create_email · CiviCRM MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_email does on CiviCRM MCP Server

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

WHY IT NEEDS A POLICY

Why create_email needs a policy

This tool creates (writes) a new email record, which is a reversible operation. It does not execute arbitrary code, delete data permanently, or move money. The severity is medium because misuse could create spam records, pollute contact databases, or enable phishing workflows, but the impact is limited to email record creation and remains recoverable via deletion.

From the tool's definition Tool name is 'create_email' and description states 'Create a new email record' — this creates new data in the CiviCRM system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_email Rate-limited

create_email 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_email": {
      "limits": [
        {
          "counter": "create_email_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 CiviCRM MCP Server, so you can run agents against it safely.

FAQ

Questions about create_email

What does the create_email tool do? +

Create a new email record. It is categorised as a Write tool in the CiviCRM 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_email? +

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

What risk level is create_email? +

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

Can I rate-limit create_email? +

Yes. Add a rate_limit block to the create_email 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_email completely? +

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

create_email is provided by the CiviCRM MCP Server MCP server (johncallhub/civicrm-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.