{"name":"haversine","title":"Great-Circle Distance (haversine)","category":"developer","description":"Distance (km/mi/nautical) and initial bearing between two lat/lon points.","price_usd":0.001,"input_schema":{"type":"object","properties":{"lat1":{"type":"number","description":"Latitude of point 1 (-90..90)"},"lon1":{"type":"number","description":"Longitude of point 1 (-180..180)"},"lat2":{"type":"number","description":"Latitude of point 2 (-90..90)"},"lon2":{"type":"number","description":"Longitude of point 2 (-180..180)"}},"additionalProperties":false,"required":["lat1","lon1","lat2","lon2"]}}