Your API key authenticates requests to the Seller Assistant API on your account's behalf. This article covers generating, using, and managing it. For what you can do once you have a key, see What is API in Seller Assistant.
Generate API Key
Go to your personal Seller Assistant account and open API section from the Integrations page.
Click the "Generate API key" button, name the new key, and click "Generate".
Note
Amazon Seller Account must be connected to your Seller Assistant account.
Important
The API is not available during the trial period. A paid subscription is required to use the API.
Using API Key
Include your key in each request in one of two ways:
As a header – send it as
X-Api-Key.As a query parameter – append it to the request URL.
Your API key can also authenticate the Seller Assistant MCP Server, as an alternative to the browser approval. Pass it the same way, as an X-Api-Key header or query parameter.
Once you're close to using up your plan's API requests for the period (about 80%), a note appears at the top of the API Keys page showing how many more requests you can make. Once they're all used, the note says so. You will also see a Get more button there that takes you to upgrading your plan. Or you can buy add-on.
Revoking API Key
If you suspect a key has been compromised, or simply want to rotate it:
Create a new one. Copy and store it securely – it authenticates your requests going forward.
Select the old key and click "Delete" to revoke it. It is invalidated immediately.
Security Best Practices
Keep your API key confidential – treat it like a password.
Rotate your API key regularly to minimize the risk of unauthorized access.
Use secure connections – always use HTTPS.
Limit exposure – avoid exposing your API key in public repositories, client-side code, or unsecured environments.
To configure and integrate the API, read the documentation.