Before connecting a tool, ask for a practical explanation of what it reads, what it can change and how access ends. A demonstration should answer those questions with your account boundaries intact.
Inspect the proposed access
List every account connection and permission requested. Separate reading reports from writing listings, prices or bids. Ask which action is needed for the proposed work and which permissions can remain absent.
Amazon provides app authorization controls in Manage Your Apps in Seller Central. Amazon’s explanation of app authorization.
Ask for a traceable example
Choose a small, non-sensitive report excerpt. Ask the provider to show the source date, marketplace, identifiers and definitions used in its output. Check a calculation against the original rows. An attractive display is not a substitute for being able to reproduce a number.
Ask how the tool handles missing rows, repeated identifiers, changed source data and different currencies. Record unanswered questions before granting more access.
Plan the exit before the connection
Get the cancellation, access-revocation, data export and deletion process in writing. Check each connection separately and identify who will perform the steps. Keep a record of the access granted and the contact responsible for the tool.
Choose based on the work needed and the evidence supplied. Listing, price and A+ changes still need written OK, regardless of the tool used.