Sunlith is an Apache-2.0 Android calendar your coding assistant can edit from your computer
Shown on HN Nov 5, a Node.js companion pairs with the phone over Wi-Fi or Tailscale via pinned-certificate HTTPS so Codex, Claude, Cursor, Grok, OpenCode or Pi can read, create, change and delete events on only the calendars you share, with no Google account or subscription. It's early: the APK is dev-signed and there's no HTTP MCP gateway yet.