Get app rankings (top free, paid, or grossing)
AI agents call list to retrieve information from Store Scraper MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves publicly available ranking information from app stores. It performs a query operation that returns data without creating, modifying, deleting, or executing any operations. The blast radius of misuse is minimal—at worst, an agent could retrieve rankings repeatedly or in unusual patterns, but no data would be altered, deleted, or financial transactions triggered.
From the tool's definition Tool description states 'Get app rankings' which retrieves pre-computed ranking data. The verb 'Get' and the context of querying App Store/Play Store rankings indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
Get app rankings (top free, paid, or grossing). It is categorised as a Read tool in the Store Scraper MCP MCP Server, which means it retrieves data without modifying state.
Register the Store Scraper MCP server in PolicyLayer and add a rule for list: 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 Store Scraper MCP. Nothing to install.
list 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 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. 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 is provided by the Store Scraper MCP server (miguelalvred/mobile-store-scraper-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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