Delete a label from a Trello board. Use this to remove unused or obsolete labels. Warning: This will remove the label from all cards that use it.
AI agents call deleteLabel 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.
This tool permanently deletes data (a label) and removes it from all associated cards across the board. Deletion is irreversible and has broad impact, making it Destructive rather than Write. Severity is high because a misused agent could delete important organizational labels affecting many cards, though financial impact is unlikely.
From the tool's definition Tool name is 'deleteLabel' and description states 'Delete a label from a Trello board' with explicit warning 'This will remove the label from all cards that use it.' The action is irreversible deletion affecting multiple cards.
Attacks that exploit this kind of access
Delete a label from a Trello board. Use this to remove unused or obsolete labels. Warning: This will remove the label from all cards that use it. 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 deleteLabel: 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.
deleteLabel 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 deleteLabel 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 deleteLabel. 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.
deleteLabel is provided by the Trello MCP Server MCP server (semblancelabs/trello-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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