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 run

Example results

Size: 16.87MiB
Version: 14.1333.0
Category: Communication
Developer: Grammarly
Store Link: chromewebstore.google.com
Permissions: Not provided
Star Rating: 4.5
Extension ID: kbfnbcaeplbcioakkpcpgfkobkghlhen
Rating Count: 43,131
Website Link: grammarly.com
Extension Name: Grammarly: AI Writing Assistant and Grammar Checker App
Number of Users: 40,000,000
Last Updated Date: 2026-09-28
Short Description: Grammarly for Chrome helps you write with confidence. Get AI support for grammar, clarity, and tone, from first draft to final edit.
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.
The developer declares that your data is not being used or transferred to determine creditworthiness or for lending purposes.

Example data · Run in Studio for fresh results.

About Chrome Web Store

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 by Fous from chromewebstore.google.com and checked automatically; it last passed a check on Sep 29, 2026. Fous is not affiliated with Chrome Web Store.

Actions

Get extension

1 credit per run

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 per run

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
Extensions`extensions`	List
Name`extensions[].name`	Text
Developer`extensions[].developer`	Text
Store Link`extensions[].store_link`	Text
Star Rating`extensions[].star_rating`	Number
Extension ID`extensions[].extension_id`	Text
Rating Count`extensions[].rating_count`	Number
Number of Users`extensions[].number_of_users`	Number
Short Description`extensions[].short_description`	Text

Example result

For Query: zxqvnonexistent123456789zz, Max Results: 20

JSON

{
  "extensions": []
}

For developers

Run this workflow from your own code. In Studio, turn on Developer mode and create an API key.

cURL

# First set your key: export FOUS_API_KEY='YOUR_FOUS_API_KEY'
: "${FOUS_API_KEY:?Set FOUS_API_KEY before running this example}"

curl 'https://api.fous.com/v1/query' \
  --fail-with-body --silent --show-error --max-time 120 \
  -H "Authorization: Bearer $FOUS_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

Is Fous affiliated with Chrome Web Store?

No. Fous is not affiliated with Chrome Web Store. This workflow reads the public chromewebstore.google.com website and returns its data.

How much does it cost?

Each run costs 1 credit. 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; repeating the same request within a day may return the saved result. Fous checks this workflow automatically; it last passed a check on Sep 29, 2026.