get_market_overview
AI agents call get_market_overview to retrieve information from Kookmin Stock without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves Korean stock market overview data with no apparent side effects, making it a Read category tool. While the description is empty, the naming convention and sibling tools' patterns (all get_* functions) provide strong evidence of read-only behavior. Severity is low because accessing market data poses minimal risk even if misused by an AI agent.
From the tool's definition Tool name 'get_market_overview' on a stock market data server; sibling tools include 'get_stock_quote', 'get_recent_news', 'get_fundamentals', and 'recommend_buys', all of which are clearly read-only data retrieval operations.
Attacks that exploit this kind of access
get_market_overview. It is categorised as a Read tool in the Kookmin Stock MCP Server, which means it retrieves data without modifying state.
Register the Kookmin Stock MCP server in PolicyLayer and add a rule for get_market_overview: 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 Kookmin Stock. Nothing to install.
get_market_overview 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_market_overview 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_market_overview. 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_market_overview is provided by the Kookmin Stock MCP server (jooseunghyeon/kookmin-university-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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