/cron
Schedule reminders and recurring tasks.
$ npx -y skills add volcengine/openviking --skill cron --agent claude-codeHow it fires
How this skill gets triggered: by you, by Claude, or both.
- Fires itselfAuto-invocation. Claude auto-loads it when your prompt matches the work.Auto-invocation is when the right skill fires by itself at the right moment, driven by a FLOW.md router and a hook, instead of you invoking it by name. It is the difference between a skill being installed and a skill actually getting used.Read the full definition →
- You can call itInvoke it directly when you want it.
- Slash command
/cron
Context preview
The summary Claude sees to decide when to auto-load this skill.
Schedule reminders and recurring tasks.
SKILL.md
cron.SKILL.mdname: cron description: Schedule reminders and recurring tasks.
Cron
Use the `cron` tool to schedule reminders or recurring tasks.
Three Modes
1. **Reminder** - message is sent directly to user 2. **Task** - message is a task description, agent executes and sends result 3. **One-time** - runs once at a specific time, then auto-deletes
Examples
Fixed reminder:
cron(action="add", message="Time to take a break!", every_seconds=1200)
Dynamic task (agent executes each time):
cron(action="add", message="Check HKUDS/vikingbot GitHub stars and report", every_seconds=600)
One-time scheduled task (compute ISO datetime from current time):
cron(action="add", message="Remind me about the meeting", at="<ISO datetime>")
List/remove:
cron(action="list") cron(action="remove", job_id="abc123")
Time Expressions
| User says | Parameters | |-----------|------------| | every 20 minutes | every_seconds: 1200 | | every hour | every_seconds: 3600 | | every day at 8am | cron_expr: "0 8 * * *" | | weekdays at 5pm | cron_expr: "0 17 * * 1-5" | | at a specific time | at: ISO datetime string (compute from current time) |
Self-evolving Context Database for AI Agents. Unify Agent Memory, Knowledge RAG and Skills.
Other skills on openviking.
- /github-proxy
GitHub 国内访问加速 skill,使用 githubproxy.cc 代理加速 GitHub 仓库克隆、文件下载、Raw 文件访问等操作。使用场景:(1) 需要 git clone GitHub 仓库时加速,(2) 下载 GitHub Release 文件、Raw 文件、Archive 压缩包时加速,(3) 任何需要访问 GitHub 资源但速度慢的场景
Open skill - /github
Interact with GitHub using the `gh` CLI. Use `gh issue`, `gh pr`, `gh run`, and `gh api` for issues, PRs, CI runs, and advanced queries.
Open skill - /opencode
Monitor and manage your OpenCode tasks using helper scripts.
Open skill - /skill-creator
Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Open skill - /summarize
Summarize or extract text/transcripts from URLs, podcasts, and local files (great fallback for “transcribe this YouTube/video”).
Open skill - /tmux
Remote-control tmux sessions for interactive CLIs by sending keystrokes and scraping pane output.
Open skill

