custom_unapprove_snippet · Marketo MCP Server MCP

WHAT IT DOES

What custom_unapprove_snippet does on Marketo MCP Server

AI agents use custom_unapprove_snippet 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 IT NEEDS A POLICY

Why custom_unapprove_snippet needs a policy

The name suggests unapproving a snippet in Marketo, which is a reversible state change (moving a published asset back to draft/unapproved status). This is a Write operation as it modifies the approval state of a snippet but does not delete it. Confidence is moderate because the description is largely uninformative and the actual API call made is unspecified.

From the tool's definition 'custom_unapprove_snippet' and description only states 'Calls the Marketo REST API directly (not Adobe's native MCP)' — uninformative beyond the tool name

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

custom_unapprove_snippet Rate-limited

custom_unapprove_snippet 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "custom_unapprove_snippet": {
      "limits": [
        {
          "counter": "custom_unapprove_snippet_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Marketo MCP Server, so you can run agents against it safely.

FAQ

Questions about custom_unapprove_snippet

What does the custom_unapprove_snippet tool do? +

[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.

How do I enforce a policy on custom_unapprove_snippet? +

Register the Marketo MCP Server MCP server in PolicyLayer and add a rule for custom_unapprove_snippet: 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.

What risk level is custom_unapprove_snippet? +

custom_unapprove_snippet is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit custom_unapprove_snippet? +

Yes. Add a rate_limit block to the custom_unapprove_snippet 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.

How do I block custom_unapprove_snippet completely? +

Set action: deny in the PolicyLayer policy for custom_unapprove_snippet. 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.

What MCP server provides custom_unapprove_snippet? +

custom_unapprove_snippet 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.