What is Requestly?

Requestly is a local-first, lightweight developer toolkit designed to streamline API development, testing, and debugging workflows. It offers a powerful HTTP interceptor to modify, mock, and debug network requests directly from your browser. The platform includes an API client for development and testing, supports API mocking with GraphQL, and enables cross-device testing. With a strong emphasis on privacy, Requestly lets you stay local with Git, sync instantly with Team Projects, or Self-Host for total data sovereignty—no login required and no cloud lock-in.

Who it's for

• Frontend developers who need to simulate backend responses and override scripts to build interfaces faster without waiting for APIs.
• QA engineers who require robust API mocking and HTTP interception to test edge cases, modify headers, and validate behavior across environments.
• Support teams who rely on debugging network requests and inspecting live traffic to troubleshoot issues reported by users.

Key features

HTTP Interception

Intercept and modify HTTP requests and responses in real time. Redirect URLs, modify HTTP headers, mock API or GraphQL responses, and insert custom JavaScript scripts—all directly from your browser.

API Client with Local-First Storage

Build, test, and sync APIs your way. Organize API collections and environments locally, import from Postman, OpenAPI, or cURL, and keep everything under your control with no cloud dependency.

GraphQL Support

Test GraphQL endpoints with an intelligent client featuring schema introspection and auto-completion. This makes it easy to explore and debug GraphQL APIs without switching tools.

Collaboration and Git Sync

Work with teammates in shared workspaces, sync API collections with a Git repository, and assign Admin, Editor, or Viewer roles. Role-based access control ensures precise permissions across your team.

What stands out

Build frontend faster without waiting for backend.

This one-liner captures Requestly's core value: it eliminates backend dependencies during frontend development. By mocking API responses and intercepting network traffic, developers can simulate any scenario instantly. Combined with complete data sovereignty—local, team sync, or self-hosted—and flat, predictable pricing free for up to 10 collaborators, Requestly offers a privacy-first alternative to cloud-bound tools.

Worth checking out if…

You're a developer or QA engineer tired of cloud lock-in and want a lightweight, privacy-first API client that works offline. Requestly is especially valuable if you need to mock APIs, intercept HTTP traffic, or collaborate with a small team without hidden costs. It's also a strong choice for anyone migrating from Postman or similar tools, thanks to easy import from multiple sources.