Post Request Sniffer
exposes post requests , e.g. to https://postpen.requestcatcher.com
Warning: Use this with care. Your login Data can get exposed to the internet.
https://github.com/Jochnickel/mozilla_postpen/tree/sniffer
Post Request Sniffer - Firefox Add-on
Post Request Sniffer is a Firefox add-on that exposes post requests and allows for monitoring and capturing of HTTP data. Use with caution as login data can be exposed to the internet.
Add-on stats
Weekly download count: 5
Firefox on Android: No
Risk impact: High risk impact 
Risk likelihood:
Manifest version: 2
Permissions:
- storage
- webRequest
- webRequestBlocking
- <all_urls>
Size: 10.24K
URLs: Website
Ranking
Other platforms
Not available on Chrome
Not available on Android
Not available on Edge
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User reviews
Does what it says, though it a pretty brutal way!
It captures all your JSON requests and sends them to a given URL, like the proposed RequestCatcher. No wonder it warns you that your data "can get exposed"!!
Surely can be helpful, but I was thinking it'd be something more local than that.
by hmijail, 2022-01-24
Add-on safety
Risk impact
Post Request Sniffer requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk likelihood
Post Request Sniffer has earned a fairly good reputation and likely can be trusted.
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