Agent skill

Cron Task Creator

by clacky-ai in clacky-ai/openclacky

Create, manage, and run scheduled automated tasks (cron jobs) in Clacky.

MITAuto-check passedProductivity & Automation

Install Cron Task Creator

skills CLI
$ npx skills add clacky-ai/openclacky --skill cron-task-creator -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install clacky-ai/openclacky cron-task-creator --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/clacky-ai/openclacky.git skills-src && mkdir -p .claude/skills && cp -r skills-src/lib/clacky/default_skills/cron-task-creator .claude/skills/cron-task-creator && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
cron-task-creator
GitHub stars
1.2k
Token cost
~2k tokens
SKILL.md length
407 words
Files
2
Skills in repo
20
Repo updated
First seen
Licence
MIT

At a glance

Create, manage, and run scheduled automated tasks (cron jobs) in Clacky.

  • Works in 8 steps: LIST — Show all tasks → CREATE — New task → EDIT — Modify an existing task → …
  • The user wants to create a new automated task
  • SKILL.md covers Architecture Overview, Cron Expression Quick Reference, Operations and Important Notes
  • Calls curl; reaches api.coingecko.com

What it does

Cron Task Creator is an agent skill from clacky-ai/openclacky. Create, manage, and run scheduled automated tasks (cron jobs) in Clacky. Use this skill whenever the user wants to create a new automated task or cron job, set up recurring automation, schedule something to run daily/weekly/hourly, view all scheduled tasks, edit an existing task prompt or cron schedule, enable or disable a task, delete a task, check task run history or logs, or run a task immediately via the WebUI. Trigger on phrases like cron, scheduled task, run every day, automate this; 定时任务, 每天自动, 定时执行.

Its SKILL.md is about 2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `evals/evals.json`).

It sits in Productivity & Automation, covering Scheduled and recurring tasks. The repository describes itself as: The most Token-efficient open-source AI Agent. The licence is MIT.

When your agent uses it

  • The user wants to create a new automated task
  • Set up recurring automation
  • Schedule something to run daily/weekly/hourly
  • View all scheduled tasks

Example prompts

  • “/cron-task-creator”

Workflow steps

8 steps, taken from the step headings in SKILL.md.

  1. LIST — Show all tasks
  2. CREATE — New task
  3. EDIT — Modify an existing task
  4. ENABLE / DISABLE — Toggle a task
  5. DELETE — Remove a task
  6. HISTORY — View run history
  7. RUN NOW — Execute immediately
  8. TEMPLATES — Browse common task templates

What it can do on your machine

Read from SKILL.md and the folder at commit 00ab936. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • curl

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • api.coingecko.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Cron Task Creator loads about 2k tokens when it runs. Until then it costs about 133 tokens; SKILL.md has 407 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~133
When it runs · the whole SKILL.md, loaded when a task matches
~2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from clacky-ai/openclacky at commit 00ab936, republished under its MIT licence (© clacky-ai). 407 words, ~2,048 tokens.

Download SKILL.mdSave it as .claude/skills/cron-task-creator/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
cron-task-creator
description
Create, manage, and run scheduled automated tasks (cron jobs) in Clacky. Use this skill whenever the user wants to create a new automated task or cron job, set up recurring automation, schedule something to run daily/weekly/hourly, view all scheduled tasks, edit an existing task prompt or cron schedule, enable or disable a task, delete a task, check task run history or logs, or run a task immediately via the WebUI. Trigger on phrases like cron, scheduled task, run every day, automate this; 定时任务, 每天自动, 定时执行.
name_zh
定时任务
description_zh
创建和管理定时自动任务,支持按天、周、小时执行,可随时编辑、启停或删除。
disable-model-invocation
false
user-invocable
true

Cron Task Creator

A skill for creating, managing, and running scheduled automated tasks in Clacky.

