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Requestly Interceptor helps you inspect and modify network traffic in real time. You can debug browser requests, intercept mobile and desktop app traffic, rewrite requests and responses, create mocks, and share debugging sessions with your team.

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Choose Your Path

Debug Browser Traffic

Use the Browser Extension when you want to inspect and modify traffic in the browser.

Debug Mobile Or Desktop Traffic

Use the Desktop App when you need proxy-based interception for mobile apps, emulators, terminal tools, or system traffic.

Modify Or Mock Traffic

Rewrite headers, bodies, query params, and responses without changing your application code.

Create Mocks

Build reusable mock APIs and hosted responses for testing, demos, and collaboration.

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Understand The Product Areas

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Debugging & Interception

Use the HTTP Interceptor when you need to inspect live traffic from a browser, desktop app, mobile device, emulator, terminal, or Node.js runtime.

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Modify Traffic

Use HTTP Rules to modify headers, redirect requests, rewrite bodies, delay responses, inject scripts, or map requests to local and remote resources.

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Mock APIs & Responses

Use API Mocking and File Server to simulate backend behavior for development, testing, demos, and failure scenarios.

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Which Setup Should You Choose?

Choose the Browser Extension when:
  • you only need browser-based workflows
  • you want quick setup with no system proxy configuration
  • you plan to inspect traffic, create rules, or work from the extension popup

Set Up Browser Extension

Install the extension, understand the interface, and learn what it can do.
Still deciding? Read how the Browser Extension differs from the Desktop App.
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Choose Browser Extension Or Desktop App

If you only need browser-based traffic tools, start with the Browser Extension. If you need to intercept mobile apps, emulators, localhost traffic, or system-wide traffic, use the Desktop App.
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Complete Setup

Follow either the Browser Extension setup or Desktop App setup guide.
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Reach Your First Success

Pick one clear first task:
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Go Deeper Once The Basics Work

After your first successful task, explore sessions, collaboration, advanced rules, and mock scenarios.

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Common Journeys

Modify Headers Or Redirect Requests

Start with HTTP Rules if you need to change traffic without updating application code.

Inspect Browser Or App Traffic

Start with HTTP Interceptor if you need to see live network traffic and trace issues.

Record And Share Debug Sessions

Start with Sessions if you need reproducible bug reports or sharable network captures.

Simulate Backend Behavior

Start with File Server when you need stable responses for testing or demos.

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Next Steps

Troubleshoot Setup

Get help with certificate, localhost, proxy, and device interception issues.

Public APIs

Automate Requestly Interceptor workflows programmatically.