AI agents call list_in_app_products to retrieve information from Play Store without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns information about in-app products without creating, modifying, deleting, or executing any operations. Listing existing data is a read-only operation with minimal risk to the system or business logic.
From the tool's definition Tool name 'list_in_app_products' and description 'List all in-app products for an app' indicate a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access list_in_app_products gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Play Store, and nothing reaches the server without passing your rules. This is the rule we recommend for list_in_app_products:
{
"version": "1",
"default": "deny",
"tools": {
"list_in_app_products": {}
}
}list_in_app_products is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all in-app products for an app. It is categorised as a Read tool in the Play Store MCP Server, which means it retrieves data without modifying state.
Register the Play Store MCP server in PolicyLayer and add a rule for list_in_app_products: 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 Play Store. Nothing to install.
list_in_app_products 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 list_in_app_products 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 list_in_app_products. 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.
list_in_app_products is provided by the Play Store MCP server (lusky3/play-store-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Play Store, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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27 Play Store tools catalogued and risk-classified — across an index of 43,000+ MCP servers.