[CUSTOM] Calls the Marketo REST API directly (not Adobe's native MCP).
AI agents call custom_delete_custom_activity_type_attributes 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.
The 'delete' operation in the tool name combined with the context of deleting custom activity type attributes makes this irreversibly destructive. Deletion of activity type attributes is a non-recoverable data loss operation that would impact marketing automation tracking and reporting. This is more severe than Write (reversible modifications) but less severe than Financial.
From the tool's definition Tool name contains 'delete' and 'custom_activity_type_attributes'; description indicates it calls Marketo REST API to perform deletions of custom activity type attributes, which are configuration assets that cannot be easily restored.
Attacks that exploit this kind of access
[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.
Register the Marketo MCP Server MCP server in PolicyLayer and add a rule for custom_delete_custom_activity_type_attributes: 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.
custom_delete_custom_activity_type_attributes is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the custom_delete_custom_activity_type_attributes 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.
Set action: deny in the PolicyLayer policy for custom_delete_custom_activity_type_attributes. 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.
custom_delete_custom_activity_type_attributes 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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