Ensure Correct Permissions: Verify that the Copilot agent has the necessary permissions to access the SharePoint site. Check if you can access the wiki content through Microsoft Graph API, as this may offer better compatibility.
Use SharePoint API: Retrieve the wiki content using the SharePoint REST API or Graph API. Format the content into plain text or HTML and upload it to Copilot-compatible content storage.
Extract and Import: Manually copy the wiki content into a supported format, such as text documents, and add it to the Copilot agent through other supported storage like OneDrive or a CMS.