AI agents call resolve_location to retrieve information from LetsFG without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool purely performs a lookup/conversion operation — mapping a city or airport name to IATA codes. It retrieves data with no side effects, no writes, no execution, and no financial implications. Misuse potential is minimal.
From the tool's definition Convert a city/airport name to IATA codes. Always call before search_flights if you only have a city name.
Attacks that exploit this kind of access
Convert a city/airport name to IATA codes. Always call before search_flights if you only have a city name. It is categorised as a Read tool in the LetsFG MCP Server, which means it retrieves data without modifying state.
Register the LetsFG MCP server in PolicyLayer and add a rule for resolve_location: 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 LetsFG. Nothing to install.
resolve_location 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 resolve_location 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 resolve_location. 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.
resolve_location is provided by the LetsFG MCP server (letsfg/letsfg). 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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