HTTP interceptor - Requestly API Client - Page 8

Requestly joins BrowserStack to build the future of application testing

Requestly’s partnership with BrowserStack revolutionizes application testing, enhancing developer efficiency with advanced tools and cloud infrastructure.

Http Interceptor

Product Updates

Featured posts

Top Builds at PEC Hacks 3.0: MetalliSense Wins

Explore top builds from PEC Hacks 3.0 and discover how MetalliSense leveraged AI and Requestly for innovative real-time metal analysis.

Akanksha Bhadauria

January 19, 2026

That’s a Wrap on Hacktoberfest 2025: Our Success Story

Requestly’s first Hacktoberfest was a huge success! 🎉 15 new contributors, 28 total contributions, and an incredible mix of code & no-code creativity.

Akanksha Bhadauria

November 5, 2025

How Requestly Enables Personalized Brand Demos Fast

Global learning tech provider uses Requestly to deliver brand-personalized demos in minutes by swapping logos, images, and data—no code or backend changes.

Akanksha Bhadauria

October 23, 2025

All posts

What are Authorization Headers?

Learn about authorization headers, their importance in web security, and the different types used in modern web development.

August 23, 2023

How to generate HAR files in Chrome, Firefox & Safari?

Learn how to create HAR files using popular browsers (Chrome, Firefox, Safari) and Requestly for comprehensive website analysis.

Demystifying How Postman Web Works

Learn how Postman Web overcomes CORS limitations to send API requests. Explore its proxy server architecture and request handling mechanisms.

Modify HTTP Headers in Browsers Using Requestly

Using Requestly, you can modify headers of HTTP(s) Requests & Responses in Chrome, Firefox & Safari for better control over your HTTP(s) Requests.

Simulate 500 Error in Create Tweet API on Twitter

Using Requestly, you can simulate different HTTP status codes for testing purposes. In this blog, we will see how to simulate 500 code using Twitter API.

Top 5 Web Debugging Proxies for Beginners

Explore the top 5 web debugging proxies, including Charles Proxy, Mitmproxy, Wireshark, Burp Suite, and Requestly. Compare features, pricing, and support.

How to Add an Authorization Header in Chrome, Firefox & Safari

Using the Requestly Chrome extension, you can add authorization headers to every request in Chrome, Firefox, & Safari.

Open-source frontend development stack

Explore a complete open-source stack for frontend development, including frameworks, testing tools, debugging utilities, and deployment solutions.

How to insert scripts dynamically in a webpage

Learn how to dynamically insert scripts into web pages using Requestly for on-the-fly modifications and enhanced functionality.

What Are HTTP Headers? Types & Their Use Cases

Learn about the different types of HTTP headers, including security, authentication, caching, CORS, and more. Essential knowledge for web developers.

What are X-forwarded Headers, and why it is used?

Learn about X-Forwarded headers (X-Forwarded-For, X-Forwarded-Proto, etc.) and their importance in web development and security.

Build a Google Chrome Extension to Modify HTTP Headers

Learn to build a Chrome extension to modify HTTP headers using the DeclarativeNetRequest API. Step-by-step tutorial and code examples.

Introduction to WebPack & Top 5-features of Webpack

Unlock the power of Webpack with our guide highlighting its top 5 features that streamline JavaScript application bundling for developers.

Resource Override Chrome Extension Alternative

Discover the best alternative to Resource Override: Requestly, featuring seamless migration and advanced debugging tools for effortless browsing.

Modify API Request Body in Chrome, Firefox, Android & iOS

Learn how to modify API request bodies on-the-fly using Requestly. Test edge cases, add data, and change GraphQL queries without code changes.

How to modify the response body of HTTP requests?

Learn how to modify HTTP response bodies on-the-fly using Requestly. Test APIs, simulate different scenarios, and debug faster without server changes

How to modify the response body of JS files

Learn how to modify the response body of JS files effortlessly with Requestly, ensuring safe testing without disrupting your live site.

How to simulate HTTP status code?

Learn how to simulate different HTTP status codes for testing your web application’s error handling. Use Requestly to easily modify responses.

Chrome Developer Tools – Network Tab

Learn how to use the Chrome DevTools Network tab to analyze, test, and debug your web applications. Inspect network activity, timing, headers, and more.

Debugging Next.js App in Production

Learn how to debug Next.js apps directly in production using Requestly. No local setup needed! Speed up your debugging workflow.

What is a HAR file and How to analyze them?

Learn what HAR files are, what they contain, and how to analyze them for web debugging and performance analysis.

