Create a browser upload link for media files. ALWAYS use this when the user shares an image or video in chat — their file is local and cannot be passed directly to publish_content.
WORKFLOW:
1. Call this tool to get an uploadUrl
2. Give the user the link to open in their browser and upload their file
3. After upload, call get_upload_session to get the public media URL(s)
4. Use the returned URL with publish_content or schedule_content
Supports up to 20 files per session. Expires in 15 minutes.
Connector