MCP-B Agent
Chrome extension by webmcp · Productivity · Tools
- Established publisher
A Chrome extension in Productivity · Tools with 1 000 users, a small but real audience. Audience over the last 30 days: unchanged.
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
- 1 000
- Users, last 30 days
- Unchanged (the store rounds this count to 1 000, so it moves only between steps)
- Rating, last 30 days
- Steady over 30 days
- Version
- 1.1.0.243
- Updated in the store
- 2026-07-29
- Published
- 2025-06-24
- Manifest
- V3
- Browser access
- 23 permissions, 1 site pattern
How it has moved
- 2026-10-08987
- 2026-10-091k
- 2026-10-291k
- 2026-10-08reviews8
- 2026-10-09reviews8
- 2026-10-29reviews8
- 2026-09-011k
- 2026-10-08987
- 2026-10-091k
- 2026-10-291k
- 2026-09-01reviews8
- 2026-10-08reviews8
- 2026-10-09reviews8
- 2026-10-29reviews8
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
Every site you visit. This extension can read and change the content of any page you open.
-
Read what you have copied
clipboardRead -
Attach to pages the way developer tools do
debugger -
Read and change your browsing history
history
Show the remaining 20
-
See the address and title of every tab you have open
tabs -
Read and change your bookmarks
bookmarks -
Block or redirect requests on the sites it can access
declarativeNetRequestWithHostAccess -
Manage your downloads
downloads -
Sign you in with a Google account
identity -
See the email address of the signed-in Google account
identity.email -
Run its own code on the pages it can access
scripting -
See and restore recently closed tabs
sessions -
See the sites you visit most
topSites -
See when you navigate between pages
webNavigation -
Act on the current tab, but only after you click it
activeTab -
Schedule work to run later
alarms -
Put data on your clipboard
clipboardWrite -
Run work in a hidden page
offscreen -
Run searches in your default search engine
search -
Open a panel beside the page
sidePanel -
Store data in your browser
storage -
Organise your tabs into groups
tabGroups -
Store data in your browser without the usual size limit
unlimitedStorage -
Declares
userScripts
What changed recently
Nothing has moved on this listing since we started watching it.
The publisher
webmcp publishes 2 listings we track, 1k users between them. Listed website: mcp-b.ai.
-
Rook 79 users
Like this one
Listings the catalog judges closest in what they say they do.
-
Oni3 3 users
-
airminal 5 users
-
Personal Agent 3 users (last published figure)
-
Ruminer Browser Agent 24 users
-
HelperAI 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.
Want this mark on your extension in our catalog?
Verify that you are its author and you can show this mark on the card, with live banners for your site and README. How verification works
Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.
Add a badge to your README or site
The badge shows the audience and rating from our last pass over the store and links back to this page.
[](https://extops.dev/extensions/daohopfhkdelnpemnhlekblhnikhdhfa)<a href="https://extops.dev/extensions/daohopfhkdelnpemnhlekblhnikhdhfa"><img src="https://extops.dev/extensions/daohopfhkdelnpemnhlekblhnikhdhfa/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 2026-10-09. We publish no contact details for extension developers.