Chrome Web Store

Developer tools chromewebstore.google.com

Chrome extensions, extension listings and extension ratings

Chrome Web Store finds extensions by keywords or name and returns public listing details, with some listings omitting developer, user, or rating information.

Get extension

Look up a Chrome Web Store extension by name or store link and return its public listing details. Permissions are null when not displayed on the listing.

Your information

Extension

Extension name or Chrome Web Store link, for example Grammarly or https://chromewebstore.google.com/detail/grammarly-ai-writing-assi/kbfnbcaeplbcioakkpcpgfkobkghlhen.

1 credit per completed run

The same inputs also work from your code or an AI assistant. See For developers.

Example results

Grammarly: AI Writing Assistant and Grammar Checker App

Grammarly for Chrome helps you write with confidence. Get AI support for grammar, clarity, and tone, from first draft to final edit.

4.5(43.1K)

Users40M

Developer: Grammarly
Category: Communication
Version: 14.1333.0
Last updated: Sep 28, 2026
Download size: 16.87MiB

View in Chrome Web Store Developer website

Privacy practices

About the Chrome Web Store tool

Chrome Web Store (CWS) returns public listing details for an extension found by name or store link.

Search extensions finds extensions by keywords and returns listing details; it needs a search query, with an optional maximum result count.

Built from chromewebstore.google.com. Last checked Sep 29, 2026.

Actions

Get extension

1 credit

Look up a Chrome Web Store extension by name or store link and return its public listing details. Permissions are null when not displayed on the listing.

What you provide

Field	Type	Required	Description
Extension`extension`	Text	Required	Extension name or Chrome Web Store link, for example Grammarly or https://chromewebstore.google.com/detail/grammarly-ai-writing-assi/kbfnbcaeplbcioakkpcpgfkobkghlhen.Example: Grammarly

What you get

Field	Type	Description
Size`size`	Text	Download size as shown on the listing.Example: 16.87MiB
Version`version`	Text	Published version.Example: 14.1333.0
Category`category`	Text	Store category.Example: Communication
Developer`developer`	Text	Publisher name shown on the listing.Example: Grammarly
Store Link`store_link`	Text	Link to this Chrome Web Store listing.Example: https://chromewebstore.google.com/detail/grammarly-ai-writing-assi/kbfnbcaeplbc…
Permissions`permissions`	List	Permissions requested when displayed on the listing; null when absent.
Star Rating`star_rating`	Number	Displayed star rating out of five.Example: 4.5
Extension ID`extension_id`	Text	32-letter Chrome extension identifier.Example: Kbfnbcaeplbcioakkpcpgfkobkghlhen
Rating Count`rating_count`	Number	Number of user ratings.Example: 43131
Website Link`website_link`	Text	Publisher website, if listed.Example: http://grammarly.com/
Extension Name`extension_name`	Text	Name of the extension.Example: Grammarly: AI Writing Assistant and Grammar Checker App
Number of Users`number_of_users`	Number	Number of users shown on the listing.Example: 40000000
Last Updated Date`last_updated_date`	Date	Last updated date in YYYY-MM-DD format.Example: 2026-09-28
Privacy Practices`privacy_practices`	List	Plain sentences describing declared data handling practices.
Short Description`short_description`	Text	Short listing description.Example: Grammarly for Chrome helps you write with confidence. Get AI support for…

Example result

For Extension: Grammarly

JSON

{
  "size": "16.87MiB",
  "version": "14.1333.0",
  "category": "Communication",
  "developer": "Grammarly",
  "store_link": "https://chromewebstore.google.com/detail/grammarly-ai-writing-assi/kbfnbcaeplbcioakkpcpgfkobkghlhen",
  "permissions": null,
  "star_rating": 4.5,
  "extension_id": "kbfnbcaeplbcioakkpcpgfkobkghlhen",
  "rating_count": 43131,
  "website_link": "http://grammarly.com/",
  "extension_name": "Grammarly: AI Writing Assistant and Grammar Checker App",
  "number_of_users": 40000000,
  "last_updated_date": "2026-09-28",
  "privacy_practices": [
    "The developer declares that this extension handles personally identifiable information, personal communications, location, user activity, website content.",
    "The developer declares that your data is not being sold to third parties, outside of the approved use cases.",
    "The developer declares that your data is not being used or transferred for purposes that are unrelated to the item's core functionality."
  ],
  "short_description": "Grammarly for Chrome helps you write with confidence. Get AI support for grammar, clarity, and tone, from first draft to final edit."
}

Search extensions

1 credit

Find Chrome browser extensions by keywords in store order, with listing details. Some listings omit developer, users or ratings.

