# Mastery Lookup

> Adds a link to see users Mastery Points from OP.gg

Canonical page: [https://chrome-stats.com/d/mastery-lookup](https://chrome-stats.com/d/mastery-lookup)

## Overview

- **ID:** `mastery-lookup`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Michael
- **Category:** appearance,bookmarks
- **Version:** 1.6.0
- **Last updated:** 2024-02-19
- **First published:** 2020-04-03
- **Size:** 54 KB
- **Data as of:** 2026-09-12
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/mastery-lookup/)

## Description

Mastery Lookup is a Firefox add-on that provides a convenient link to view users' Mastery Points on OP.gg. Simplify your search for players' achievements and performance in this easy-to-use tool.

## Rankings

- #143,614 — Overall
- #127 — lookup

## Permissions and access

### Content script matches

- `www.op.gg`

## Safety

- **Risk impact:** Low risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/mastery-lookup)