Firefox Add-ons Scraper: Extension Users & Ratings (AMO)

Export Firefox add-on data for $1.00 per 1,000 add-ons, plus $0.00005 per start. Silver: $0.90 per 1,000; Gold: $0.80 per 1,000.

Search Mozilla's public AMO API or look up add-ons by ID, slug or URL. Results include daily users, ratings, review counts, versions, permissions, categories and developer names.

Browse a category or export results as JSON, CSV or Excel for extension research and analysis.

Quick start

1. Press Start. The form is already filled with this example input, so the first run returns real rows in under a minute:

{
  "searchQueries": [
    "password manager"
  ],
  "maxResultsPerQuery": 25
}

2. Swap in your own values, or call the Actor through the Apify API, Make, Zapier, n8n or the Python/JS clients with the same JSON.
3. Download the results as JSON, CSV or Excel from the Output tab, or schedule the run to repeat.

Example inputs

Search for add-ons:

{
  "searchQueries": ["password manager"],
  "maxResultsPerQuery": 25
}

Look up specific add-ons by slug or URL:

{
  "addons": ["ublock-origin", "https://addons.mozilla.org/en-US/firefox/addon/bitwarden-password-manager/"]
}

Browse a category:

{
  "category": "privacy-security",
  "maxResultsPerQuery": 50
}

Sample row (real run, trimmed)

{
  "query": "password manager",
  "name": "Bitwarden Password Manager",
  "dailyUsers": 1022540,
  "weeklyDownloads": 30116,
  "rating": 4.58,
  "ratingCount": 9371,
  "categories": [
    "privacy-security"
  ],
  "developers": [
    "Bitwarden Inc."
  ],
  "version": "2026.10.0",
  "lastUpdated": "2026-10-15T15:46:54Z",
  "permissions": [
    "<all_urls>",
    "*://*/*",
    "alarms",
    "clipboardRead",
    "clipboardWrite"
  ],
  "url": "https://addons.mozilla.org/en-US/firefox/addon/bitwarden-password-manager/"
}

Other fields: add-on ID, slug, GUID, type, summary, weekly downloads, review count, tags, file size, minimum Firefox version, optional and host permissions, license, recommended badge, homepage, support link, created date, icon and full description (optional).

Who uses this

• Extension developers: compare your users and rating with rivals on Firefox.
• Security teams: audit permissions of add-ons your company allows.
• Analysts: rank categories by users and growth.

How to use it

1. Add search keywords, add-on IDs/slugs/URLs, or just pick a category to browse.
2. Choose a type (extension, theme, dictionary, language pack) and a sort.
3. Set max results per keyword and run.

Input fields

Field	Type	What it does
searchQueries	array	Keywords, like the addons.mozilla.org search box.
addons	array	Optional slugs, URLs, numeric IDs or GUIDs to look up directly.
category	string	Optional category slug such as privacy-security. With no keywords, browses the whole category.
addonType	string	What to search (default: extension).
sort	string	Result order (default: relevance).
includeDescription	boolean	Include the full add-on description (up to 3,000 characters). The summary is always included.
maxResultsPerQuery	integer	Cap per keyword. 0 = all matches.
maxResults	integer	Safety cap on saved results for the whole run. 0 = no cap.
proxyConfiguration	object	Usually not needed.

Output fields

Typical fields on each saved row (see the sample above):

Field	Meaning
query	The search or lookup that produced the row.
name	Add-on display name.
dailyUsers	Mozilla's public daily-user figure.
weeklyDownloads	Weekly downloads, when published.
rating	Average rating.
ratingCount	Number of ratings.
categories	AMO categories.
developers	Public developer names (no emails).
version	Current version.
lastUpdated	Last update date.
permissions	Permissions reported by Mozilla's public API.
url	Public AMO listing URL.

Run through the API

Replace YOUR_TOKEN with your Apify API token. You are charged only for saved rows, at the prices in the Pricing section below.

curl "https://api.apify.com/v2/acts/mrslm_data~firefox-addons/run-sync-get-dataset-items?token=YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"searchQueries": ["password manager"], "maxResultsPerQuery": 25}'

import requests

r = requests.post(
    "https://api.apify.com/v2/acts/mrslm_data~firefox-addons/run-sync-get-dataset-items",
    params={"token": "YOUR_TOKEN"},
    json={'searchQueries': ['password manager'], 'maxResultsPerQuery': 25},
    timeout=300,
)
r.raise_for_status()
rows = r.json()

What a run costs (example)

What you save	Unit price (Free/Bronze)	Example
1,000 add-ons saved	$1.00	$1.00
Actor start fee	$0.00005 per run	$0.00005
Total for that example		$1.00005

Silver and Gold unit prices are listed in the Pricing section below. Failed or skipped targets are free.

Pricing

• Add-on: $1.00 per 1,000 (Silver $0.90, Gold $0.80)
• Plus $0.00005 per run. Failed or skipped targets are free.

FAQ

Where does the data come from? Mozilla's public add-ons API, the same data addons.mozilla.org shows.

Are developer emails included? No. Only public developer names.

Can I look up a specific Firefox add-on? Yes. Supply an add-on ID, slug or Mozilla Add-ons URL in the addons input.

Does the output include extension permissions? Yes. The output can include permissions reported by Mozilla's public API.

Which export formats are available? You can download results from Apify as JSON, CSV or Excel.

Related scrapers

• Chrome Web Store Scraper: Extension Permissions & Users
• WordPress Plugin Scraper: Stats, Installs & Reviews
• JetBrains Marketplace Scraper: IDE Plugins, Downloads

Is it legal?

This Actor only reads pages and feeds that the website itself publishes to every visitor without a login. It obeys each site's robots.txt, keeps a polite request rate, and never tries to get past logins, paywalls, captchas or bot checks. It does not collect personal data such as emails, phone numbers or names of private individuals. You are responsible for how you use the data: follow the source site's terms, copyright and the privacy laws that apply to you (GDPR, CCPA, etc.). This tool is independent and not affiliated with or endorsed by the platforms it reads.