list_creatives_by_line_item

THE RISK

Low Risk

Why list_creatives_by_line_item needs a policy

This tool retrieves or lists data without modifying, creating, or deleting anything. The 'list_' prefix is a strong indicator of a Read operation. Even if misused by an AI agent, it can only enumerate creatives—a low-risk information disclosure with no side effects.

From the tool's definition Tool name 'list_creatives_by_line_item' indicates a retrieval/query operation that returns creatives associated with a line item.

Documented attack patterns abuse exactly the kind of access list_creatives_by_line_item gives an agent:

POLICY

How to control list_creatives_by_line_item

PolicyLayer is an MCP gateway — it sits between your AI agents and Google Ad Manager MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_creatives_by_line_item:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_creatives_by_line_item": {}
  }
}

list_creatives_by_line_item is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Google Ad Manager MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

Related tools and policies

More Google Ad Manager MCP Server tools

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All 35 Google Ad Manager MCP Server tools →

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about list_creatives_by_line_item

What does the list_creatives_by_line_item tool do? +

list_creatives_by_line_item. It is categorised as a Read tool in the Google Ad Manager MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_creatives_by_line_item? +

Register the Google Ad Manager MCP Server MCP server in PolicyLayer and add a rule for list_creatives_by_line_item: 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 Google Ad Manager MCP Server. Nothing to install.

What risk level is list_creatives_by_line_item? +

list_creatives_by_line_item is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_creatives_by_line_item? +

Yes. Add a rate_limit block to the list_creatives_by_line_item 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 list_creatives_by_line_item completely? +

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

list_creatives_by_line_item is provided by the Google Ad Manager MCP Server MCP server (matiouscorp/google-ad-manager-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Google Ad Manager MCP Server tool call.

Start from Google Ad Manager MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →