指定した矩形範囲内のアメニティ（施設・設備）をGeoJSON形式で取得します。レストラン、病院、学校などのPOI（興味のある地点）データが含まれます。
AI agents call get_amenities to retrieve information from OSM-GeoJSON-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 publicly available OpenStreetMap data without side effects. It performs a read-only retrieval operation analogous to a search or fetch. No data is created, modified, deleted, or executed. The blast radius of misuse is minimal—an agent could retrieve excessive amenity data, but this causes no harm to systems or data integrity. Classification as Read is appropriate.
From the tool's definition Tool name 'get_amenities' and description indicate it 'retrieves' amenity data (restaurants, hospitals, schools, POI) within a specified rectangular area in GeoJSON format.
Documented attack patterns abuse exactly the kind of access get_amenities gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and OSM-GeoJSON-MCP-Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_amenities:
{
"version": "1",
"default": "deny",
"tools": {
"get_amenities": {}
}
}get_amenities is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
指定した矩形範囲内のアメニティ（施設・設備）をGeoJSON形式で取得します。レストラン、病院、学校などのPOI（興味のある地点）データが含まれます。. It is categorised as a Read tool in the OSM-GeoJSON-MCP-Server MCP Server, which means it retrieves data without modifying state.
Register the OSM-GeoJSON-MCP-Server MCP server in PolicyLayer and add a rule for get_amenities: 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 OSM-GeoJSON-MCP-Server. Nothing to install.
get_amenities 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_amenities 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_amenities. 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_amenities is provided by the OSM-GeoJSON-MCP-Server MCP server (shimizu/osm-geojson-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from OSM-GeoJSON-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.
11 OSM-GeoJSON-MCP-Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.