custom_list_custom_object_types

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

SERVERMarketo MCP Server SOURCEtyron-pretorius/marketo-mcp

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/tyron-pretorius-marketo-mcp/custom-list-custom-object-types.md

WHAT IT DOES

What custom_list_custom_object_types does on Marketo MCP Server

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

RISK

Why custom_list_custom_object_types is rated Low

This tool retrieves metadata about custom object types without creating, modifying, deleting, or executing operations. It is a read-only query operation with minimal blast radius if misused by an AI agent—worst case being information disclosure of object schema definitions.

From the tool's definition Tool name 'custom_list_custom_object_types' and description indicate it lists/retrieves custom object type definitions from Marketo.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs custom_list_custom_object_types 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_list_custom_object_types, this is the rule to start with:

custom_list_custom_object_types Allowed

custom_list_custom_object_types 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": {
    "custom_list_custom_object_types": {}
  }
}

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

FAQ

Questions about custom_list_custom_object_types

What does the custom_list_custom_object_types tool do? +

[CUSTOM] Calls the Marketo REST API directly (not Adobe's native MCP). It is categorised as a Read tool in the Marketo MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on custom_list_custom_object_types? +

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

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

Can I rate-limit custom_list_custom_object_types? +

Yes. Add a rate_limit block to the custom_list_custom_object_types 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_list_custom_object_types completely? +

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

custom_list_custom_object_types 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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