Get the complete list of values for a variable when metadata only shows first 20. Useful for: - Finding specific region codes (KU091=Helsinki, MK01=Uusimaa region) - Getting all available years (1972-2024) - Finding specific category codes Common region codes: - SSS = Whole country (Finland) - MK...
AI agents call get_variable_values to retrieve information from Tilastokeskus StatFin MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and lists metadata values from the StatFin database without modifying, executing, or deleting any data. It is a pure read operation that provides information about available variable values to help users construct queries. The search functionality is filtering-only, not transformative. No side effects, no code execution, no data modification.
From the tool's definition Tool description states 'Get the complete list of values for a variable' and 'Finding specific region codes', 'Getting all available years', 'Finding specific category codes' — all retrieval operations.
Documented attack patterns abuse exactly the kind of access get_variable_values gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Tilastokeskus StatFin MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_variable_values:
{
"version": "1",
"default": "deny",
"tools": {
"get_variable_values": {}
}
}get_variable_values is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the complete list of values for a variable when metadata only shows first 20. Useful for: - Finding specific region codes (KU091=Helsinki, MK01=Uusimaa region) - Getting all available years (1972-2024) - Finding specific category codes Common region codes: - SSS = Whole country (Finland) - MK01-MK19 = Regions (maakunta) - KU091 = Helsinki, KU049 = Espoo, KU837 = Tampere Use search parameter to filter: search=. It is categorised as a Read tool in the Tilastokeskus StatFin MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Tilastokeskus StatFin MCP Server MCP server in PolicyLayer and add a rule for get_variable_values: 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 Tilastokeskus StatFin MCP Server. Nothing to install.
get_variable_values 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_variable_values 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_variable_values. 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_variable_values is provided by the Tilastokeskus StatFin MCP Server MCP server (markusl/statfin-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Tilastokeskus StatFin MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
7 Tilastokeskus StatFin MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.