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Requestly

Free and open-source API Client & Interceptor.

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/learn @requestly/Requestly

README

Requestly

Join Requestly community on Discord: Link

Requestly - API Client with HTTP Interceptor, Modfications, Testing & Mocking.

Requestly is a powerful combination of a local API Client (like Postman) & HTTP Interceptor (like Charles Proxy) with API Testing and Mocking. Requestly can be used directly in the browser as a Chrome Extension or installed as a desktop application.

⚡ A Local-first & Powerful alternative to Postman & Charles Proxy ⚡

requestly-overview <br/>

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🏡 Getting Started

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A Local-first Solution (Local Workspaces)

Local Workspaces is a simple, powerful, and privacy-friendly approach to building, testing & mocking your APIs. All your data is stored in the selected directory on your disk. You can also import all your API client files (requests, collections, environments) and codebase into VSCode and edit them directly in your IDE.

Collaborate with your colleagues using your preferred sync engine - Git, Google Drive, iCloud, or nothing at all.

Team Workspaces are great for seamless collaboration through Requestly sync engine.

⚡ Local and team workspaces⚡

requestly-local-first-support

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REST API Client

Rest API Client offers a local API playground to build and test your APIs. It supports features like API Collections, Environments, Environment Switcher, API Requests History with a beautiful and collaborative interface.

⚡ A Local-first, Beautiful & Powerful alternative to Postman & Insomina ⚡

requestly-api-client

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Environments

Environment is a set of key-value pairs that can be used in API requests. Environments feature lets you manage variables across multiple environments with an easy environment selector. We support Global variables as well as Collection level variables. Docs

⚡ Environments feature ⚡

requestly-api-client-environments-support

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HTTP Interceptor / HTTP Rules (Intercept & Modify HTTPs Requests)

HTTP Rules feature can be used to Intercept, Monitor & Modify HTTPs requests & responses from browsers & mobile apps.

  • Use the Chrome/Firefox/Edge extension for Intercepting & Modifying traffic from browsers
  • Use the desktop app for capturing & modifying traffic from browsers, mobile apps & other desktop apps.

⚡ Intercept, Monitor & Modify HTTP Requests & Responses ⚡

requestly-http-interceptor

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Different Modifications supported

  • Redirect URLs (Map Local & Map Remote) e.g.
    • Change Hostname, QueryParams, etc in the URL
    • Redirect traffic from one environment to another (e.g. production to dev)
    • Swap Tag Manager scripts from production to staging/dev environment
  • Modify HTTP Request & Response Headers
  • Modify API Request & Response body
  • Inject scripts on web pages
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API Mocking (Helps in building frontend faster without waiting for backend)

Requestly offers a complete API Mocking solution. Using Requestly, you can

⚡ API Mocks - Build & Test your frontend faster without waiting for backend ⚡

requestly-api-mocking

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1-Click Imports

Requestly provides Importing Configuration from the following tools

API Clients

HTTP Interceptors

⚡ Import from Postman, Insomnia, CharlesProxy, ModHeader, etc. ⚡

requestly-api-client-environments-support

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🤝 Best In-Class Support

⚡ Requestly is known for best product, team and Best in-class support (4.3⭐️ in 1000+ reviews) ⚡

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👩‍💻 Development

This repository contains the source code for Browser extension and UI application which make up the core of Requestly.
Please follow the Getting Started Guide to get to know about the development process in this repository.

Start working on individual modules:

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🙏 Contributing

We welcome contributions from the community! Whether you're fixing bugs, adding new features, or improving documentation, your contributions help make Requestly better for everyone.

Getting Started:

Related Skills

View on GitHub
GitHub Stars6.6k
CategoryDevelopment
Updated1h ago
Forks633

Languages

TypeScript

Security Score

85/100

Audited on Apr 1, 2026

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