create_card

What create_card does on Trello MCP Server

AI agents use create_card to create or update resources in Trello MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Trello MCP Server environment.

Why create_card is rated Medium

Creating cards in Trello is a reversible write operation that modifies the board state by adding new data. It has moderate blast radius—an agent could spam cards or create unwanted organizational chaos—but the action can be undone (cards can be deleted). This is less severe than destructive actions (which cannot be reversed) or execute actions (which run arbitrary code), but more severe than simple read operations.

From the tool's definition Tool name 'create_card' and server description stating 'supports full CRUD operations' and 'create_cards' (plural variant listed as sibling tool) indicates card creation capability. Server explicitly mentions 'create' as part of CRUD operations.

The rule that runs create_card safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Trello MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create_card, this is the rule to start with:

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_card": {
      "limits": [
        {
          "counter": "create_card_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

Questions about create_card