[CUSTOM] Calls the Marketo REST API directly (not Adobe's native MCP).
AI agents call custom_discard_custom_object_type_draft 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 'discard' operation removes or deletes a draft custom object type, which is an irreversible action that cannot be undone without recreating the object. This meets the Destructive category definition. While it operates on a draft (not production data), discarding a draft eliminates work and is irreversible.
From the tool's definition Tool name contains 'discard', which indicates deletion or irreversible removal of a draft custom object type. The operation targets a 'draft' that is being discarded rather than saved or updated.
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_discard_custom_object_type_draft: 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_discard_custom_object_type_draft 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_discard_custom_object_type_draft 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_discard_custom_object_type_draft. 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_discard_custom_object_type_draft 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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