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API Tester

Chrome extension by AA · Productivity · Developer

A Chrome extension in Productivity · Developer with 25 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
25
Rating
not rated yet
Users, last 16 days
+2
Version
1.4
Updated in the store
2026-06-18
Published
2025-12-25
Manifest
V3
Browser access
4 permissions, 1 site pattern

How it has moved

Users
+2 since 31.08
22-26 · 9 readings
  1. 2026-08-3123
  2. 2026-09-0226
  3. 2026-09-0424
  4. 2026-09-0623
  5. 2026-09-0722
  6. 2026-09-0824
  7. 2026-09-1022
  8. 2026-09-1323
  9. 2026-09-1525
Users
+2 since 31.08
22-26 · 9 readings
  1. 2026-08-3123
  2. 2026-09-0226
  3. 2026-09-0424
  4. 2026-09-0623
  5. 2026-09-0722
  6. 2026-09-0824
  7. 2026-09-1022
  8. 2026-09-1323
  9. 2026-09-1525

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.

  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab
  • Open a panel beside the page sidePanel
Show the remaining 1
  • 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

AA publishes 4 listings we track, 80 users between them.

  1. Case Generator and Analysis Tool AA · Productivity · Tools · published 2025-10-17 34 users
  2. AI Calculator AA · Productivity · Tools · published 2025-07-28 10 users
  3. AI Form Filler AA · Productivity · Developer · published 2025-07-28 11 users

Like this one

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

  1. API Tester (Extension) Describes nearly the same job, smaller audience 14 users
  2. ApiTest Pro Describes nearly the same job, smaller audience 15 users
  3. API Buddy Describes nearly the same job, smaller audience 16 users
  4. RePostman Describes nearly the same job, smaller audience 724 users ★ 4.5
  5. TestAPI Tool Describes nearly the same job, smaller audience 35 users ★ 5.0

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.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

See what the panel does

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.