Architecture Overview

Storage:
  ~/.clacky/tasks/<name>.md      # Task prompt file (self-contained AI instruction)
  ~/.clacky/schedules.yml        # All scheduled plans (YAML list)
  ~/.clacky/logger/clacky-*.log  # Execution logs (daily rotation)

API Base: http://${CLACKY_SERVER_HOST}:${CLACKY_SERVER_PORT}

Cron-Tasks API (unified — manages task file + schedule together):
  GET    /api/cron-tasks              → list all cron tasks with schedule info
  POST   /api/cron-tasks              → create task + schedule {name, content, cron, enabled?}
  PATCH  /api/cron-tasks/:name        → update {content?, cron?, enabled?}
  DELETE /api/cron-tasks/:name        → delete task file + schedule
  POST   /api/cron-tasks/:name/run    → execute immediately (creates a new session)

Cron Expression Quick Reference

ExpressionMeaning
0 9 * * 1-5Weekdays at 09:00
0 9 * * *Every day at 09:00
0 */2 * * *Every 2 hours
*/30 * * * *Every 30 minutes
0 19 * * *Every day at 19:00
0 8 * * 1Every Monday at 08:00
0 0 1 * *First day of every month

Field order: minute hour day-of-month month day-of-week


Operations

1. LIST — Show all tasks
bash
curl -s http://${CLACKY_SERVER_HOST}:${CLACKY_SERVER_PORT}/api/cron-tasks

Display each task: name, cron schedule, enabled status, content preview.

If no tasks exist, inform the user and offer to create one or show templates.

Key tip: Remind the user that the Clacky WebUI Task Panel (sidebar → Tasks) also shows all tasks and supports direct management.


2. CREATE — New task

Step 1: Gather required info (only ask for what's missing)

  • What should the task DO? (goal, behavior, output format)
  • How often should it run? (or is it manual-only without a schedule?)
  • Any specific parameters? (URLs, file paths, output location, language)

Step 2: Generate task name

  • Rule: only [a-z0-9_-], lowercase, no spaces
  • Examples: daily_report, price_monitor, weekly_summary

Step 3: Write the task prompt

The prompt must be:

  • Self-contained: the agent running it has zero prior context — include everything needed
  • Written as direct instructions to an AI agent (imperative, not conversational)
  • Detailed: include URLs, file paths, output format, language, expected output location

Good task prompt example:

You are a price monitoring assistant. Complete the following task:

## Goal
Check the current BTC price on CoinGecko, compare with yesterday's price, and log an alert if the change exceeds 5%.

## Steps
1. Fetch https://api.coingecko.com/api/v3/simple/price?ids=bitcoin&vs_currencies=usd&include_24hr_change=true
2. Parse the JSON response to get current price and 24h change
3. If |change| > 5%, write an alert to ~/price_alerts/alert_YYYY-MM-DD.txt
4. Print the current price and change percentage

Execute immediately.

Step 4: Create via API

bash
curl -s -X POST http://${CLACKY_SERVER_HOST}:${CLACKY_SERVER_PORT}/api/cron-tasks \
  -H "Content-Type: application/json" \
  -d '{
    "name": "task_name",
    "content": "task prompt content...",
    "cron": "0 9 * * *",
    "enabled": true
  }'

Step 5: Confirm creation

✅ Task created successfully!

📋 Task name: daily_standup
⏰ Schedule: Weekdays at 09:00 (cron: 0 9 * * 1-5)

View and manage this task in the Clacky WebUI → Tasks panel. Click ▶ Run to execute immediately.

Show full SKILL.md (167 more words)Show less
3. EDIT — Modify an existing task

Step 1: Identify the task (if unclear, LIST first and ask)

Step 2: Show current state via LIST or ask user to confirm

Step 3: Update via API

bash
# Update content only
curl -s -X PATCH http://${CLACKY_SERVER_HOST}:${CLACKY_SERVER_PORT}/api/cron-tasks/task_name \
  -H "Content-Type: application/json" \
  -d '{"content": "new prompt content..."}'

# Update cron schedule only
curl -s -X PATCH http://${CLACKY_SERVER_HOST}:${CLACKY_SERVER_PORT}/api/cron-tasks/task_name \
  -H "Content-Type: application/json" \
  -d '{"cron": "0 8 * * 1-5"}'

