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Requestly
Requestly is an Open-Source HTTP Interception & Mocking Tool.
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Build frontend without waiting on the backend
Mock unreliable or undeveloped APIs instantly to unblock UI development.
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Test local JS changes on staging/production
Redirect live JS traffic to local JS bundles for quick and seamless testing.
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Simulate real-world API scenarios
Mimic real API behaviours - status codes, delays, headers—to reproduce issues and debug faster.
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Modify HTTP requests in E2E web testing
Enhance your debugging with detailed video recordings, console, network logs, and screenshots to quickly identify and resolve issues.
Popular Documents
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Getting started with Requestly
Learn to set up Requestly and modify web requests with examples.
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All HTTP modifications
Learn Requestly’s rule types to customize and control web requests.
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Redirect requests (JS/APIs)
Use Requestly's Redirect Rule for testing, debugging, and dev tasks.
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Modify API response
Modify API responses in Requestly to mock data and test edge cases.
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Modify request body
Set up rules for testing APIs, handling GraphQL, and debugging data.
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Modify HTTP headers
Modify HTTP headers in Requestly to debug, test, and customize APIs.
Quick Topics
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API mocking
Learn how to create mock API responses to speed up development and testing flow.
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Map Local & Remote
Use Map Local in Requestly to test local file changes as live responses.
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Modify requests in E2E web testing
Learn how to use Requestly in an E2E web testing framework.
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Android & iOS interception
Intercept and debug HTTP traffic on Android and iOS using Requestly.
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API client
Learn about Requestly's API Client for designing, testing, and managing APIs.
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Team collaboration
Learn how to invite teammates, manage roles, and collaborate in workspaces.
Developer Resources
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