Marketplace Guardian
Chrome extension by Synthetic M2M · Lifestyle · Shopping
A Chrome extension in Lifestyle · Shopping with 4 users, barely installed. Audience over the last 30 days: -1.
Specific sites only: 1 match pattern.
What the developer says, and 4 screenshots
Loading from the Chrome Web Store. Open the listing if it does not appear.
- Users
- 4
- Users, last 30 days
- -1
- Rating, last 30 days
- Steady over 30 days
- Version
- 1.3.0
- Updated in the store
- 2026-06-18
- Published
- 2026-06-18
- Manifest
- V3
- Browser access
- 5 permissions, 1 site pattern
How it has moved
- 2026-10-096
- 2026-10-165
- 2026-10-186
- 2026-10-195
- 2026-10-216
- 2026-10-225
- 2026-10-246
- 2026-10-254
- 2026-10-314
- 2026-10-09reviews3
- 2026-10-16reviews3
- 2026-10-18reviews3
- 2026-10-19reviews3
- 2026-10-21reviews3
- 2026-10-22reviews3
- 2026-10-24reviews3
- 2026-10-25reviews3
- 2026-10-31reviews3
- 2026-09-014
- 2026-09-025
- 2026-09-054
- 2026-09-066
- 2026-09-075
- 2026-09-096
- 2026-09-105
- 2026-09-156
- 2026-09-175
- 2026-09-216
- 2026-09-225
- 2026-09-266
- 2026-09-285
- 2026-10-096
- 2026-10-165
- 2026-10-186
- 2026-10-195
- 2026-10-216
- 2026-10-225
- 2026-10-246
- 2026-10-254
- 2026-10-314
- 2026-09-01reviews3
- 2026-09-02reviews3
- 2026-09-05reviews3
- 2026-09-06reviews3
- 2026-09-07reviews3
- 2026-09-09reviews3
- 2026-09-10reviews3
- 2026-09-15reviews3
- 2026-09-17reviews3
- 2026-09-21reviews3
- 2026-09-22reviews3
- 2026-09-26reviews3
- 2026-09-28reviews3
- 2026-10-09reviews3
- 2026-10-16reviews3
- 2026-10-18reviews3
- 2026-10-19reviews3
- 2026-10-21reviews3
- 2026-10-22reviews3
- 2026-10-24reviews3
- 2026-10-25reviews3
- 2026-10-31reviews3
A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.
What it can reach
Specific sites only: 1 match pattern.
https://pu92fb49vg.execute-api.us-east-1.amazonaws.com/*
-
Run its own code on the pages it can access
scripting -
Act on the current tab, but only after you click it
activeTab -
Add items to the right-click menu
contextMenus
Show the remaining 2
-
Show you notifications
notifications -
Store data in your browser
storage
What changed recently
Nothing has moved on this listing since we started watching it.
The publisher
Synthetic M2M publishes 2 listings we track, 9 users between them.
-
VinBaba — Instant Car Value 5 users
Like this one
Listings the catalog judges closest in what they say they do.
-
Facebook Marketplace Scam Detector 13 users
-
Deal Scout — AI Buying Assistant for FB, eBay, Craigslist & OfferUp 37 users
-
MarketCheck 24 users
-
MarketLens: AI Deal Checker for Facebook Marketplace 8 users
-
Craigslist Scam Detector 4 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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Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.
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The badge shows the audience and rating from our last pass over the store and links back to this page.
[](https://extops.dev/extensions/fgbppmccphnfdoleihngnldngjigchhm)<a href="https://extops.dev/extensions/fgbppmccphnfdoleihngnldngjigchhm"><img src="https://extops.dev/extensions/fgbppmccphnfdoleihngnldngjigchhm/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-10-25. We publish no contact details for extension developers.