AI agents call get_limit_surge_stocks to retrieve information from Sfc Data without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries financial market data (stocks with significant price movements filtered by theme) without creating, modifying, or deleting any data. It is a read-only data retrieval operation typical of financial data APIs. The severity is low as misuse would only expose existing public market information without financial or operational consequences.
From the tool's definition Tool name 'get_limit_surge_stocks' and description '获取主题大涨股票（按主题查询当日大涨股票，可筛选涨停股）' [Get theme surge stocks (query daily surge stocks by theme, can filter limit-up stocks)] indicate data retrieval only.
Attacks that exploit this kind of access
获取主题大涨股票（按主题查询当日大涨股票，可筛选涨停股）. It is categorised as a Read tool in the Sfc Data MCP Server, which means it retrieves data without modifying state.
Register the Sfc Data MCP server in PolicyLayer and add a rule for get_limit_surge_stocks: 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 Sfc Data. Nothing to install.
get_limit_surge_stocks 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_limit_surge_stocks 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_limit_surge_stocks. 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_limit_surge_stocks is provided by the Sfc Data MCP server (yangxinagfeng123/sfc-data-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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