AI agents call get_daily_chart to retrieve information from Kiwoom without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns historical daily stock price and volume data—a pure read operation with no side effects. It aligns with the server's stated purpose of 'read-only access to Korean stock market information.' No data is created, modified, deleted, or executed; only retrieved. The low severity reflects minimal risk even if misused, as historical chart data is public market information.
From the tool's definition Tool name 'get_daily_chart' and description '일봉 차트 조회 (날짜별 시/고/저/종가, 거래량)' [daily chart inquiry (opening/high/low/closing prices and trading volume by date)] indicate retrieval of historical stock chart data with no modification capability.
Attacks that exploit this kind of access
일봉 차트 조회 (날짜별 시/고/저/종가, 거래량). It is categorised as a Read tool in the Kiwoom MCP Server, which means it retrieves data without modifying state.
Register the Kiwoom MCP server in PolicyLayer and add a rule for get_daily_chart: 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 Kiwoom. Nothing to install.
get_daily_chart 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_daily_chart 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_daily_chart. 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_daily_chart is provided by the Kiwoom MCP server (java-jaydev/kiwoom-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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