Product
API Client

A lightweight and secure API Client for faster API Development & Testing

HTTP Interceptor

A Powerful HTTP Interceptor to Intercept, Record, Debug & Modify HTTP Requests

API Mocking

Build frontend faster without waiting for backend.

Use Case
Frontend Web/Mobile Developers

Requestly improves front-end workflows with local JS testing, mocking, and SessionBook debugging.

For QA engineers

QA engineers love Requestly for its features and ease of use, allowing easy edge case testing.

Support Engineer

Support engineers value Requestly for debugging, demoing, and overriding GTM and Adobe scripts.

Backend Developers

Requestly helps in improving back-end development workflows, by enabling testing.

Requestly vs Postman
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Student Programme

📣 Requestly API Client – Free Forever & Open Source. A powerful alternative to Postman. Try now ->

Insights
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Case Studies

Blog

Requestly blog

Explore easy to follow tutorials, real-world case studies, and behind the scenes insights into the features we build and the developers who bring them to life.

Requestly security and compliance

Announcing Requestly’s SOC 2 Type II Compliance Certification

Requestly is now SOC 2 Type II certified, ensuring enhanced data security and trust for our users. Learn more about our commitment to data protection.
Sachin Jain
September 26, 2024

Featured posts

Announcing No-Bug November: Get Paid to Squash Bugs & Land a 2026 Internship!
Join No-Bug November — a month-long bug bash to make Requestly faster and more stable. Fix bugs, earn bounties, win swags, and even land internships!
Akanksha Bhadauria
November 10, 2025
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
AB Tasty scales testing and demos with Requestly
AB Tasty accelerates testing and demos with Requestly—switching environments, injecting scripts, and personalizing sites in seconds.
Akanksha Bhadauria
October 16, 2025

All posts

DELETE Method in HTTP
Explore the DELETE method in REST APIs and learn how to test and intercept requests effectively using Requestly HTTP Interceptor.
Asmita Bhattacharya
December 4, 2025
Running Ollama with Requestly – A guided tutorial
Run LLMs fully locally using Ollama and route API calls with Requestly no backend code needed. Get private, fast, cloud-like AI responses right from localhost.
Sayanta Banerjee
December 4, 2025
Why You Need a Local-First API Client (With Hands-On Example)
Local-first API clients boost speed, privacy, and offline reliability by keeping requests and data on your device—cutting hidden dependencies and reducing technical debt.
Anusha Kuppili
November 28, 2025
How MCP Impacts API: A Comprehensive Analysis
MCP standardizes how LLMs interact with tools and APIs, making predictability essential. This blog explains MCP, its impact on APIs, how developers use it, and where Requestly fits.
Sayanta Banerjee
November 27, 2025
how to use cursor to generate api testcases in requestly
How to use Cursor to Generate API Testcases in Requestly
API testing automation with Cursor and Requestly makes test creation faster, local-first, and far more reliable by generating and running endpoint tests without manual scripting.
Aniket Bhattacharyea
November 27, 2025
What is a Reverse Proxy and How Does It Work?
Learn more about how a reverse proxy boosts speed, security, and scalability by routing requests, blocking threats, and protecting your backend servers.
Kanishk Rawat
November 25, 2025
How to Use the if() Function in CSS
CSS’s new if() function adds conditional logic directly to styles, letting you change values based on media queries, variables, or feature support no JavaScript needed.
Dinesh Thakur
November 21, 2025
Learn about Accept-Encoding in HTTP Requests
Learn what Accept-Encoding means, how it works, and why it improves website performance and load times
Team
November 18, 2025
Understanding 2xx HTTP Status Codes: Successful Responses Explained
Explore key 2xx HTTP status codes, their meanings, and how they confirm successful server responses.
Azma Banu
November 18, 2025
x-frame-options header setup best practices common issues
X-Frame-Options Header: Setup, Best Practices & Common Issues
Learn how to implement, test, and monitor X-Frame-Options headers to protect websites from clickjacking and framing attacks.
Rohit Rajpal
November 18, 2025
What Are API Keys? A Guide to Authentication and Security

APIs allow applications to communicate with each other. To control and secure access, APIs often require a method to identify the client making the request….

Rohit Rajpal
November 18, 2025
What is the Vary Header and How Does it Work?

The Vary header is an HTTP response header that tells caches which request headers affect the response. It ensures that different versions of a resource are…

