# create_card

A write tool on the Trello MCP Server MCP server.

Agent View of the PolicyLayer registry record for `create_card`. HTML page: https://policylayer.com/tools/abdwyer-trellomcp/create-card

## Facts

- Tool: `create_card`
- Server: Trello MCP Server (`abdwyer/trellomcp`) — https://policylayer.com/tools/abdwyer-trellomcp.md
- Homepage: https://github.com/abdwyer/TrelloMCP
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "create_card",
    "arguments": {}
  }
}
```

## 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 own 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."

## Use case

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.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Trello MCP Server:

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

## Other tools on Trello MCP Server (40)

- `delete_attachment` — Destructive — https://policylayer.com/tools/abdwyer-trellomcp/delete-attachment.md
- `delete_card` — Destructive — https://policylayer.com/tools/abdwyer-trellomcp/delete-card.md
- `delete_checklist` — Destructive — https://policylayer.com/tools/abdwyer-trellomcp/delete-checklist.md
- `delete_checklist_item` — Destructive — https://policylayer.com/tools/abdwyer-trellomcp/delete-checklist-item.md
- `delete_label` — Destructive — https://policylayer.com/tools/abdwyer-trellomcp/delete-label.md
- `download_attachment` — Read — https://policylayer.com/tools/abdwyer-trellomcp/download-attachment.md
- `get_attachment` — Read — https://policylayer.com/tools/abdwyer-trellomcp/get-attachment.md
- `get_board` — Read — https://policylayer.com/tools/abdwyer-trellomcp/get-board.md
- `get_board_labels` — Read — https://policylayer.com/tools/abdwyer-trellomcp/get-board-labels.md
- `get_board_lists` — Read — https://policylayer.com/tools/abdwyer-trellomcp/get-board-lists.md
- `get_card` — Read — https://policylayer.com/tools/abdwyer-trellomcp/get-card.md
- `get_card_attachments` — Read — https://policylayer.com/tools/abdwyer-trellomcp/get-card-attachments.md
- `get_card_checklists` — Read — https://policylayer.com/tools/abdwyer-trellomcp/get-card-checklists.md
- `get_card_labels` — Read — https://policylayer.com/tools/abdwyer-trellomcp/get-card-labels.md
- `get_checklist` — Read — https://policylayer.com/tools/abdwyer-trellomcp/get-checklist.md
- `get_checklist_items` — Read — https://policylayer.com/tools/abdwyer-trellomcp/get-checklist-items.md
- `list_boards` — Read — https://policylayer.com/tools/abdwyer-trellomcp/list-boards.md
- `list_cards` — Read — https://policylayer.com/tools/abdwyer-trellomcp/list-cards.md
- `add_attachment_file` — Write — https://policylayer.com/tools/abdwyer-trellomcp/add-attachment-file.md
- `add_attachment_url` — Write — https://policylayer.com/tools/abdwyer-trellomcp/add-attachment-url.md
- `add_checklist_item` — Write — https://policylayer.com/tools/abdwyer-trellomcp/add-checklist-item.md
- `add_checklist_items` — Write — https://policylayer.com/tools/abdwyer-trellomcp/add-checklist-items.md
- `add_label_to_card` — Write — https://policylayer.com/tools/abdwyer-trellomcp/add-label-to-card.md
- `archive_list` — Write — https://policylayer.com/tools/abdwyer-trellomcp/archive-list.md
- `clear_card_due_date` — Write — https://policylayer.com/tools/abdwyer-trellomcp/clear-card-due-date.md
- `create_board` — Write — https://policylayer.com/tools/abdwyer-trellomcp/create-board.md
- `create_cards` — Write — https://policylayer.com/tools/abdwyer-trellomcp/create-cards.md
- `create_checklist` — Write — https://policylayer.com/tools/abdwyer-trellomcp/create-checklist.md
- `create_checklist_with_items` — Write — https://policylayer.com/tools/abdwyer-trellomcp/create-checklist-with-items.md
- `create_label` — Write — https://policylayer.com/tools/abdwyer-trellomcp/create-label.md
- …and 10 more: https://policylayer.com/tools/abdwyer-trellomcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=abdwyer-trellomcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/abdwyer-trellomcp