custom_import_leads_csv · Marketo MCP Server MCP

WHAT IT DOES

What custom_import_leads_csv does on Marketo MCP Server

AI agents use custom_import_leads_csv 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_import_leads_csv needs a policy

This tool creates or modifies lead records in bulk, which is a reversible Write operation. It is not Destructive (no deletion/purge indicated), not Execute (no arbitrary code execution), not Financial (no payments), and not Read (import implies creation, not mere retrieval).

From the tool's definition Tool name 'custom_import_leads_csv' indicates bulk creation/modification of lead records via CSV import. No description provided, but the name and context (Marketo lead management) clearly indicate data import/creation capability.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

custom_import_leads_csv Rate-limited

custom_import_leads_csv 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_import_leads_csv": {
      "limits": [
        {
          "counter": "custom_import_leads_csv_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_import_leads_csv

What does the custom_import_leads_csv tool do? +

custom_import_leads_csv. 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_import_leads_csv? +

Register the Marketo MCP Server MCP server in PolicyLayer and add a rule for custom_import_leads_csv: 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_import_leads_csv? +

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

Can I rate-limit custom_import_leads_csv? +

Yes. Add a rate_limit block to the custom_import_leads_csv 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_import_leads_csv completely? +

Set action: deny in the PolicyLayer policy for custom_import_leads_csv. 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_import_leads_csv? +

custom_import_leads_csv 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.