AI agents call search_news to retrieve information from Korea Stock Analyzer MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves news articles related to stocks. It performs a read-only operation that returns information without altering state, executing code, or producing irreversible changes. The severity is low because misuse (e.g., excessive queries, searching for sensitive topics) poses minimal risk compared to write, execute, or destructive operations.
From the tool's definition Tool name 'search_news' and description '종목 관련 최신 뉴스 검색' (search for latest news related to stocks) indicate data retrieval with no side effects.
Documented attack patterns abuse exactly the kind of access search_news gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Korea Stock Analyzer MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for search_news:
{
"version": "1",
"default": "deny",
"tools": {
"search_news": {}
}
}search_news is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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종목 관련 최신 뉴스 검색. It is categorised as a Read tool in the Korea Stock Analyzer MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Korea Stock Analyzer MCP Server MCP server in PolicyLayer and add a rule for search_news: 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 Korea Stock Analyzer MCP Server. Nothing to install.
search_news 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 search_news 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 search_news. 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.
search_news is provided by the Korea Stock Analyzer MCP Server MCP server (mrbaeksang/korea-stock-analyzer-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Korea Stock Analyzer MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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8 Korea Stock Analyzer MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.