create_label

Create a new label on a board

SERVERTrello SOURCE@delorenj/mcp-server-trello

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

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

WHAT IT DOES

What create_label does on Trello

AI agents use create_label to create or update resources in Trello, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Trello environment.

RISK

Why create_label is rated Medium

This tool creates a new label resource on a Trello board. Label creation is reversible (labels can be deleted) and does not irreversibly destroy data, execute arbitrary code, or move money. It modifies board state by adding metadata.

From the tool's definition Tool name is 'create_label' and description states 'Create a new label on a board'. The verb 'create' indicates data creation, which is a write operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

create_label Rate-limited

create_label stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_label": {
      "limits": [
        {
          "counter": "create_label_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about create_label

What does the create_label tool do? +

Create a new label on a board. It is categorised as a Write tool in the Trello MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_label? +

Register the Trello MCP server in PolicyLayer and add a rule for create_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 create_label? +

create_label is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_label? +

Yes. Add a rate_limit block to the create_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 create_label completely? +

Set action: deny in the PolicyLayer policy for create_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 create_label? +

create_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.

KEEP EXPLORING

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create-label on Meme MCP Server →create_task on 0rca Dojo MCP Server →create-task on Kanban MCP Server →create_package_backup on Android Forensics ADB MCP Server → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →