Download PlaceholderAPI for working and i recommend SimpleScoreboard or TAB plugin.

KStatsAPI is a simple and efficient stats tracking plugin for Bukkit/Spigot servers. It records player kills and deaths across different worlds (with shared world support), and integrates with PlaceholderAPI for easy stat display in scoreboards, menus, or other plugins. Data is saved to the config and auto-saves every minute.

📝 Detailed Feature List:

✅ Tracks kills and deaths per player and per world

🌍 Supports "shared worlds" for combined statistics

🔄 Auto-saves data every 60 seconds

🪦 Handles PlayerDeathEvents (victim + killer)

📊 PlaceholderAPI integration:

    %kstats_player_kills_<world name>%

    %kstats_player_deaths_<world name>%

    %kstats_last_action%

🔁 /kstats reload command to reload config

💾 Persistent storage in config.yml