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Chrome extension

Instant & lightweight. Run the Requestly right inside your browser. Design, test, and mock APIs with collections, environments, and scripts.

Add To Chrome

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Mac app

Local-first and more powerful. Use the Requestly on your desktop to design, test, and mock APIs across web, mobile, and desktop apps.

Download For Mac

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API Client

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

API Playground

API Collections

Local & Team Workspaces

API Tests

Import from Postman & Bruno

HTTP Interceptor

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

Redirect URL

Replace Rule (Switch Domain)

Insert Custom Scripts

Modify Query Param

Cross Device Testing

Block Network Requests

API Mocking

Build frontend faster without waiting for backend.

Modify API responses

Modify API request body

Modify HTTP Status Code

Create Mock Endpoints

Supports GraphQL API Overrides

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

Use Cases

Features

Redirect URL Replace Rule Modify API Response Modify Headers Insert Scripts Modify Query Param Cross Device Test GraphQL APIs

Resources

Pricing Blog Use Cases Academy Privacy Policy Terms of Service Refunds and Cancellations

Company

About Us Contact Us Careers Press EULA Community Guidelines

Compliance

SOC2 DPA GDPR Great Place

Developers

Release notes Report issues GraphQL support OSS friends Github Join Community

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Compliance & accreditations

SOC 2

GDPR

GREAT PLACE

Compare Requestly with

Charles Proxy Wireshark Insomnia

Modheader Fiddler Bruno

Proxyman Mockoon

HTTP Toolkit Postman

Resource Override Hoppscotch

How to Guides

Redirect Your Local Ad Server to Production for 2x Faster Development

Block a header bidding script on websites to isolate testing of other scripts.

Easily Test your Local RTB Scripts on Production Without Deploying

Simplify Demos by Directly Testing Ads on Client Websites

How to Simulate Different Devices Using User-Agent

Test How Your System Handles Geo-Targeting Information

A/B test bundles on production to evaluate their performance.

Case Studies

How Blockthrough uses Requestly to seamlessly test their JS on publisher websites

Breaking Hardware Testing Barriers: Plume’s Journey with Requestly’s API Mocking

From hours to minutes: Stay22’s Journey to Faster Script Deployment with Requestly

Optimizing Ad Delivery with Requestly : Adpushup’s Story

Get Requestly Free for one year!

Use Cases

How to test product changes without actually deploying to production

How to load local script in production in Adobe Launch

How to redirect search query to DuckDuckGo

How to modify HTTP requests matching regex

Simplifying API Testing with Requestly API Mock Service

How to simulate API latency during development

Simulate HTTP Status codes — 400, 404, 500, etc using Requestly

Simulating 404 HTTP status code in Blinkit Search API

How to test and debug Adobe Target campaigns in Chrome

Try Convertflow on Any Website under 30 Seconds

How Requestly helps developers and QA modify HTTP requests

What is CORS and how to bypass it?

How to Guides

Case Studies