AI agents call get_lowest_price_top20 to retrieve information from Opinet without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays fuel price information from Korea Petroleum Corporation's Opinet API. It queries existing data about the lowest-priced gas stations nationwide or by region, returning read-only details (IDs, names, addresses, prices, coordinates). There are no side effects, no data modification, no execution of external operations, and no financial transactions.
From the tool's definition Tool name 'get_lowest_price_top20' and description '조회합니다' (query/retrieve) indicate data retrieval. Returns fuel station information: station ID, name, address, price, and coordinates. No modification, deletion, execution, or financial transaction capability.
Attacks that exploit this kind of access
전국 또는 특정 지역의 최저가 주유소를 조회합니다 (최대 20곳). 결과에는 주유소ID, 상호, 주소, 가격, KATEC 좌표가 포함됩니다. It is categorised as a Read tool in the Opinet MCP Server, which means it retrieves data without modifying state.
Register the Opinet MCP server in PolicyLayer and add a rule for get_lowest_price_top20: 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 Opinet. Nothing to install.
get_lowest_price_top20 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_lowest_price_top20 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_lowest_price_top20. 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_lowest_price_top20 is provided by the Opinet MCP server (kimjintak/opinet-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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