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Mock Express - Modify, Mock & Intercept HTTP Requests Locally

Chrome extension by Anirudh · Productivity · Developer

  • Established publisher

A Chrome extension in Productivity · Developer with 446 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 5 screenshots

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

Users
446
Rating
5.0 (10 ratings)
Users, last 15 days
+24
Rating, last 30 days
Not watched long enough to say
Version
4.0.1
Updated in the store
2026-06-29
Published
2025-07-29
Manifest
V3
Browser access
7 permissions, 1 site pattern

How it has moved

Users
+24 since 01.09
422-446 · 8 readings
  1. 2026-09-01422
  2. 2026-09-03425
  3. 2026-09-04426
  4. 2026-09-06429
  5. 2026-09-07432
  6. 2026-09-09439
  7. 2026-09-13438
  8. 2026-09-15446
Rating
unchanged since 01.09
reviewsrating 5.00 · 8 readings
  1. 2026-09-01reviews10rating5.00
  2. 2026-09-03reviews10rating5.00
  3. 2026-09-04reviews10rating5.00
  4. 2026-09-06reviews10rating5.00
  5. 2026-09-07reviews10rating5.00
  6. 2026-09-09reviews10rating5.00
  7. 2026-09-13reviews10rating5.00
  8. 2026-09-15reviews10rating5.00
Users
+24 since 01.09
422-446 · 8 readings
  1. 2026-09-01422
  2. 2026-09-03425
  3. 2026-09-04426
  4. 2026-09-06429
  5. 2026-09-07432
  6. 2026-09-09439
  7. 2026-09-13438
  8. 2026-09-15446
Rating
unchanged since 01.09
reviewsrating 5.00 · 8 readings
  1. 2026-09-01reviews10rating5.00
  2. 2026-09-03reviews10rating5.00
  3. 2026-09-04reviews10rating5.00
  4. 2026-09-06reviews10rating5.00
  5. 2026-09-07reviews10rating5.00
  6. 2026-09-09reviews10rating5.00
  7. 2026-09-13reviews10rating5.00
  8. 2026-09-15reviews10rating5.00

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.

  • See the address and title of every tab you have open tabs
  • Watch the network requests your browser makes webRequest
  • Block or redirect requests by rules it declares in advance declarativeNetRequest
Show the remaining 4
  • Schedule work to run later alarms
  • Add items to the right-click menu contextMenus
  • Store data in your browser storage
  • Store data in your browser without the usual size limit unlimitedStorage

The full permission history for this extension

What changed recently

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

The publisher

Anirudh. Listed website: mockexpress.com.

Like this one

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

  1. Mocktail: Mock API & Modify Requests Describes nearly the same job, smaller audience 17 users ★ 5.0
  2. Moq - Mock API Requests Describes nearly the same job, smaller audience 318 users ★ 5.0
  3. Reqix – API Mock & HTTP Request Modifier Describes nearly the same job, smaller audience 6 users
  4. Intercepta: modify and mock HTTP requests Describes nearly the same job, smaller audience 36 users ★ 5.0
  5. API Interceptor - Mock API Responses & Intercept HTTP Requests Describes nearly the same job, smaller audience 370 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.