AI agents call country_by_region to retrieve information from UnClick without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
region | string | Yes |
Parameters from the server's own tool schema.
This tool performs a simple data lookup/query operation. It retrieves a list of countries filtered by region, with no ability to modify, delete, execute code, or affect financial systems. The blast radius of misuse is minimal—worst case an agent makes excessive API calls or reads publicly available geographic data.
From the tool's definition Tool description states 'Get countries by region' — a retrieval operation with no modification or side effects. Returns data from REST Countries API.
Attacks that exploit this kind of access
Get countries by region from REST Countries. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
country_by_region accepts 1 parameter: region. Required: region. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for country_by_region: 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 UnClick. Nothing to install.
country_by_region 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 country_by_region 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 country_by_region. 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.
country_by_region is provided by the UnClick MCP server (@unclick/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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