get_closest
AI agents call get_closest to retrieve information from Adsb Lol MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The 'get_closest' tool appears designed to query and return closest aircraft or flight data, consistent with the server's purpose of providing real-time aircraft tracking. While the description is empty, the function signature and server context strongly suggest a read-only retrieval operation with no side effects. Confidence is slightly reduced due to the missing description, but the pattern is clear.
From the tool's definition Tool name 'get_closest' combined with sibling tools that fetch flight data (get_arrivals_by_airport, get_departures_by_airport, get_flights_by_aircraft, get_callsign, get_faa_entry) indicates this retrieves aircraft proximity or location information.
Attacks that exploit this kind of access
get_closest. It is categorised as a Read tool in the Adsb Lol MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Adsb Lol MCP Server MCP server in PolicyLayer and add a rule for get_closest: 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 Adsb Lol MCP Server. Nothing to install.
get_closest 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_closest 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_closest. 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_closest is provided by the Adsb Lol MCP Server MCP server (x86ed/adsb.lol-mcp). 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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