custom_delete_leads

[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-leads.md

WHAT IT DOES

What custom_delete_leads does on Marketo MCP Server

AI agents call custom_delete_leads 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_leads is rated Critical

This tool permanently removes lead records from a Marketo instance. Lead deletion cannot be undone and represents loss of customer data. This is the most severe category (Destructive ranks above Execute, Write, and Read). The critical severity reflects the high blast radius: an AI agent executing this with incorrect filters or logic could wipe significant portions of a customer database.

From the tool's definition Tool name explicitly contains 'delete_leads' and description states it 'Calls the Marketo REST API directly'. The 'delete' verb combined with 'leads' (customer/prospect data) indicates irreversible deletion of records.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs custom_delete_leads 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_leads, this is the rule to start with:

custom_delete_leads Hidden

custom_delete_leads 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_leads"
  ]
}

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_leads call is checked against it from then on.

FAQ

Questions about custom_delete_leads

What does the custom_delete_leads 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_leads? +

Register the Marketo MCP Server MCP server in PolicyLayer and add a rule for custom_delete_leads: 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_leads? +

custom_delete_leads 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_leads? +

Yes. Add a rate_limit block to the custom_delete_leads 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_leads completely? +

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

custom_delete_leads 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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