create_board_list · Mcp Trello MCP: Risk & Policy

WHAT IT DOES

What create_board_list does on Mcp Trello

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

WHY IT NEEDS A POLICY

Why create_board_list needs a policy

This tool creates a new organizational structure (a list/column) within an existing board, which is a reversible write operation. It does not execute arbitrary code, delete data, move money, or have destructive effects. The scope is limited to creating a single list container. Misuse would result in minor organizational clutter but no data loss or security breach, justifying 'low' severity.

From the tool's definition Tool name 'create_board_list' and description 'Create a new list (column) in a specific board' indicate creation of new data structures within Trello boards.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_board_list Rate-limited

create_board_list 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_board_list": {
      "limits": [
        {
          "counter": "create_board_list_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Mcp Trello, so you can run agents against it safely.

FAQ

Questions about create_board_list

What does the create_board_list tool do? +

Create a new list (column) in a specific board. It is categorised as a Write tool in the Mcp 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_board_list? +

Register the Mcp Trello MCP server in PolicyLayer and add a rule for create_board_list: 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 Mcp Trello. Nothing to install.

What risk level is create_board_list? +

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

Can I rate-limit create_board_list? +

Yes. Add a rate_limit block to the create_board_list 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_board_list completely? +

Set action: deny in the PolicyLayer policy for create_board_list. 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_board_list? +

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