Firefox Browser Add-ons
Log in
Preview of httap

httap by rxliuli

Passively capture HTTP traffic matching your rules. Query like Cloudflare Logs.

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
About this extension
Capture HTTP traffic on sites you choose. Set rules to match specific hosts and URL patterns, then browse normally -- httap records matching Fetchand XHR requests in the background.

All captured requests are stored locally in your browser (IndexedDB). Nothing leaves your machine.

What you get:
- Rule-based capture using URLPattern syntax (e.g. api.example.com##://api.example.com/v1/)
- Log viewer with text and regex search
- Time range filtering with a histogram overview
- Request/response headers and body inspection
- Binary body download
- HAR 1.2 export

Useful for debugging API calls, inspecting third-party requests, or just keeping a log of network activity on specific sites without keeping DevTools open.
Rated 0 by 0 reviewers
Sign in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Optional permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Homepage
  • Copy add-on ID
Version
0.0.1
Size
345.71 KB
Last updated
5 days ago (Jun 25, 2026)
Related Categories
  • Web Development
License
GNU General Public License v3.0 only
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla’s homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Download

  • Download Firefox
  • Windows
  • macOS
  • iOS
  • Android
  • Linux
  • All

Latest Builds

  • Nightly
  • Beta

Firefox for Business

  • Enterprise

Community

  • Connect
  • Contribute
  • Developer

Follow

  • Instagram
  • YouTube
  • TikTok
  • Bluesky
  • Podcast
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.