AI agents call get_stock_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 retrieves historical stock chart data (Open, High, Low, Close, Volume) for analysis purposes. It is a read-only operation that queries existing market data without modifying, executing code, deleting data, or moving money. The description explicitly uses the Korean verb '조회합니다' (to look up/retrieve), confirming it is purely informational. No side effects or irreversible actions are possible.
From the tool's definition Tool name 'get_stock_chart' and description indicating it 'retrieves OHLCV chart data' (기준일자 기준 일봉 OHLCV 차트 데이터를 조회합니다) - a query operation that fetches historical stock price data with no side effects.
Attacks that exploit this kind of access
기준일자 기준 일봉 OHLCV 차트 데이터를 조회합니다 (최근 데이터부터 내림차순). 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_stock_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_stock_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_stock_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_stock_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_stock_chart is provided by the Kiwoom MCP server (kwonsw812/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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