create_column · Basecamp MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_column does on Basecamp MCP Server

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

WHY IT NEEDS A POLICY

Why create_column needs a policy

The tool creates (adds) a new column to a card table, which is a reversible write operation. It modifies the schema/structure of a data container but does not execute arbitrary code, delete data, or involve financial transactions. The medium severity reflects that misconfiguration could impact team workflows, but the change is reversible through deletion or modification.

From the tool's definition Tool name is 'create_column' and description states 'Create a new column in a card table' — this creates new data structure within Basecamp.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_column Rate-limited

create_column 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_column": {
      "limits": [
        {
          "counter": "create_column_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 Basecamp MCP Server, so you can run agents against it safely.

FAQ

Questions about create_column

What does the create_column tool do? +

Create a new column in a card table. It is categorised as a Write tool in the Basecamp MCP Server 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_column? +

Register the Basecamp MCP Server MCP server in PolicyLayer and add a rule for create_column: 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 Basecamp MCP Server. Nothing to install.

What risk level is create_column? +

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

Can I rate-limit create_column? +

Yes. Add a rate_limit block to the create_column 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_column completely? +

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

create_column is provided by the Basecamp MCP Server MCP server (jhliberty/basecamp-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.