Get countries with names of a specific length.
AI agents call get_countries_by_length to retrieve information from Country 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 or queries data (country information filtered by name length) with no side effects. It matches the 'Read' category definition: retrieves or queries data with no side effects (search, list, get, fetch). The severity is low because misuse would only return informational data without impact on system state or user data.
From the tool's definition Tool name 'get_countries_by_length' and description 'Get countries with names of a specific length' indicate a query/lookup operation that retrieves country data based on a filter criterion (name length).
Attacks that exploit this kind of access
Get countries with names of a specific length. It is categorised as a Read tool in the Country MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Country MCP Server MCP server in PolicyLayer and add a rule for get_countries_by_length: 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 Country MCP Server. Nothing to install.
get_countries_by_length 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_countries_by_length 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_countries_by_length. 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_countries_by_length is provided by the Country MCP Server MCP server (llanterme/mcp-server). 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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