Each tool targets a distinct task: IATA code lookup (search_places), route pricing (search_flights), destination discovery (cheapest_destinations), and date-flexibility search (price_calendar). There is mild overlap between search_flights by month and price_calendar, and between search_flights and cheapest_destinations, but descriptions clarify the boundaries well.

All names are snake_case and descriptive, but the convention is not uniform: two use a search_ verb prefix while cheapest_destinations and price_calendar are noun phrases. Still readable and predictable enough to distinguish at a glance.

Four tools is a lean but well-scoped set covering code resolution, route pricing, destination discovery, and calendar pricing. Each earns its place, though the surface is on the thin side for a full flight-search domain.

The surface covers the core discovery workflow: resolve location, search a route, explore cheap destinations, and find cheap dates. Notable gaps include multi-city/round-trip specifics beyond trip_duration and no booking or price-alert operation, but these are workarounds rather than dead ends.