{"service":"QuestGiver Historical Markers API","version":"2.0","endpoints":{"/markers/nearby":"Get markers near a location","/markers/{marker_id}":"Get specific marker","/markers/stats":"Get database statistics","/auth/google":"Google Sign-In (POST)","/auth/apple":"Apple Sign-In (POST)","/auth/refresh":"Refresh JWT token (POST)","/players":"Create a player account (POST, dev only)","/players/me":"Get/update player profile","/players/me/sync":"Sync local progress to server (PUT)","/players/{player_id}/profile":"Public player profile (GET)","/check-ins":"Submit a quest check-in (POST)","/markers/{marker_id}/check-ins":"Recent check-ins at a marker","/markers/{marker_id}/rating":"Submit or view ratings"}}