# list_cards

List cards. Pass list_id for one column, or board_id (or default board) for all cards on a board.

Agent View of the PolicyLayer registry record for `list_cards`. HTML page: https://policylayer.com/tools/artemnikov-trello-mcp/list-cards

## Facts

- Tool: `list_cards`
- Server: Trello (`artemnikov/trello-mcp`) — https://policylayer.com/tools/artemnikov-trello-mcp.md
- Homepage: https://github.com/Artemnikov/Trello-mcp
- Risk category: Read (Low risk)
- Registry record: grade B, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why list_cards is rated Low

This tool only retrieves and displays existing Trello cards without creating, modifying, deleting, or executing any operations. It has no side effects and poses minimal security risk even if misused by an AI agent, as it cannot alter state or trigger external actions.

From the tool's own definition: "Tool name 'list_cards' and description 'List cards' — purely retrieves/queries card data with no modification or execution capability. Accepts list_id or board_id as parameters for filtering, consistent with a retrieval operation."

## Use case

AI agents call list_cards to retrieve information from Trello without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_cards": {}
  }
}
```

## Other tools on Trello (15)

- `get_card` — Read — https://policylayer.com/tools/artemnikov-trello-mcp/get-card.md
- `list_board_members` — Read — https://policylayer.com/tools/artemnikov-trello-mcp/list-board-members.md
- `list_boards` — Read — https://policylayer.com/tools/artemnikov-trello-mcp/list-boards.md
- `list_labels` — Read — https://policylayer.com/tools/artemnikov-trello-mcp/list-labels.md
- `list_lists` — Read — https://policylayer.com/tools/artemnikov-trello-mcp/list-lists.md
- `add_checklist` — Write — https://policylayer.com/tools/artemnikov-trello-mcp/add-checklist.md
- `add_checklist_item` — Write — https://policylayer.com/tools/artemnikov-trello-mcp/add-checklist-item.md
- `add_comment` — Write — https://policylayer.com/tools/artemnikov-trello-mcp/add-comment.md
- `add_label` — Write — https://policylayer.com/tools/artemnikov-trello-mcp/add-label.md
- `archive_card` — Write — https://policylayer.com/tools/artemnikov-trello-mcp/archive-card.md
- `assign_member` — Write — https://policylayer.com/tools/artemnikov-trello-mcp/assign-member.md
- `create_card` — Write — https://policylayer.com/tools/artemnikov-trello-mcp/create-card.md
- `move_card` — Write — https://policylayer.com/tools/artemnikov-trello-mcp/move-card.md
- `set_check_item` — Write — https://policylayer.com/tools/artemnikov-trello-mcp/set-check-item.md
- `update_card` — Write — https://policylayer.com/tools/artemnikov-trello-mcp/update-card.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=artemnikov-trello-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/artemnikov-trello-mcp