AI agents call search_rankings to retrieve information from Astro MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a retrieval operation against the Astro ASO database to fetch current keyword ranking metrics. There are no side effects, no data is created, modified, or deleted, and no external code execution occurs. It is a straightforward data query matching the 'Read' category. Severity is low because misuse would only expose competitive analysis data with no destructive or financial consequences.
From the tool's definition Tool name 'search_rankings' combined with description 'Search current keyword rankings for apps' indicates a query operation that retrieves ranking data from the ASO database.
Documented attack patterns abuse exactly the kind of access search_rankings gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Astro MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for search_rankings:
{
"version": "1",
"default": "deny",
"tools": {
"search_rankings": {}
}
} search_rankings is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search current keyword rankings for apps. It is categorised as a Read tool in the Astro MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Astro MCP Server MCP server in PolicyLayer and add a rule for search_rankings: 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 Astro MCP Server. Nothing to install.
search_rankings 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 search_rankings 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 search_rankings. 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.
search_rankings is provided by the Astro MCP Server MCP server (timbroddin/astro-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Astro MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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15 Astro MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.