Requestly: Supercharge your Development & QA

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Features: Intercept & Modify HTTPs Requests, API Mocking, GraphQL Mocking, Rest API Client, API Testing, Modify HTTP Headers, etc

Image from store Requestly: Supercharge your Development & QA

Description from store 🚀 Best Chrome extension to supercharge Web Development & QA. Trusted by 200,000+ 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 → Modify HTTP Request & Response Headers → Test local JavaScript changes directly on production site. → Use HTTP Redirect Rule to load scripts from local or staging environments on production sites. → Modify and Mock API Request payload, Response body, & Status Code. → Override GraphQL Requests 📌 https://requestly.com/blog/what-is-requestly Requestly (now a part of BrowserStack.) doesn’t set up a proxy in your browser, and hence, developers don’t face VPN issues or lags while using it. Requestly leverages Chrome Extension APIs under the hood to hit API endpoints and to intercept & modify requests. ======== Top Features ======== 👉 Beautiful & Privacy-Friendly API Client → Test API Responses → API Collections → Environments (Variables & Secrets) → Pre-Request & Post-Response Scripts → Team Workspaces 📌 Demo Video – https://www.youtube.com/watch?v=xrqmAffe86k 👉 Mock XHR & Fetch API requests (Stub API Responses or API Mocking) → Helps in building frontend faster when backend (or APIs) don't exist → Define Custom API Responses triggered by XHR/fetch → Modify/Override API responses → Mock GraphQL API responses → Simulate fake HTTP Status Code (400s or 500s) 📌 Demo Video – https://www.youtube.com/watch?v=KIPbxUGUYq8 👉 HTTP Interceptor Features → HTTP Redirects (API or JS Redirects from one env to another) → Swap Host/Domain of HTTP Requests → Modify HTTP Request & Response Headers → Override XHR Request Body & Response Body → Insert Scripts → Block Network Requests → Add/Simulate Delay in HTTP Requests 📌 Demo Video – https://www.youtube.com/watch?v=vfcGy2666us ======== HTTP Interceptor Features & their Use-Cases ======== 👉 Redirect URLs, Change Host, Modify Query Params (Map Remote or Map Local) → Use dev/staging APIs in production sites & test local changes without code changes → Debug remote Javascript by loading locally running JS in production sites → Switch Hosts (e.g. abc.com/* to xyz.com/*) using Replace Rule → Debug Ad Tracking Pixels, Debug A/B Test Campaigns, etc → Remote Debugging with Requestly on Production sites → Swap Adobe Launch (Adobe DTM) scripts in production with staging script 📌 Demo Video -- https://www.youtube.com/watch?v=85GVaOWTnlE 👉 Insert Scripts to any Webpage → UserScripts are simple JavaScript/CSS code that can change the layout of a page, add or remove new functionality and content, or automate actions. → Use File Server to upload long scripts and Inject them using Script Rule → Inject your JS tags on potential customers' sites and test your features → The sales/product team can use this to demo the product directly on the prospect’s website (10x engaging demo) 📌 Demo -- https://www.youtube.com/watch?v=4dvucRjLwGY 👉 Cloud-based API Mock Server → Create API Mocks → Generate Mock data (random data) in the API response → Test Mock API endpoints using API client → Add delay to the API Mocks → Define custom HTTP status code & custom headers in the API Mock → CORS enabled. The mock endpoints work seamlessly without CORS errors. 📌 https://app.requestly.io/mocks 👉 Session Recording → Visual Bug Reporting Tool → Cut down your bug reporting time & debugging time → Automatically capture browsing video, Console logs, Network logs & env details → Get quality bug reports from QAs, Customer Support & other non-technical people → Easily Share Har files 📌 Demo Video – https://www.youtube.com/watch?v=g_qXQAzUQgU 👉 Requestly provides the following imports → All workspace data including api collections, environments and scripts from Postman → All api collections, and environments from Insomnia → All workspaces, api folders, and environments from Bruno → All HTTP header profiles from ModHeader → JSON configuration for Redirects & Scripts from Resource Override → XML configuration from Charles Proxy (Map local isn't supported yet due to technical limitations) 📌 Docs -- https://docs.requestly.com/general/imports/postman 👉 Additional Features → Enable/Disable rules with a single click → Export and import the rules and maintain a backup for your rules → Easy collaboration with others. Share Rules with other Users in one click 📌 Demo -- https://www.youtube.com/watch?v=BM7kTFy-vdc ======== References ======= 🏡 Website - https://requestly.com 📖 Docs - https://developers.requestly.com 🥷 Github - https://github.com/requestly/requestly 💻 Desktop App - https://requestly.com/desktop 📳 Issues - https://github.com/requestly/requestly/issues 🔓Privacy - https://requestly.com/privacy

