RequestCatcher.com Alternative: Capture HTTP Requests With Replay
Looking for a RequestCatcher.com alternative? Compare a free request catcher with persistent URLs, webhook catching, and request replay for local servers.
August 15, 2026 · 8 min read · MockFlow Team
What Is RequestCatcher.com?
RequestCatcher.com is a classic HTTP request catcher: you get a public URL, send a request to it, and inspect whatever arrived. That is still the right primitive when you are wiring a form, an SDK, or a webhook for the first time.
The limitation shows up the moment you need the URL to survive a closed tab, replay the payload to localhost, or return a custom body the provider will accept. That is when teams search for a RequestCatcher.com alternative.
Why Look for a Request Catcher Alternative?
- Temporary URLs expire, so Stripe or GitHub starts failing overnight.
- You can see a payload but cannot re-send it to your real handler.
- You need a webhook catcher and a mock API in the same project.
- You want a named workspace instead of a throwaway bin.
MockFlow vs RequestCatcher.com
| Capability | RequestCatcher.com | MockFlow.io |
|---|---|---|
| Public request catcher URL | Yes, often temporary | Yes, tied to your account |
| Webhook catcher | Works if the provider can POST | Built for Stripe, GitHub, and SaaS webhooks |
| Replay to localhost | No | Yes |
| Custom response body | Limited | Per catcher |
| Mock API server | No | Same project |
When to Switch
Stay on a disposable catcher if you need a 30-second experiment and will throw the URL away. Switch when the provider will keep sending events, when a teammate needs the same URL, or when you are ready to replay captured HTTP into a local handler.
Create a free MockFlow account, open a project, and add a Request Catcher. Paste the HTTPS URL into the provider. The inspector shows method, headers, parsed JSON, raw body, query string, and IP. Replay forwards that exact request to any target URL.
FAQ
Do I need an account?
Yes for a public request catcher. A URL that receives traffic from the internet cannot live in browser localStorage. Guest mode is still available for in-browser mock APIs.
Is this a webhook catcher too?
Yes. The same MockFlow URL is a request catcher and a webhook catcher.
Create a free Request Catcher
Persistent URL, webhook catching, and replay — without a throwaway bin.