AI agents call get_distance to retrieve information from Google Maps Platform MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Despite the empty description, the tool name and context strongly suggest this retrieves distance data without modifying, deleting, or executing external operations. It queries the Google Maps service for informational purposes only. Confidence is slightly reduced due to the missing description, but the pattern of sibling read-only tools and the 'get_' prefix are reliable indicators.
From the tool's definition Tool name 'get_distance' combined with sibling tools like 'find_place', 'get_directions', 'get_geocode', 'place_details', and 'place_nearby' indicates this is a query/retrieval tool.
Documented attack patterns abuse exactly the kind of access get_distance gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Google Maps Platform MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_distance:
{
"version": "1",
"default": "deny",
"tools": {
"get_distance": {}
}
}get_distance is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_distance. It is categorised as a Read tool in the Google Maps Platform MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Google Maps Platform MCP Server MCP server in PolicyLayer and add a rule for get_distance: 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 Google Maps Platform MCP Server. Nothing to install.
get_distance 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_distance 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_distance. 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_distance is provided by the Google Maps Platform MCP Server MCP server (neutrollized/google-maps-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Google Maps Platform MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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6 Google Maps Platform MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.