custom_delete_user

[CUSTOM] Calls the Marketo REST API directly (not Adobe's native MCP).

SERVERMarketo MCP Server SOURCEtyron-pretorius/marketo-mcp

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/tyron-pretorius-marketo-mcp/custom-delete-user.md

WHAT IT DOES

What custom_delete_user does on Marketo MCP Server

AI agents call custom_delete_user to permanently remove resources in Marketo MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why custom_delete_user is rated Critical

The tool name explicitly contains 'delete' and targets 'user' entities. Deletion operations are irreversible and cannot be undone, placing this in the Destructive category. The critical severity is justified because deleting user/lead records in a marketing automation system constitutes permanent loss of customer data with no recovery mechanism.

From the tool's definition Tool name is 'custom_delete_user' containing 'delete' which indicates irreversible data removal. The description states it 'Calls the Marketo REST API directly' for a delete operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs custom_delete_user safely

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

custom_delete_user Hidden

custom_delete_user is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "custom_delete_user"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Marketo MCP Server, apply this rule, and every custom_delete_user call is checked against it from then on.

FAQ

Questions about custom_delete_user

What does the custom_delete_user tool do? +

[CUSTOM] Calls the Marketo REST API directly (not Adobe's native MCP). It is categorised as a Destructive tool in the Marketo MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on custom_delete_user? +

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

What risk level is custom_delete_user? +

custom_delete_user is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit custom_delete_user? +

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

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

custom_delete_user is provided by the Marketo MCP Server MCP server (tyron-pretorius/marketo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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