delete_label

Delete a label from a board

SERVERTrello SOURCE@delorenj/mcp-server-trello

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-delorenj-mcp-server-trello/delete-label.md

WHAT IT DOES

What delete_label does on Trello

AI agents call delete_label to permanently remove resources in Trello, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why delete_label is rated Critical

This tool irreversibly deletes a label from a Trello board. Deletion is an unundo-able operation that removes data permanently. While the blast radius is moderate (a label deletion affects board organization and any cards tagged with it, but doesn't directly destroy cards or financial data), it is clearly destructive in nature and cannot be reversed by the tool itself.

From the tool's definition Tool name is 'delete_label' with description 'Delete a label from a board'. The verb 'delete' indicates irreversible removal of data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs delete_label 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 delete_label, this is the rule to start with:

delete_label Hidden

delete_label is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_label"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Trello, apply this rule, and every delete_label call is checked against it from then on.

FAQ

Questions about delete_label

What does the delete_label tool do? +

Delete a label from a board. It is categorised as a Destructive tool in the Trello MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on delete_label? +

Register the Trello MCP server in PolicyLayer and add a rule for delete_label: 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.

What risk level is delete_label? +

delete_label is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit delete_label? +

Yes. Add a rate_limit block to the delete_label 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.

How do I block delete_label completely? +

Set action: deny in the PolicyLayer policy for delete_label. 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.

What MCP server provides delete_label? +

delete_label is provided by the Trello MCP server (@delorenj/mcp-server-trello). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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Guides

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