1. "Read and change your data on a number of websites"
This directly applies to Amazon and SellerLabs.com sites. This allows Scope to display Chrome extension content on the page and overlay Scope data along with Amazon data. This specifically affects:
2. "Read your browsing history"
The Scope Chrome extension reads the current page to confirm a visit to Amazon.com.
This allows Scope to display additional content on Amazon and watch for searched keywords and products.
3. "Manage downloads"
This allows the Scope Chrome extension to offer CSV downloads of keyword search results.