List all EU member state codes for VAT validation / Zobraziť všetky kódy členských štátov EÚ pre validáciu IČ DPH
AI agents call list_eu_member_states to retrieve information from VAT Validation 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 returns a static list of EU member state codes for reference purposes. It performs no modifications, deletions, code execution, or financial operations. It has minimal blast radius if misused by an AI agent, as the worst case is returning incorrect or incomplete state codes without harmful consequences.
From the tool's definition Tool name is 'list_eu_member_states' and description states 'List all EU member state codes' — a retrieval operation with no side effects. The description explicitly uses 'list,' a read operation.
Attacks that exploit this kind of access
List all EU member state codes for VAT validation / Zobraziť všetky kódy členských štátov EÚ pre validáciu IČ DPH. It is categorised as a Read tool in the VAT Validation MCP Server MCP Server, which means it retrieves data without modifying state.
Register the VAT Validation MCP Server MCP server in PolicyLayer and add a rule for list_eu_member_states: 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 VAT Validation MCP Server. Nothing to install.
list_eu_member_states 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 list_eu_member_states 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 list_eu_member_states. 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.
list_eu_member_states is provided by the VAT Validation MCP Server MCP server (jazib-but/check-vat-vies-mcp-jazib). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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