AI agents call get_kline_data 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 is a read-only data retrieval tool for historical price/volume data. It queries financial market data without creating, modifying, deleting, or executing side effects. The tool is part of a broader data API (real-time quotes, rankings, financials) designed for market analysis and information access.
From the tool's definition Tool name 'get_kline_data' and description indicate it retrieves stock candlestick/K-line chart data (日线、周线、月线 = daily, weekly, monthly lines). The verb '获取' means 'get/retrieve'. No modification, deletion, or execution of external operations is described.
Attacks that exploit this kind of access
获取股票K线数据（支持日线、周线、月线等）. 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_kline_data: 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_kline_data 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_kline_data 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_kline_data. 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_kline_data 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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