create_campaign · Campaign Monitor MCP: Risk & Policy

WHAT IT DOES

What create_campaign does on Campaign Monitor MCP

AI agents use create_campaign 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_campaign needs a policy

This tool creates a new campaign artifact in the system. The action is reversible because campaigns are stored as drafts and have not yet been sent or executed at scale. While creation is a modification to system state, it is less severe than Execute (which runs operations) or Destructive (which irreversibly deletes data).

From the tool's definition Tool description states 'Create a new draft campaign in Campaign Monitor' — the word 'Create' and 'draft campaign' indicate data creation that is reversible (drafts can be modified or deleted without production impact).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_campaign Rate-limited

create_campaign 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_campaign": {
      "limits": [
        {
          "counter": "create_campaign_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_campaign

What does the create_campaign tool do? +

Create a new draft campaign in Campaign Monitor. 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_campaign? +

Register the Campaign Monitor MCP server in PolicyLayer and add a rule for create_campaign: 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_campaign? +

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

Can I rate-limit create_campaign? +

Yes. Add a rate_limit block to the create_campaign 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_campaign completely? +

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

create_campaign 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.