Upload an image to a Wix site's Media Manager.
Returns the uploaded file URL (wixstatic.com) and media ID usable in other Wix APIs.
⚠️ You MUST provide image data — calling this tool without image data will fail.
Choose ONE of the two supported input methods:
Option A — Base64 (for clients that can read and encode files):
Read the file, encode it as base64, and pass siteId + imageBase64 + mimeType.
Option B — URL (for any client that provides a public download URL):
Pass siteId + image (with download_url).
Connector