코스피 버핏지수 = 코스피 시가총액 / 직전 4Q GDP 합 × 100 (%).
AI agents call get_kospi_buffett to retrieve information from Yummy Research without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves and computes a macroeconomic valuation metric (KOSPI Buffett Index) from existing data sources. It performs no writes, executes no commands, and has no destructive or financial side effects. It is a pure read/query operation returning a statistical ratio.
From the tool's definition 코스피 버핏지수 = 코스피 시가총액 / 직전 4Q GDP 합 × 100 (%) — this is a read-only calculation retrieving market capitalization and GDP data to compute a valuation index
Attacks that exploit this kind of access
코스피 버핏지수 = 코스피 시가총액 / 직전 4Q GDP 합 × 100 (%). It is categorised as a Read tool in the Yummy Research MCP Server, which means it retrieves data without modifying state.
Register the Yummy Research MCP server in PolicyLayer and add a rule for get_kospi_buffett: 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 Yummy Research. Nothing to install.
get_kospi_buffett 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_kospi_buffett 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_kospi_buffett. 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_kospi_buffett is provided by the Yummy Research MCP server (yeom/yummy-research-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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