cron

name	cron
version	0.1.0
description	Schedule recurring or one-shot skill invocations using cron expressions. Persistence at $ADK_ROOT/data/cron-jobs.json (host responsibility). **Invocation only** — execute another naia skill, NOT shell commands (security: P0-1 fix).
tier	T3
triggers	["schedule","remind","cron","정기","예약"]
input_schema	{"action":{"type":"string","required":true,"enum":["add","list","remove","run-now"],"description":"Cron operation"},"name":{"type":"string","required":false,"pattern":"^[a-z0-9_-]+$","description":"Job name (lowercase alphanumeric + hyphen/underscore)"},"schedule":{"type":"string","required":false,"pattern":"^[0-9*/,\\- ]+$","description":"Cron expression (5 or 6 fields, e.g. '0 9 * * 1' = Mon 9am)"},"invoke":{"type":"object","required":false,"description":"Skill invocation envelope (NOT shell command). RCE 방지.","properties":{"skill":{"type":"string","pattern":"^[a-z0-9_-]+$","description":"Target skill name (must exist in catalog)"},"args":{"type":"object","description":"Args passed to target skill"}}}}
tags	["scheduler","automation","T3"]
author	naia-adk

cron

Tier T3 (deny-by-default) — 시간 기반 자동 실행은 사전 승인 절차가 더 엄격해야.

보안 정책 (P0-1 fix)

• ❌ Shell command 직접 실행 금지 — command: string 필드 제거됨
• ✓ Skill invocation 만 — invoke: { skill: "name", args: {...} } 형태로 다른 naia skill 호출
• ✓ Target skill의 tier 정책 cascade (예: cron으로 T2 skill 호출 → T2 approval 추가 발생)

Spec only — 실행은 naia-agent supervisor. Phase 4.0 spec; Phase 4.2 wires execution + cascade tier check.