Open-Source HTTP Interceptor – Capture, Modify, Run Requests in Browser
Hey HN, I recently built an open-source HTTP interceptor called Relay, which works as a Chrome extension for capturing, modifying, and replaying HTTP requests directly in your browser — no account needed. How it works: Relay lets you capture requests as they happen, modify parameters, headers, or body content, and replay them on the fly. You can customize or debug network requests quickly without needing an external tool or complex setup. Key features: - Simple setup: Install the extension and start a session to capture requests. You can filter by URLs and methods. -Request modification:…
What it does
In the maker’s words, at launch
Hey HN, I recently built an open-source HTTP interceptor called Relay, which works as a Chrome extension for capturing, modifying, and replaying HTTP requests directly in your browser — no account needed. How it works: Relay lets you capture requests as they happen, modify parameters, headers, or body content, and replay them on the fly. You can customize or debug network requests quickly without needing an external tool or complex setup. Key features: - Simple setup: Install the extension and start a session to capture requests. You can filter by URLs and methods. -Request modification: Make quick edits to any part of the requests for debugging or testing. - Copy as cURL: Easily copy requests as cURL commands to use elsewhere if needed. - Replay functionality: Re-run requests with modified data or headers and see the results in your browser. - Local, no account needed: All interactions are handled locally in your browser, so you maintain privacy and control over your data. I built Relay to make tasks like testing API integrations, troubleshooting network calls, and experimenting with client-side requests easier. Originally, I made it for myself because I wanted a faster way to look at and edit network requests without constantly switching between my browser and other tools. After seeing how useful it was, I decided to make it open-source for anyone who would find it useful. Here's the GitHub repo: https://git.new/relay Would love to hear your feedback and suggestions!
Does the same job
all alternatives →- IRIntercept.rest – Faster API debugging2018 · ▲89
Sharing an internal tool that accelerated my development work 10-fold, especially with API debugging. Thought fellow developers here might find it useful. As a developer, I often have trouble reproducing errors at the client end. https://intercept.rest lets me debug and monitor API requests and responses. It is similar to the Network tab in Chrome Developer Tools but works for any API: mobile apps, webhooks, frontend etc. After I shared it with a close circle of friends, they found it incredibly useful and even found new use cases, I never imagined. Been a long time lurker here and…
- HMHTTP Mock – Intercept, debug and mock HTTP(S) with zero setup2019 · httptoolkit.tech · ▲341
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