AI agents call get_advertiser to retrieve information from Google Ad Manager MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves advertiser information without creating, modifying, or deleting any data. It poses minimal risk as it only accesses existing advertising account details. The severity is low because unauthorized access to advertiser metadata is typically less critical than write/delete operations or financial transactions, though it could reveal business information.
From the tool's definition Tool name and description: 'Get advertiser details by ID' indicates a retrieval operation with no modification or side effects. The verb 'get' and the read-only nature of fetching advertiser details confirms this is a data query.
Documented attack patterns abuse exactly the kind of access get_advertiser gives an agent:
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 get_advertiser:
{
"version": "1",
"default": "deny",
"tools": {
"get_advertiser": {}
}
}get_advertiser is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get advertiser details by ID. It is categorised as a Read tool in the Google Ad Manager MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Google Ad Manager MCP Server MCP server in PolicyLayer and add a rule for get_advertiser: 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.
get_advertiser 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 get_advertiser 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 get_advertiser. 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.
get_advertiser 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.
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.
Free to start. No card required.
35 Google Ad Manager MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.