custom_update_email_full_content
[CUSTOM] Calls the Marketo REST API directly (not Adobe's native MCP).
This record as markdown: /tools/tyron-pretorius-marketo-mcp/custom-update-email-full-content.md
What custom_update_email_full_content does on Marketo MCP Server
AI agents use custom_update_email_full_content to create or update resources in Marketo MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Marketo MCP Server environment.
Why custom_update_email_full_content is rated Medium
This tool modifies email content in a marketing automation platform (Marketo), which is a reversible Write operation. It affects marketing communications and could impact customer-facing campaigns if misused. Severity is 'high' because email modifications in Marketo can affect thousands of recipients and brand reputation, though the action is technically reversible (can be re-edited or reverted).
From the tool's definition Tool name contains 'update' and 'email' with 'full_content', indicating modification of email content. Description states it 'Calls the Marketo REST API directly' for operations.
Attacks that exploit this kind of access
The rule that runs custom_update_email_full_content 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_update_email_full_content, this is the rule to start with:
custom_update_email_full_content stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Marketo MCP Server, apply this rule, and every custom_update_email_full_content call is checked against it from then on.
Questions about custom_update_email_full_content
[CUSTOM] Calls the Marketo REST API directly (not Adobe's native MCP). It is categorised as a Write tool in the Marketo MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Marketo MCP Server MCP server in PolicyLayer and add a rule for custom_update_email_full_content: 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_update_email_full_content is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the custom_update_email_full_content 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_update_email_full_content. 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_update_email_full_content 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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