Overpass APIサーバーへの接続をテストします。すべての利用可能なサーバーに対して接続確認を行います。
AI agents call test_connection 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 merely verifies connectivity status to external services without reading, writing, executing, or modifying any data. It is a diagnostic/health-check operation with no side effects, placing it in the Read category with low severity. The blast radius of misuse is minimal—a user cannot harm systems or data through repeated connection tests.
From the tool's definition Tool name 'test_connection' and description indicating it performs connection testing to Overpass API servers ('接続をテストします' - tests connection, '接続確認を行います' - performs connection verification). No data retrieval, modification, deletion, or code execution occurs.
Documented attack patterns abuse exactly the kind of access test_connection 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 test_connection:
{
"version": "1",
"default": "deny",
"tools": {
"test_connection": {}
}
}test_connection is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Overpass APIサーバーへの接続をテストします。すべての利用可能なサーバーに対して接続確認を行います。. 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 test_connection: 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.
test_connection 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 test_connection 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 test_connection. 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.
test_connection 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.