Life Cycle of a HTTP Request

HTTP requests are messages of communication between web API’s and their clients of computers. We discuss life cycle of a HTTP request in this article.

A Guide to Mock APIs & Roundup of Top 5 Tools (Free & Paid)

Discover Mock APIs, their benefits, use cases, and best practices. Comparing the top 5 free and paid Mock API tools to optimize your development workflow

June 2023 Product Updates

Learn about all the Requestly updates from June 2023: improved app layout, Cmd+K menu, in-rule help, enhanced GraphQL support, and Arc browser integration.

Adding Delay to Network Requests

Learn how to simulate network delays for testing web applications. Explore different methods and tools for realistic testing scenarios.

How to troubleshoot the CORS error using Requestly?

CORS, or cross-origin resource sharing, happens when an endpoint being served from domain-A.com is requested from another domain-B.com

How to Embed iFrames by Bypassing X-Frame-Options

There are two methods to bypass iframe blocking: By removing X-frame options and adding the frame-ancestor directive to the Content-security policy.

5 Chat GPT Prompts That Every Frontend Developer Should Know

Learn how to leverage ChatGPT for frontend development. These 5 prompts will help you generate code, debug, test, and optimize your projects.

Top 6 Developer Tools to Enhance Your Front-End Workflow

Streamline your front-end development with these 6 must-have tools. Improve coding, testing, and debugging efficiency.

5 Ways to make App & Web Debugging extremely easy

Learn how Requestly can streamline your web development workflow with these 5 powerful features for testing and debugging.

How Requestly empowers developers & QAs in AdTech Industry

Most Tech giants rely on Ads as their primary business model. See how Requestly powers devs & QAs!

April 2023 Product Updates

Discover Requestly’s key April 2023 product updates, enhancing desktop app usability and streamlining rule creation for a seamless user experience.

How to do selenium automation testing using requestly

When developing applications, we optimize for our home network but overlook unstable or low coverage scenarios, crucial for selenium automation testing.

Beyond Office Walls: Requestly Offsite & Hackathon

Requestly’s first Offsite and most awaited 48-hour Hackathon.

Akanksha Bhadauria

Chrome Developer Tools: A Beginners Guide

Discover essential tips in this beginner’s guide to Chrome Developer Tools, empowering you to enhance your web development skills effectively.

Postman vs Insomnia vs Hoppscotch vs Thunder Client

Finding the best API client can be difficult when there are 10s of tools with slightly different features, let’s find which one is best for you.

Debugging CORS Issue with Lea Verou

Learn how we helped Lea Verou debug a tricky CORS issue using Requestly. See how to solve CORS errors quickly and efficiently.

Modify HTTP Requests in Chrome & Safari Using Rules

Learn about the different rule types in Requestly and how they can be used to modify HTTP requests for testing, development, and more

GET vs POST vs PUSH HTTP Methods

HTTP has many features and benefits that help moderate the entirety of the World Wide Web. Wonder what makes it such a huge deal? Let’s dive in.

How to replace production JS with the one hosted on Github

Discover how to securely replace production JS with JavaScript hosted on GitHub using Requestly.

February 2023 Product Updates

Learn about all the Requestly updates from February 2023: open-sourcing, revamped help guides, improved team workspace, and upcoming GraphQL support.

Hoppscotch vs Postman vs Requestly: API Client Comparison

Compare Hoppscotch, Postman, and Requestly to find the best API client for seamless testing and improved efficiency in your development workflow.

How Postman Web handles CORS?

Learn how Postman Web handles CORS by routing requests through its own server. We also discuss a more secure alternative.

How to block domains using Requestly

Learn how to block unwanted domains using Requestly to improve browsing speed, privacy, and control.

How to load local JS files on live Production sites

Useful in debugging JS production bugs or testing local changes before shipping code to production.

How to Map Local (File)

Learn how to use Requestly’s Map Local feature to serve local files for testing and development, speeding up your workflow.

How to pin rules in Requestly

You can pin rules in Requestly and access them from anywhere using Chrome toolbar. You can toggle the status of pinned rules directly from the toolbar.

How to set up requestly on Firefox using WebExtensionAPI

Learn how to develop and run Requestly on Firefox with this comprehensive guide using Webextensions API Firefox. Step-by-step instructions for development

How to select the right HTTPs method

Learn how to select the right HTTP method for your web application to enhance performance and ensure optimal functionality with our easy-to-follow guidelines.

HTTP Headers That Every Web Developer Should Know

Learn about the most important HTTP headers every web developer should know, including security, performance, and caching headers.