This handles multi-channel contact management where one person can have SMS, WhatsApp, email, Telegram, and voice channels all tied to a single contact record. You get auto-creation when messaging new recipients, manual CRUD for contacts and their channels, and merge suggestions when duplicates show up. The phone introspection feature is handy: validates numbers, returns carrier info, and tells you which channels are available for that number. Supports TypeScript, Python, Go, Ruby, and PHP. The multi-channel model makes sense if you're building a platform that needs to reach people across different messaging systems without creating duplicate contact records.
npx skills add https://github.com/zavudev/zavu-skills --skill contacts-management