AI agents call list_voided_purchases 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.
Although this tool reads sensitive financial data (voided purchases, refunds, chargebacks), it performs no write, destructive, or financial transaction operations. The high severity reflects the sensitive nature of the data accessed (financial records), but the category is Read because the tool only retrieves information.
From the tool's definition Tool name and description indicate 'list voided purchases' retrieves/queries data about refunds and chargebacks without modifying or deleting records. The verb 'list' and context of viewing purchase history confirm read-only behavior.
Documented attack patterns abuse exactly the kind of access list_voided_purchases 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_voided_purchases:
{
"version": "1",
"default": "deny",
"tools": {
"list_voided_purchases": {}
}
}list_voided_purchases is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List voided purchases (refunds, chargebacks). 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_voided_purchases: 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_voided_purchases 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_voided_purchases 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_voided_purchases. 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_voided_purchases 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.