[CUSTOM] Calls the Marketo REST API directly (not Adobe's native MCP).
AI agents call custom_discard_custom_activity_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 tool name contains 'discard', which strongly implies an irreversible action — permanently abandoning/deleting a draft. Discarding a draft typically cannot be undone without recreating the work. The description is largely uninformative beyond confirming direct REST API access, which lowers confidence slightly.
From the tool's definition 'discard' in the tool name implies irreversible deletion or abandonment of a draft custom activity type; 'Calls the Marketo REST API directly' with no additional reversibility guarantees
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_activity_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_activity_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_activity_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_activity_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_activity_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.
Teams ship this data inside their own products. See what a licence covers →