What you provide

Field	Type	Required	Description
Query`query`	Text	Required	Words to search for, for example password manager.Example: password manager
Max Results`max_results`	Number	Optional	Most extensions to return, for example 20.Example: 23

What you get

Field	Type	Description
Extensions`extensions`	List
Name`extensions[].name`	Text	Example: LastPass: Free Password Manager
Developer`extensions[].developer`	Text	Example: LastPass
Store Link`extensions[].store_link`	Text	Example: https://chromewebstore.google.com/detail/lastpass-free-password-ma/hdokiejnpima…
Star Rating`extensions[].star_rating`	Number	Example: 4.2
Extension ID`extensions[].extension_id`	Text	Example: Hdokiejnpimakedhajhdlcegeplioahd
Rating Count`extensions[].rating_count`	Number	Example: 28477
Number of Users`extensions[].number_of_users`	Number	Example: 8000000
Short Description`extensions[].short_description`	Text	Example: LastPass is an award-winning password manager for secure credential management…

Example result

For Query: password manager

JSON

{
  "extensions": [
    {
      "name": "LastPass: Free Password Manager",
      "developer": "LastPass",
      "store_link": "https://chromewebstore.google.com/detail/lastpass-free-password-ma/hdokiejnpimakedhajhdlcegeplioahd",
      "star_rating": 4.2,
      "extension_id": "hdokiejnpimakedhajhdlcegeplioahd",
      "rating_count": 28477,
      "number_of_users": 8000000,
      "short_description": "LastPass is an award-winning password manager for secure credential management on any device."
    },
    {
      "name": "Keeper® Password Manager & Digital Vault",
      "developer": "Keeper Security, Inc.",
      "store_link": "https://chromewebstore.google.com/detail/keeper®-password-manager/bfogiafebfohielmmehodmfbbebbbpei",
      "star_rating": 4.8,
      "extension_id": "bfogiafebfohielmmehodmfbbebbbpei",
      "rating_count": 8534,
      "number_of_users": 2000000,
      "short_description": "Generate strong passwords, autofill and protect your confidential info with zero-knowledge encryption."
    },
    {
      "name": "Bitwarden Password Manager",
      "developer": "Bitwarden Inc.",
      "store_link": "https://chromewebstore.google.com/detail/bitwarden-password-manage/nngceckbapebfimnlniiiahkandclblb",
      "star_rating": 4.3,
      "extension_id": "nngceckbapebfimnlniiiahkandclblb",
      "rating_count": 8029,
      "number_of_users": 7000000,
      "short_description": "At home, at work, or on the go, Bitwarden easily secures all your passwords, passkeys, and sensitive information"
    }
  ]
}

For developers

Call it from your code with one request. Change the values in input to run it on new data. To get an API key, open Developers at the bottom of Studio, turn on Developer mode and go to API keys.

cURL

curl 'https://api.fous.com/v1/query' \
  --fail-with-body --silent --show-error --max-time 180 \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H 'Content-Type: application/json' \
  --data-raw '{
  "api": "@chrome-web-store",
  "visibility": "public",
  "operation": "get_extension",
  "version": 1,
  "input": {
    "extension": "Grammarly"
  },
  "response": {
    "format": "json"
  }
}'

What you can do with it

Compare extension ratings and user counts
Review listed extension permissions
Find extensions by keyword
Check an extension’s version and update date
Review publishers and declared privacy practices

Questions about Chrome Web Store

Can I run it with my own inputs?

Yes. Change the inputs in Studio and press Run, or send new inputs from your code, or ask a connected AI assistant.

Can I call this Chrome Web Store tool as an API?

Yes. Send a POST request to /v1/query with your Fous API key and the inputs, and get JSON back.

How much does it cost?

Each completed run costs 1 credit. Failed runs without a completed receipt are free; completed work can remain charged if delivery is interrupted. With pay as you go, a credit costs 1¢. Monthly plans cost less per credit.

Do I need a Chrome Web Store account?

No. You only need a Fous account.

How current is the data?

Fous gets the data from chromewebstore.google.com when you run it. Some results are reused for up to 24 hours, and results that use your account or key are never reused. It was last verified on Sep 29, 2026.