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
Product Updates
Use Cases
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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

how to use expires header
How to Use Expires Header
Learn about the Expires header, how it boosts web performance, and how to test it with Requestly HTTP Interceptor for real-time debugging.
Asmita Bhattacharya
December 12, 2025
understanding the cookie header
What are Secure Cookies?
Learn about secure cookies, their role in web security, and how to test and modify them in real-time using Requestly HTTP Interceptor.
Asmita Bhattacharya
December 12, 2025
understanding samesite cookies
Understanding SameSite Cookies
Learn about SameSite cookies, their role in security, and how to test and modify them in real time using Requestly HTTP Interceptor.
Asmita Bhattacharya
December 12, 2025
what is the content-type header
What is the Content-Type Header?
Learn everything about content-type header, how it affects data handling and best practices in this detailed guide.
Asmita Bhattacharya
December 12, 2025
how the content-length header works
How the Content-Length Header Works
Explore the Content-Length header in HTTP and how to debug and modify it in real time using Requestly for seamless data transfer inspection.
Asmita Bhattacharya
December 12, 2025
understanding content security policy and its importance
Understanding Content Security Policy and its Importance
Learn about the importance of content security policy, how to set it up, best practices, and its impact in this detailed article.
Asmita Bhattacharya
December 12, 2025
content encoding in http
Content Encoding in HTTP
Understand HTTP content encoding and use Requestly to test, inspect, and debug gzip or Brotli compression across web responses.
Asmita Bhattacharya
December 12, 2025
Best Practices for Designing and Testing GraphQL Schemas and Types
Master GraphQL schema design with proven best practices for clarity, scalability, and testing, build robust, maintainable APIs efficiently.
Rashmi Saini
December 12, 2025
Building and Testing GraphQL APIs in Rust: Frameworks, Best Practices, and Tools
Explore how to build and test GraphQL APIs in Rust using async-graphql and juniper, with automation, schema validation, and Requestly integration for high reliability.
Rashmi Saini
December 12, 2025
GraphQL with Ruby: Building Modern APIs
Learn how to build GraphQL APIs with Ruby using graphql-ruby, covering schema design, queries, mutations, and testing with Requestly for efficient debugging.
Rashmi Saini
December 12, 2025
GraphQL Resolvers Explained: The Core of Data Fetching and API Logic
A GraphQL resolver is a function that fetches data for a schema field, enabling efficient, on-demand queries. It connects queries to data sources using parent, args, context, and info.
Rashmi Saini
December 12, 2025
Understanding GraphQL Requests
Discover how GraphQL Request simplifies API testing with minimal setup, powerful queries, and easy integration for developers and testers.
Rashmi Saini
December 12, 2025
GraphQL Relay for React: Streamlined, Scalable Data Management
Learn how GraphQL Relay empowers React apps with efficient data fetching, modular fragments, compile-time validation, and seamless pagination at scale.
Rashmi Saini
December 12, 2025
Mastering GraphQL with React: Efficient Data Fetching and Debugging
Learn how to integrate GraphQL with React using Apollo Client, implement best practices for data fetching, error handling, and optimize debugging workflows.
Rashmi Saini
December 12, 2025
Mastering GraphQL Queries: Debugging, Best Practices & Performance
Learn how to write, debug, and optimize GraphQL queries effectively. Discover best practices for error handling, performance, and schema design in modern APIs.
Rashmi Saini
December 12, 2025
GraphQL in Python: Best Practices for Schema, Performance & Debugging
Master GraphQL in Python with best practices for schema design, performance optimization, and effective debugging for scalable APIs.
Rashmi Saini
December 12, 2025
GraphQL with PostgreSQL: Build Scalable APIs with Node.js
Explore the powerful combination of GraphQL and PostgreSQL to build fast, secure, and scalable APIs.
Rashmi Saini
December 12, 2025
GraphQL with Node.js: API Development, Best Practices, Debugging
Learn to build powerful APIs with GraphQL and Node.js. Explore schema design, resolvers, performance optimization, security, and debugging with Requestly for modern API.
Rashmi Saini
December 12, 2025
Understanding the X-Forwarded-Proto Header: Purpose, Use Cases, and Security
Learn how the X-Forwarded-Proto header preserves client protocol info in proxy environments, its role in HTTPS handling, and best practices for secure implementation.
Rashmi Saini
December 12, 2025
Understanding X-Forwarded-Host: Security Risks and Safe Implementation
Learn how the X-Forwarded-Host header can introduce security risks like host injection and cache poisoning, and discover best practices for secure, reliable use in web applications.
Rashmi Saini
December 12, 2025
Unsafe-Inline in CSP: Why is it a Risk and How to Fix it
Discover why ‘unsafe-inline’ in Content Security Policy compromises web security and explore secure alternatives to build robust defenses.
Rashmi Saini
December 12, 2025
The Developer’s Swiss Army Knife: HTTP Interception, Mocking, and Testing in One Tool
A unified, lightweight tool that replaces API mocking, interception, and testing—cutting context switching so developers stay in flow and ship faster.
Sohail Saifi
December 11, 2025
Requestly: The All-in-One API Tester, Mocking, Traffic Interception & Debugging Tool for Developers
Why Requestly has become the go-to smarter debugging tool- API mocking, and traffic-rewriting tool for modern software developers. also learn how it saves hours, improves productivity, and simplifies frontend-backend integration.
Md. Hasan Monsur
December 11, 2025
The All-in-One Alternative to Charles Proxy + Postman for Modern Developers
All-in-one tool that replaces Charles Proxy and Postman with fast interception, API testing, mocking, and local-first debugging.
Sohail Saifi
December 11, 2025
The Rise of AI-Powered Frontend Development — Copilot / Cursor / Figma-to-Code MCP
Sonika
December 9, 2025
Everything you need to know about Managing Security during API Testing
Managing security during API testing is crucial. Learn the risks of cloud tools and why a local-first workflow like Requestly keeps your data safer.
Sayanta Banerjee
December 9, 2025
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