires login or renders locally without auth
The devtools/index.js is 1.69MB minified - deep inspection was not feasible within tool budget

Monetization

No paid features detected

No payment-related code found in the extension source: no premium/subscription/billing/pricing/upgrade/stripe keywords detected. The 'checkout' matches are all from the rrweb session recording library (checkoutEveryNms, isCheckout parameters) which is session replay checkpoint terminology, not payment. The extension is open source (https://github.com/requestly/requestly/). No feature gating, license checks, or payment UI found in the extension code. The destination service (Requestly/BrowserStack) likely has paid team/enterprise plans, but the extension itself does not gate features behind payment.

Confidence: 70
Payment platform: --
Source: AI / Medium
Login required: Yes
Reason: The extension's core rule-application engine works locally without login (rules stored in chrome.storage.local). However, the extension heavily integrates with the Requestly web app at app.requestly.io for session recordings (SESSIONS_URL), rule management UI, team collaboration, and cloud sync. The app.cs.js content script injects on requestly domains to bridge the extension and web app. Session recording drafts open at app.requestly.io/sessions/draft/{id}, and the externally_connectable manifest connects to BrowserStack domains. Login to the destination service (Requestly web app) is required for the full workflow including cloud features, session replay, and team collaboration.

Permission risk

High-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

敏感权限：proxy
扩展能力较强：scripting、storage、tabs、webRequest
主机权限覆盖范围较宽

Publisher

RQ Labs India Private Limited

Sachin Jain

Email: [email protected]
Phone: +919711001272
Address: Unity the Amaryllis, Phase-1 Flat 208, Tower 10B, Karol Bagh Delhi, Delhi 110005 IN

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