mautic_create_contact_field

Create a new custom contact field. Set isUniqueIdentifier to true to auto-merge contacts sharing the same value.

SERVERMcp Mautic SOURCEesanum/mcp-mautic

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/esanum-mcp-mautic/mautic-create-contact-field.md

WHAT IT DOES

What mautic_create_contact_field does on Mcp Mautic

AI agents use mautic_create_contact_field to create or update resources in Mcp Mautic, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Mautic environment.

RISK

Why mautic_create_contact_field is rated Medium

This tool creates/adds schema elements (custom fields) rather than deleting them, making it Write rather than Destructive. While it can trigger contact merging via isUniqueIdentifier, this is configuration-driven and reversible. The blast radius is medium: misconfiguration could corrupt data organization or cause unwanted contact merges, but the operation itself doesn't permanently destroy data.

From the tool's definition Tool creates a new custom contact field, modifying the data schema. Description explicitly states 'Create a new custom contact field' indicating a data creation operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mautic_create_contact_field safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp Mautic, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For mautic_create_contact_field, this is the rule to start with:

mautic_create_contact_field Rate-limited

mautic_create_contact_field 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": {
    "mautic_create_contact_field": {
      "limits": [
        {
          "counter": "mautic_create_contact_field_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Mautic, apply this rule, and every mautic_create_contact_field call is checked against it from then on.

FAQ

Questions about mautic_create_contact_field

What does the mautic_create_contact_field tool do? +

Create a new custom contact field. Set isUniqueIdentifier to true to auto-merge contacts sharing the same value. It is categorised as a Write tool in the Mcp Mautic MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on mautic_create_contact_field? +

Register the Mcp Mautic MCP server in PolicyLayer and add a rule for mautic_create_contact_field: 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 Mautic. Nothing to install.

What risk level is mautic_create_contact_field? +

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

Can I rate-limit mautic_create_contact_field? +

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

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

mautic_create_contact_field is provided by the Mcp Mautic MCP server (esanum/mcp-mautic). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Mcp Mautic, and thousands of servers like it.

This server

All 229 Mcp Mautic tools →

Across the catalogue

create_task on 0rca Dojo MCP Server →create-task on Kanban MCP Server →create_package_backup on Android Forensics ADB MCP Server →create_project on Stitch MCP Server → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →