mautic_list_contact_custom_fields

List all contact custom fields with their configuration (alias, type, group, default value, options)

SERVERMcp Mautic SOURCEesanum/mcp-mautic

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/esanum-mcp-mautic/mautic-list-contact-custom-fields.md

WHAT IT DOES

What mautic_list_contact_custom_fields does on Mcp Mautic

AI agents call mautic_list_contact_custom_fields to retrieve information from Mcp Mautic without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why mautic_list_contact_custom_fields is rated Low

This tool retrieves and queries the schema/configuration of custom fields in the Mautic contact system. It has no side effects, cannot modify data, and poses minimal risk if an AI agent calls it. The blast radius is negligible—it only exposes metadata about field structure, which is typically non-sensitive configuration information. Classified as Read with low severity.

From the tool's definition Tool name contains 'list' and description states 'List all contact custom fields with their configuration' — a purely informational retrieval operation with no modification, deletion, or execution of code.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mautic_list_contact_custom_fields 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_list_contact_custom_fields, this is the rule to start with:

mautic_list_contact_custom_fields Allowed

mautic_list_contact_custom_fields is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "mautic_list_contact_custom_fields": {}
  }
}

ALLOW ONLY 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_list_contact_custom_fields call is checked against it from then on.

FAQ

Questions about mautic_list_contact_custom_fields

What does the mautic_list_contact_custom_fields tool do? +

List all contact custom fields with their configuration (alias, type, group, default value, options). It is categorised as a Read tool in the Mcp Mautic MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on mautic_list_contact_custom_fields? +

Register the Mcp Mautic MCP server in PolicyLayer and add a rule for mautic_list_contact_custom_fields: 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_list_contact_custom_fields? +

mautic_list_contact_custom_fields is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit mautic_list_contact_custom_fields? +

Yes. Add a rate_limit block to the mautic_list_contact_custom_fields 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_list_contact_custom_fields completely? +

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

mautic_list_contact_custom_fields 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.

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