Plugs Claude into CityWalkplan's walking itinerary generator for 50+ cities. You can query available destinations, generate day-by-day walking routes based on trip length and pace, and retrieve curated stops with real coordinates and descriptions. The catalog is hand-picked, not AI-generated, and covers everything from Tokyo and Paris to Lisbon and Bangkok. Useful when you're helping someone plan a trip and want to group sights by neighborhood instead of bouncing across town. No authentication required. The API returns structured itineraries that you can present directly or modify based on specific interests or constraints the user mentions.