Check an idea before you build.
“Are there popular writing tools that haven’t been updated in a year?”
Ask your AI about
any extension.
Connect Claude, ChatGPT or Cursor to Ext Watch. Your AI looks up real Chrome Web Store numbers for you, and tells you the date we checked each one.
Included with Pro ($49/mo) and Max. Looks things up, never changes anything.
Your AI app
Which password managers have the most users right now?
Checking Ext Watch…
Here’s what Ext Watch saw in the store:
NordPass® Password Ma…≈9M+2 Oct 2026
Avira Password Manager≈8M+2 Oct 2026
LastPass: Free Passwo…≈8M+2 Oct 2026
Your AI, with
the store at hand.
No more pasting store pages into chat. Just ask, and your AI checks Ext Watch for you.
Keep an eye on competitors.
“Show the top 20 tab managers by users, and when you checked.”
Get answers you can trust.
Every number comes with its date. If we don’t know something, your AI hears “unknown”, not a guess.
Connect in
about a minute.
Pick your AI app and follow three short steps. You’ll sign in to Ext Watch once, and that’s it.
- 1Open Connectors
In Claude, go to Settings, then Connectors, and click Add custom connector.
- 2Paste the address
Name it Ext Watch and paste the server address below.
- 3Sign in and allow
Click Connect, sign in to Ext Watch and press Allow. Now just ask.
Server address
https://app.extwatch.com/api/mcpApp can’t sign in? Make a key in Settings, then API & MCP, and send it as Authorization: Bearer ew_live_…
What your AI
can look up.
Eight quick lookups in data we’ve already checked. Your AI picks the right one for your question.
Find extensions
Search by words, category, users, rating or how recently it was updated.
1 credit per 10 results
search_extensionsLook up one extension
Users, rating, what it can access, its versions and the numbers we’ve saved over time.
2 credits
get_extensionSee top lists
Most users, most ratings, fast starters, or not updated in a while. It always says how the list was made.
1 credit per 10 results
get_rankingsSpot new launches
Brand-new extensions, and a heads-up when there are only a few ratings so far.
1 credit per 10 results
get_new_launchesFind gaps
Ideas that pass our checks, how the score adds up, and whether a person has looked at it.
2 credits
get_opportunitiesOpen a collection
Our hand-picked lists, and why each extension is on them.
1 credit per 10 results
get_collectionCheck if it charges
Whether an extension asks for money, and where we saw it. If we can’t tell, it says so.
Coming soon
get_monetizationRead reviews
Written reviews, once we have a source we’re allowed to use. Until then it tells you.
Coming soon
list_reviewsCredits,
in plain words.
Each time your AI looks something up, it uses a few credits. Your plan gives you a fresh batch every month.
- A search or a list1 credit for every 10 results, up to 25 results at a time.
- One extension, in full2 credits.
- FreeConnecting, and anything that fails on our side.
- A daily limitSo one busy day can’t use up your whole month.
Pro
3,000credits a monthUp to 400 a day. That’s about 1,500 full extension lookups a month.
Max
15,000credits a monthUp to 2,000 a day. Room for a team or an AI helper that runs all day.
Comes with
Pro and Max.
Free and Plus are great for browsing. Pick Pro or Max when you want your AI to do the looking.
Pro
$49/month
- Connect Claude, ChatGPT or Cursor
- 3,000 credits a month
- Every ready tool
- Everything else in Pro
Max
$149/month
- Everything in Pro
- 15,000 credits a month
- Up to 2,000 credits a day
- Built for teams and busy AI helpers
Just browsing?
Free and Plus don’t include AI connections, but you can explore every page of the radar.
Compare all plansPaid plans aren’t open yet. Leave your email and we’ll tell you when they are.
Good to know.
What is MCP?
MCP is a standard way to plug extra tools into AI apps. Once you add Ext Watch, your AI can look up Chrome Web Store facts by itself instead of guessing.
Which AI apps work with it?
Claude (web, desktop and Claude Code), ChatGPT, Cursor, and most other apps that let you add an MCP server. If your app asks for a server address, paste https://app.extwatch.com/api/mcp.
Do I need to be a developer?
No. In Claude and ChatGPT you paste one address, sign in to Ext Watch and click Allow. That’s it.
Can my AI change anything in my account?
No. It can only look things up. It can’t edit, delete or buy anything, and you can disconnect it any time in Settings.
What happens when I run out of credits?
Your AI gets a friendly “out of credits” message instead of an answer. Credits refill each month, and nothing is charged on top.
How fresh is the data?
Every answer shows the date we last checked the store and the date of each number. We started recently, so we don’t talk about trends until we have enough history.
What if I downgrade?
Your connections stay saved, but lookups pause until you’re back on Pro or Max. Nothing is deleted.
