list_cards
List cards. Pass list_id for one column, or board_id (or default board) for all cards on a board.
This record as markdown: /tools/artemnikov-trello-mcp/list-cards.md
What list_cards does on Trello
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.
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 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.
Attacks that exploit this kind of access
The rule that runs list_cards safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Trello, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_cards, this is the rule to start with:
list_cards is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Trello, apply this rule, and every list_cards call is checked against it from then on.
Questions about list_cards
List cards. Pass list_id for one column, or board_id (or default board) for all cards on a board. It is categorised as a Read tool in the Trello MCP Server, which means it retrieves data without modifying state.
Register the Trello MCP server in PolicyLayer and add a rule for list_cards: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Trello. Nothing to install.
list_cards is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_cards rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for list_cards. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
list_cards is provided by the Trello MCP server (artemnikov/trello-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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