create_template · Campaign Monitor MCP: Risk & Policy

WHAT IT DOES

What create_template does on Campaign Monitor MCP

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

WHY IT NEEDS A POLICY

Why create_template needs a policy

This tool creates new email templates, which is a write operation that adds data to the system. It does not execute code, delete data irreversibly, move money, or query/read data only. While template creation could potentially be misused to inject malicious content into campaigns, the primary function is data creation rather than execution of external effects.

From the tool's definition Tool name is 'create_template' and description states 'Create a new email template for a client' — this is a creation operation that modifies data (adds a new template) but is reversible (templates can be deleted or updated).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_template Rate-limited

create_template 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_template": {
      "limits": [
        {
          "counter": "create_template_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 Campaign Monitor MCP, so you can run agents against it safely.

FAQ

Questions about create_template

What does the create_template tool do? +

Create a new email template for a client. It is categorised as a Write tool in the Campaign Monitor MCP 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_template? +

Register the Campaign Monitor MCP server in PolicyLayer and add a rule for create_template: 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 Campaign Monitor MCP. Nothing to install.

What risk level is create_template? +

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

Can I rate-limit create_template? +

Yes. Add a rate_limit block to the create_template 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_template completely? +

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

create_template is provided by the Campaign Monitor MCP server (pauliowest/cmon-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.