Agent unable to upload image that is not on a public URL via MCP

I have a flow where I send a photo of a receipt to an AI agent connected to the Fibery MCP. The agent then extracts info and creates entities in Fibery.

The issue I encountered is that the agent is unable to upload the image of the receipt as a file in Fibery via the MCP because it is not an image with a public download link.

Could you please fix this so that regular file upload of any private file is available via the MCP?