create_board · Mcp Trello MCP: Risk & Policy

WHAT IT DOES

What create_board does on Mcp Trello

AI agents use create_board 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 needs a policy

The tool creates new data (a board) which is a Write operation. It is reversible because boards can be deleted. Severity is medium because while creation of unwanted boards could clutter a workspace and require cleanup, it does not irreversibly destroy data or have financial impact. The confidence is high because the description clearly indicates board creation without ambiguity.

From the tool's definition Tool creates a new board in the currently selected workspace, as explicitly stated in the description: 'Create a new board in the currently selected workspace.' This is a reversible data creation operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_board Rate-limited

create_board 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": {
      "limits": [
        {
          "counter": "create_board_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

What does the create_board tool do? +

Create a new board in the currently selected workspace. 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? +

Register the Mcp Trello MCP server in PolicyLayer and add a rule for create_board: 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? +

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

Can I rate-limit create_board? +

Yes. Add a rate_limit block to the create_board 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 completely? +

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

create_board 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.