获取单只股票实时行情数据
AI agents call stock_get to retrieve information from Stock MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves real-time stock market data for a single stock. It is a read-only operation that queries data without creating, modifying, deleting, or executing any actions. The blast radius of misuse is minimal—an AI agent could only retrieve market data that is already publicly available, with no capability to alter positions, watchlists, or financial transactions.
From the tool's definition Tool name 'stock_get' and description '获取单只股票实时行情数据' (get real-time market data for a single stock) indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
获取单只股票实时行情数据. It is categorised as a Read tool in the Stock MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Stock MCP Server MCP server in PolicyLayer and add a rule for stock_get: 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 Stock MCP Server. Nothing to install.
stock_get 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 stock_get 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 stock_get. 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.
stock_get is provided by the Stock MCP Server MCP server (kinmeic/stock-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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