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XApi HTTP Client - API Tool, Modify Header & Response

Chrome extension by Senee Lu · Productivity · Developer

  • Established publisher

A Chrome extension in Productivity · Developer with 800 users, barely installed.

Every site you visit. This extension can read and change the content of any page you open.

What the developer says, and 3 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
800
Rating
not rated yet
Users, last 18 days
+8
Version
3.1.8
Updated in the store
2026-07-19
Published
2025-12-16
Manifest
V3
Browser access
6 permissions, 1 site pattern

How it has moved

Users
+8 since 31.08
792-811 · 10 readings
  1. 2026-08-31792
  2. 2026-09-03802
  3. 2026-09-04799
  4. 2026-09-05809
  5. 2026-09-07811
  6. 2026-09-08808
  7. 2026-09-10810
  8. 2026-09-13798
  9. 2026-09-15796
  10. 2026-09-17800
Users
+8 since 31.08
792-811 · 10 readings
  1. 2026-08-31792
  2. 2026-09-03802
  3. 2026-09-04799
  4. 2026-09-05809
  5. 2026-09-07811
  6. 2026-09-08808
  7. 2026-09-10810
  8. 2026-09-13798
  9. 2026-09-15796
  10. 2026-09-17800

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Every site you visit. This extension can read and change the content of any page you open.

  • Watch the network requests your browser makes webRequest
  • Block or redirect requests by rules it declares in advance declarativeNetRequest
  • See which of its blocking rules matched declarativeNetRequestFeedback
Show the remaining 3
  • Run its own code on the pages it can access scripting
  • Add items to the right-click menu contextMenus
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

Senee Lu publishes 4 listings we track, 965 users between them.

  1. Plex Code Editor Senee Lu · Productivity · Developer · published 2025-09-03 86 users
  2. Seecode: JSON Viewer & File Diff Tool Senee Lu · Productivity · Developer · published 2025-08-14 65 users
  3. Account Picker Senee Lu · Productivity · Developer · published 2025-09-29 14 users

Like this one

Listings the catalog judges closest in what they say they do.

  1. tweak: mock and modify HTTP requests Describes nearly the same job, with an established audience 80k users ★ 4.6
  2. API Pilot - FREE and Open Source API Interceptor, Mocker & Tester Describes nearly the same job, smaller audience 99 users ★ 5.0
  3. Requestly: Intercept & Modify HTTP Requests Describes nearly the same job, with a large installed audience 300k users ★ 4.5
  4. Request Proxy Describes nearly the same job, smaller audience 231 users ★ 5.0
  5. Header & Response Modifier Describes nearly the same job, smaller audience 6 users

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.