trello_download_attachment
Downloads a specific attachment from a Trello card. For files uploaded directly to Trello, returns the content as base64-encoded data. For external links, returns the URL.
How to use it
trello_download_attachment is exposed by the Claude MCP Trello MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the trello_download_attachment tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.
FULL CLAUDE MCP TRELLO LISTINGOther tools in Claude MCP Trello (21)
The full attachment metadata
Size of the attachment in bytes (0 for external links)
Base64-encoded file content (for Trello uploads) or null (for external links)
ISO 8601 date string when the attachment was added
Filename of the attachment
Unique identifier for the attachment
Whether this is a Trello upload (true) or external link (false)
MIME type (e.g., "image/png", "application/pdf")
Display name of the attachment
Adds a card to the specified list.
Adds a new list to the specified board.
Archives (closes) the specified card.
Archives (closes) the specified list.
Retrieves all attachments from a specified card. Returns attachment metadata including name, file size, MIME type, and URL. Use this to discover what attachments exist on a card before downloading.
Retrieves a list of cards contained in the specified list ID.
Retrieves all lists in the specified board.
Retrieves all cards related to your account.
Retrieves the most recent activity for a specified board. The limit argument can specify how many to retrieve (default: 10).
Performs a cross-board search across all boards in the workspace (organization), depending on plan/permissions.
Updates the content of a card.
URL to access/download the attachment