Latest reviews

(2025-07-01) Armand Smit: I used Requestly to test my React App error handling capabilities, and it's awesome!
(2025-07-01) Steffen Sander: I used requestly to spoof the response on the New York Times Puzzle pages to have custom-made puzzles for my girlfriend as a small gift for our anniversary. The tool worked flawlessly and she was super happy to have individual relationship-themed puzzles with the original NYT look&feel! The team was super eager to help me out by even extending my trial slightly :) It's a great tool with an even better team behind it
(2025-06-30) Daniel Gonzalez: Great tool! Easy to modify headers and api responses
(2025-06-29) Francesca Cella: One of the best tool I ever use to work! Really powerful tool. No particular setup is needed, it makes development and QA a lot easier and faster. With all the feature offered, a lot of scenario are covered, from simple to high customization required use cases.
(2025-06-29) Dimas Yoga Permana: Great tool, save a lot of time on manipulating network request and APIs.
(2025-06-29) Arjan: easiest api tool to use, more advanced and user friendly than others too
(2025-06-28) Sagar: Great tool - easy to use
(2025-06-27) Ihor Dziuba: Great!
(2025-06-27) Program manager: It's Great!
(2025-06-26) Vi Salazar: easy to use
(2025-06-26) Alexey Gavryushkin: Super mock service, I'm recommend this to all frontend developers
(2025-06-26) Majid Ghafouri: Perfect
(2025-06-26) Olivia Le: Great, I use this everyday
(2025-06-25) Samuel Cortés Jurado: GOOD
(2025-06-25) grigor ganekov: Nothing else like it, it is Perfect
(2025-06-25) Sneha Sowrabha: Perfect
(2025-06-24) Константин Лазарев: It's a good application for me, while the rating is low for some bugs and lags, but I really like that you continue to develop and get better!
(2025-06-24) Platon Zakharov (Paradoks): Realy perfect and comfortable app for developing, but i think so coastly. Also you can't buy a cheap tariff monthly, only for a year. Or monthly but not cheap
(2025-06-18) Vojta Briza: Perfect
(2025-06-05) Wilmer Guerrero: so far, so good. This tool helped me a lot ;)
(2025-06-03) Alayne Deleppo: Very helpful in modifying requests. I had tried other solutions which proved unreliable, but Requestly came to my rescue with a free trial and a lot of support for my questions.
(2025-06-03) Ghanshyam Dobariya: Overall UX of requestly is developer friendly. Me and my team are using it from 1+ year and journey so far is super smooth.
(2025-06-02) Grigorii Pika: Great tool, have been using it daily for the past 1.5 years to set up demos and test our app with different websites
(2025-05-29) Olivier Rousseau-Guyot: Most flexible tool to inject and intercept scripts in websites
(2025-05-19) Raul Gamez: We starting using it as an alternative to mock our requests and we realized it was super useful in our daily life. Super top tool!
(2025-05-19) Priyank Nahata: Works well and very easy to pick up and friendly UI
(2025-05-19) Davide Velluto: Super useful, great functionalities and tests to setup the proper mocks. Sharing requests with team mates is so useful and done very easily.
(2025-05-16) Juan Castro: Really useful tool to mock server responses. It makes frontenders happier 😍
(2025-05-14) Ana Andrea Ramiro: Really easy to use, setting a new rule with your response is simple. Also the team behind this is really helpful!
(2025-05-12) Edward Green: sarr i am very thankful
(2025-05-01) Andréa Couture: I use this tool on an almost daily basis to create demos for my clients. They also have a very responsive and efficient support team. Highly recommend!
(2025-04-25) Tarun Jain: It’s become a permanent part of my dev setup. If you work with APIs, or ever need to tweak how a page behaves in your browser, I highly recommend giving Requestly a shot. It saves time, reduces friction, and just works. I especially love: • Mocking APIs during frontend development. • Blocking third-party scripts (super useful for performance testing). • Modifying request/response headers to test edge cases quickly. • The team sharing feature, which is a huge win for collaborative debugging.
