AI agents call get_region_code to retrieve information from Korea Real Estate MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool appears to retrieve or look up a region code from Korea's MOLIT real estate API, which is a non-destructive data retrieval operation. There are no side effects, data modifications, code execution, or financial transactions involved. The lack of description lowers confidence slightly, but the naming convention and context of sibling tools strongly indicate a Read classification.
From the tool's definition Tool name 'get_region_code' suggests retrieval of a region code; sibling tools include 'get_apartment_rent', 'get_apartment_trades', 'get_commercial_trade' which are all data retrieval operations.
Documented attack patterns abuse exactly the kind of access get_region_code gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Korea Real Estate MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_region_code:
{
"version": "1",
"default": "deny",
"tools": {
"get_region_code": {}
}
}get_region_code is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_region_code. It is categorised as a Read tool in the Korea Real Estate MCP MCP Server, which means it retrieves data without modifying state.
Register the Korea Real Estate MCP server in PolicyLayer and add a rule for get_region_code: 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 Real Estate MCP. Nothing to install.
get_region_code 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_region_code 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_region_code. 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_region_code is provided by the Korea Real Estate MCP server (tae0y/real-estate-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 26 Korea Real Estate MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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26 Korea Real Estate MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.