This record as markdown: /tools/abdwyer-trellomcp/delete-card.md
What delete_card does on Trello MCP Server
AI agents call delete_card to permanently remove resources in Trello MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why delete_card is rated Critical
This tool irreversibly removes card data from Trello. While not as broad as deleting entire boards or lists, individual card deletion is a destructive action with potential business impact (loss of task information, project records, collaboration history). The high severity reflects the permanent nature of the operation and potential for unintended data loss if misused by an AI agent.
From the tool's definition Tool name 'delete_card' combined with description 'Delete a Trello card' indicates permanent removal of data. The parent server description confirms 'full CRUD operations' including destructive actions.
Attacks that exploit this kind of access
The rule that runs delete_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 delete_card, this is the rule to start with:
delete_card is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Trello MCP Server, apply this rule, and every delete_card call is checked against it from then on.
Questions about delete_card
Delete a Trello card. It is categorised as a Destructive tool in the Trello MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Trello MCP Server MCP server in PolicyLayer and add a rule for delete_card: 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 MCP Server. Nothing to install.
delete_card is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the delete_card 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 delete_card. 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.
delete_card is provided by the Trello MCP Server MCP server (abdwyer/trellomcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Trello MCP Server, and thousands of servers like it.
Across the catalogue