AI agents call get_stock_info to retrieve information from Stock-MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves static company overview data for stocks. It queries information but does not create, modify, delete, or execute any operations. The description explicitly indicates a 'get' operation (获取 = retrieve/fetch), which is a classic read operation. No side effects or irreversible actions are possible.
From the tool's definition Tool name 'get_stock_info' and description '获取个股公司概况信息' (get individual stock company overview information) indicates retrieval of company information without modification.
Attacks that exploit this kind of access
获取个股公司概况信息. It is categorised as a Read tool in the Stock-MCP MCP Server, which means it retrieves data without modifying state.
Register the Stock- MCP server in PolicyLayer and add a rule for get_stock_info: 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. Nothing to install.
get_stock_info 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_stock_info 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_stock_info. 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_stock_info is provided by the Stock- MCP server (nomi982/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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