[CUSTOM] Calls the Marketo REST API directly (not Adobe's native MCP).
AI agents call custom_describe_named_accounts to retrieve information from Marketo MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves or queries data about named accounts without creating, modifying, deleting, or executing arbitrary code. While it makes direct API calls, the operation is fundamentally read-only based on its naming convention and context within the Marketo management system. The low severity reflects that data retrieval poses minimal risk compared to write, execute, or destructive operations.
From the tool's definition Tool name contains 'describe' and 'named_accounts' (retrieval operation); description indicates it 'calls the Marketo REST API directly' to presumably fetch/query account data, which is a read operation with no modification or side effects.
Attacks that exploit this kind of access
[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.
Register the Marketo MCP Server MCP server in PolicyLayer and add a rule for custom_describe_named_accounts: 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_describe_named_accounts is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the custom_describe_named_accounts 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_describe_named_accounts. 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_describe_named_accounts 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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