AI agents call get_all_zodiacs to retrieve information from Star MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool fetches and returns a static list of zodiac information. It performs no data modification, deletion, code execution, or financial operations. The action is purely informational read-only retrieval, characteristic of the Read category with minimal security risk.
From the tool's definition Tool name 'get_all_zodiacs' and description '获取所有星座的基本信息列表' (get basic information list of all zodiac signs) indicate a retrieval operation that queries and returns zodiac data without modification or side effects.
Attacks that exploit this kind of access
获取所有星座的基本信息列表. It is categorised as a Read tool in the Star MCP MCP Server, which means it retrieves data without modifying state.
Register the Star MCP server in PolicyLayer and add a rule for get_all_zodiacs: 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 Star MCP. Nothing to install.
get_all_zodiacs 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_all_zodiacs 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_all_zodiacs. 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_all_zodiacs is provided by the Star MCP server (jlankellii/star-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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