This digest skill is legitimate in purpose, but it gives unpinned remote prompts, scheduled background jobs, and local delivery credentials enough control that users should review it before installing.
Install only if you are comfortable with a skill that fetches current prompt instructions from GitHub, stores Telegram or Resend credentials locally when enabled, and may create recurring scheduled jobs. Prefer stdout/on-demand mode if you do not need automatic delivery, inspect any cron entry it creates, and avoid adding third-party keys unless you need off-terminal delivery.