(2025-03-24) Raja: Incredible Tool for API Testing & Interception! Requestly has been a game-changer for my workflow! As a developer, I often need to modify API requests, test different scenarios, and debug network calls. This extension makes it incredibly easy to intercept, modify, and mock requests without needing complex setups. What I love about Requestly: ✅ User-friendly Interface – Super intuitive and easy to navigate. ✅ Powerful Features – Modify requests, redirect URLs, block ads, and test APIs effortlessly. ✅ Time Saver – Eliminates the need for local proxies or backend changes. ✅ Works Seamlessly – Reliable and doesn’t slow down my browser. I've tried many similar tools, but nothing comes close to the flexibility and ease of use that Requestly offers. Highly recommended for developers, testers, and anyone dealing with APIs!
(2025-03-22) if elif: rubbish！doesn't works without internet! then how dare you called "Local-first Developer Tool"? ridiculous!
(2025-03-10) Maxime Talon: It isn't free. You must pay to use this extension.
(2025-01-28) Anish Sharma: Simple to use, great UI/UX, does the job
(2025-01-09) Harry S: We have been using Requestly for HTTP Rules and Network inspector capabilities, which works great. We recently migrated from Postman to API Clients capability of Requestly. # Seamless migration for our 100+ postman collections / environments in single click. # Great support and diligence from team in building required features and incorporating feedback.
(2024-12-26) Kuldeep Soni: I’ve found Requestly to be an invaluable Chrome extension for development. It allows me to mock APIs, intercept requests, and test frontend changes even when the backend isn’t ready. The ability to modify headers, simulate delays, and inject scripts has made debugging and collaborating so much easier
(2024-12-26) לירן בלומנברג: Absolutely love the API Client feature! It’s like Postman, but better integrated into my daily workflow. Modifying API responses directly from the same tool I use for debugging is such a time-saver. Great job, Requestly team, for constantly innovating!
(2024-12-20) Mayank Sharma: Super useful! Really like the new API Client feature, which kinda replaces Postman and Hoppscotch for me since I can easily do API testing as well as modify API responses.
(2024-12-12) Charlie Tysse: My absolute favorite web debugging proxy and API client. I use it nearly every day for work to modify HTTP requests, test and mock API calls, inject JS snippets into sites, etc. The Requestly team is incredible — I once submitted a bug report and it was closed out within an hour. Also just kind, passionate people. I can't recommend Requestly enough.
(2024-12-11) Alex Green: The best solution for android phones and tablets.
(2024-12-10) Gautam Prajapati: I’ve been a regular user for request modifications, but I recently tried their new API client and I’m genuinely impressed! Quickly imported my existing Postman collections, synced the environment variables, transitioning was incredibly smooth. I don't need to keep two apps now.
(2024-12-05) Alessandro Dionisi: A productivity booster for development and QA phases. The team is continuously introducing features and improvements, also listening to feedbacks. Really a game changer for development teams.
(2024-12-05) Carlos Lancha: Super useful tool to mock our HTTP requests, it helped me to increase my development speed x3, it has become a must in my list of tools. Also the team is always super willing to help, accepting our feedback and implementing our suggestions, making our job easier! Good job!
(2024-11-25) Manuel Garnel: Good tool to work with... Is possible to count number of retries for a request?
(2024-11-22) Rik Williams: Swiss army knife of a tool which has saved me and my team so much time in development and DevQA. Being able to alter API responses if so efficient and useful to confirm all the different use cases. Give it a try if you are involved in any web software development or QA.
(2024-11-20) Zach Moss: Absolute game changer of a tool for me and my team. I have been able to fully customize my demo environment for all different types of prospects. The Requestly team has been so supportive in helping us achieve our goals and are always quick to answer any queries we have. Can't recommend it enough!
(2024-11-08) Damien Dall'agnola: forced trial
(2024-11-06) Mitesh Sevani: This tool is amazing. It is very easy to set up and it has made the lives of software engineers and QA testers that little bit easier. My main usage of the extension is to view the app version (urls) of the Telegrap App. Definitely recommend.

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200,000

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