Returns aircraft filtered by transponder hex code. https://en.wikipedia.org/wiki/Mode_S_transponder
AI agents call get_icao_hex 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.
This tool retrieves aircraft information based on a transponder identifier (ICAO hex code). It performs a lookup query against existing data with no capability to modify, delete, or execute actions. The data returned is publicly available aircraft tracking information.
From the tool's definition Tool name 'get_icao_hex' and description 'Returns aircraft filtered by transponder hex code' indicate a query/retrieval operation with no data modification or side effects.
Attacks that exploit this kind of access
Returns aircraft filtered by transponder hex code. https://en.wikipedia.org/wiki/Mode_S_transponder. 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_icao_hex: 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_icao_hex 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_icao_hex 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_icao_hex. 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_icao_hex 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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