Search connecting flight options between a departure city and an arrival city on a specific date. Use city IATA 3-letter codes such as BJS, SHA, or LAX. This tool is for transfer or connection itineraries between cities, not for airport weather, airport facilities, or realtime tracking. Date must...
AI agents call getFlightTransferInfo to retrieve information from Variflight without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Even though getFlightTransferInfo only reads data, uncontrolled read access leaks sensitive information and racks up API costs — an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
Search connecting flight options between a departure city and an arrival city on a specific date. Use city IATA 3-letter codes such as BJS, SHA, or LAX. This tool is for transfer or connection itineraries between cities, not for airport weather, airport facilities, or realtime tracking. Date must be in YYYY-MM-DD format. For today. It is categorised as a Read tool in the Variflight MCP Server, which means it retrieves data without modifying state.
Register the Variflight MCP server in PolicyLayer and add a rule for getFlightTransferInfo: 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 Variflight. Nothing to install.
getFlightTransferInfo 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 getFlightTransferInfo 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 getFlightTransferInfo. 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.
getFlightTransferInfo is provided by the Variflight MCP server (@variflight-ai/variflight-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.