Rohit Rajpal
November 18, 2025
What is a User-Agent Header: Complete HTTP Request Header Guide
Learn what a User-Agent header is, its key components, how it affects browsers and devices, and techniques to test user-agent headers.
Rohit Rajpal
November 18, 2025
how to structure multiple graphql queries in one request
How to Structure Multiple GraphQL Queries in One Request?
Understand the benefits of structuring multiple GraphQL queries in one request, learn when to use them, how to optimize performance, and handle challenges.
Rohit Rajpal
November 18, 2025
complete guide to x-xss-protection and web security
Complete Guide to X-XSS-Protection and Web Security
Learn what X XSS protection is, how it works, different X XSS attack types, how to integrate it, and advanced strategies for web security.
Rohit Rajpal
November 18, 2025
what is x-forwarded-for a complete guide
What is X-Forwarded-For: A Complete Guide
Learn what X-Forwarded-For is, how it works, its impact on web security, logging, and best practices for accurate client IP tracking.
Rohit Rajpal
November 18, 2025
x-content-type-options benefits purpose and best practices
X-Content-Type-Options: Benefits, Purpose, and Best Practices
Learn how X-Content-Type-Options improves web security, its purpose, and best practices for implementation and protection.
Rohit Rajpal
November 18, 2025
When to Use GraphQL Over REST API?
Learn when to use GraphQL, explore its benefits, key use cases, limitations, and how to migrate to GraphQL from REST.
Rohit Rajpal
November 18, 2025
httponly cookie benefits use cases and best practices
HttpOnly Cookie: Benefits, Use Cases, and Best Practices
Learn what is HttpOnly cookie, its benefits, use cases, challenges, best practices, and how to implement and test it securely.
Rohit Rajpal
November 18, 2025
what is grpc meaning benefits and architecture
What is gRPC: Meaning, Benefits, and Architecture
Understand what gRPC is, its key features, use cases, and its architecture. Also, learn how to set up and implement gRPC in your application.
Rohit Rajpal
November 18, 2025
the beginners guide to apis types benefits and protocols
The Beginner’s Guide to APIs: Types, Benefits, and Protocols
Understand what APIs are, how they work, types, benefits, and protocols that ensure secure and effective data exchange.
Rohit Rajpal
November 18, 2025
what is rest api examples principles and use cases
What is REST API: Examples, Principles, and Use Cases
Learn what REST APIs are with practical examples such as user management, e-commerce, and payment systems, and how they work in real scenarios.
Rohit Rajpal
November 18, 2025
Rest API Client: Features, Benefits & Top Tools
Explore what a REST API Client is, its benefits, features, and top tools in 2025. Compare Requestly, HTTPie, ARC, Curl, and Thunder Client.
Rohit Rajpal
November 18, 2025
Request URL: What It Is and Why It’s Essential
Learn what a request URL is, its structure, and why it is important for API testing, debugging, and application reliability.
Rohit Rajpal
November 18, 2025
Mock vs Stub vs Fake: Core differences
This guide explains the differences between mocks, stubs, and fakes in API testing and helps you choose the right one for your test case.
Rohit Rajpal
November 18, 2025
What Is a Network Delay Request and Why Does It Matter?
Learn what network delay requests are, why they matter, and how to test APIs and applications using Requestly for reliable performance.
Rohit Rajpal
November 18, 2025
Node.js Mock Server Setup: A Complete Tutorial
Explore the full process of Node.js mock server setup, including structured endpoints, mock behaviors, and tips for long-term maintenance.
Rohit Rajpal
November 18, 2025
Mock vs Stub: An In-Depth Comparison for API Testing
Learn the differences between mocks and stubs, and how to choose the right one by mapping it to what your test is actually validating.
Rohit Rajpal
November 18, 2025
Mock Service Concepts & Tools: Create Your First Mock Easily
Learn key mock service concepts, best practices, tools, and common mistakes to improve testing speed, reliability, and control across environments.
Rohit Rajpal
November 18, 2025
The Ultimate Guide to Mocking APIs with Playwright
Learn how to mock APIs with Playwright and explore advanced techniques, including conditional mocking, HAR files, and dynamic responses.
Rohit Rajpal
November 18, 2025
How Lodash Can Simplify Your API Testing
Learn how to enhance your API testing in Requestly by importing Lodash and other libraries for effective data transformation and manipulation.
Kanishk Rawat
November 17, 2025
top 10 api simulation tools comparison guide
Top 10 API Simulation Tools Comparison Guide
Explore the top 10 API simulation tools for seamless development and testing. Compare features, use cases, and best practices to choose the right mock server tool.
Azma Banu
November 13, 2025
how to run failed test cases in testng_ methods and best practices
How to Run Failed Test Cases in TestNG: Methods and Best Practices
Learn how to rerun failed test cases in TestNG using testng-failed.xml, IRetryAnalyzer, and listeners. Explore challenges, best practices, and why retries should be tested on real browsers.
Azma Banu
November 13, 2025
handling cookies in selenium_ complete guide with examples
Handling Cookies in Selenium: Complete Guide with Examples
Learn how to manage, add, delete, and troubleshoot cookies in Selenium WebDriver with practical examples and best practices for real device testing.
Azma Banu
November 13, 2025
a step-by-step guide on how to launch a browser in selenium
A Step-by-Step Guide on How to Launch a Browser in Selenium
Learn how to launch different browsers in Selenium WebDriver, including Chrome, Firefox, and Edge. Explore browser options, common issues, and how to run tests on real devices with BrowserStack Automate.
Azma Banu
November 13, 2025
performing mouse hover in selenium_ techniques and best practices
Performing Mouse Hover in Selenium: Techniques and Best Practices
Learn how to simulate mouse hover in Selenium using the Actions class. Explore best practices, challenges, and why real device testing is essential for accurate results.
Azma Banu
November 13, 2025
selenium architecture_ understanding key components and structure
Selenium Architecture: Understanding Key Components and Structure
Explore the architecture of Selenium, including WebDriver, Grid, IDE, and RC, and understand how these components work together for efficient test automation.
Azma Banu
November 13, 2025
testng listeners explained with examples and best practices
TestNG Listeners Explained with Examples and Best Practices
Learn what TestNG listeners are, their types, implementation methods, common challenges, and best practices with practical examples.
Azma Banu
November 13, 2025
handling iframes in selenium webdriver with examples
Handling iFrames in Selenium WebDriver with Examples
Learn how to handle iFrames in Selenium WebDriver. Explore switching methods, challenges, best practices, and real-world automation scenarios.
Azma Banu
November 13, 2025
selenium framework_ structure setup and best practices
Selenium Framework: Structure, Setup, and Best Practices
Understand the Selenium framework with its components, setup process, and best practices to build scalable, maintainable test automation.
Azma Banu
November 13, 2025