# Update both
curl -s -X PATCH http://${CLACKY_SERVER_HOST}:${CLACKY_SERVER_PORT}/api/cron-tasks/task_name \
  -H "Content-Type: application/json" \
  -d '{"content": "...", "cron": "0 8 * * 1-5"}'

Step 4: Confirm changes

✅ Task updated!
📋 daily_standup
  Schedule: 0 9 * * 1-5 → 0 8 * * 1-5 (now weekdays at 08:00)

4. ENABLE / DISABLE — Toggle a task
bash
# Disable
curl -s -X PATCH http://${CLACKY_SERVER_HOST}:${CLACKY_SERVER_PORT}/api/cron-tasks/task_name \
  -H "Content-Type: application/json" \
  -d '{"enabled": false}'

# Enable
curl -s -X PATCH http://${CLACKY_SERVER_HOST}:${CLACKY_SERVER_PORT}/api/cron-tasks/task_name \
  -H "Content-Type: application/json" \
  -d '{"enabled": true}'

Confirm:

✅ daily_standup has been disabled.
   To re-enable: say "enable daily_standup"

5. DELETE — Remove a task

Always confirm before deleting (unless the user has explicitly said to delete):

⚠️ Are you sure you want to delete daily_standup? This cannot be undone.
bash
curl -s -X DELETE http://${CLACKY_SERVER_HOST}:${CLACKY_SERVER_PORT}/api/cron-tasks/task_name

6. HISTORY — View run history

Read the daily log files directly:

bash
grep "task_name" ~/.clacky/logger/clacky-$(date +%Y-%m-%d).log | tail -20

Or search across recent days:

bash
grep -h "task_name" ~/.clacky/logger/clacky-*.log | tail -30

Display format:

📊 Run History: ai_news_x_daily

Mar 10  19:00  ❌ Failed  — JSON::ParserError: unexpected end of input
Mar 09  19:00  ✅ Success — took 1m 42s
Mar 08  19:00  ✅ Success — took 2m 10s

7. RUN NOW — Execute immediately
bash
curl -s -X POST http://${CLACKY_SERVER_HOST}:${CLACKY_SERVER_PORT}/api/cron-tasks/task_name/run

This creates a new session. Tell the user:

▶️ Task started in a new session.
   View it in the Clacky WebUI → Sessions panel.

8. TEMPLATES — Browse common task templates

When user says "what templates are there" or "what can I automate":

📚 Common Task Templates — pick one to get started:

1. 📰 AI News Digest       — Daily fetch of AI news from X/RSS, generate Markdown report
2. 💰 Price Monitor        — Check crypto/stock prices on a schedule, log alerts on anomalies
3. 📊 Weekly Work Summary  — Every Monday, summarize last week's work into a report
4. 🌤 Weather Reminder     — Fetch weather every morning and save to file
5. 🔍 Competitor Monitor   — Periodically scrape competitor sites for changes
6. 📝 Journal Prompt       — Evening reminder to journal with daily reflection questions
7. 🔗 Link Health Check    — Periodically verify specified URLs are accessible
8. 📂 File Backup          — Regularly back up a specified directory to another location

Tell me which one interests you, or describe your own use case!

Important Notes

  • Task names: only [a-z0-9_-], no spaces, no uppercase
  • Task prompt files must be self-contained — the executing agent has no prior memory
  • Clacky server must be running for cron to trigger automatically (checked every minute)
  • The WebUI Task Panel is the preferred interface for managing tasks — always remind the user to check it after changes

© clacky-ai, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file in lib/clacky/default_skills/cron-task-creator of clacky-ai/openclacky.

  • SKILL.md
  • evals/evals.json

Open the folder on GitHubat commit 00ab936

Compare with similar skills

Cron Task Creator next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Cron Task Creator compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Cron Task Creator this skillclacky-ai/openclacky1.2k—~2kAutomated safety check: PassMIT
ScheduleTinyAGI/tinyagi3.6k—~1.4kAutomated safety check: PassMIT
Send User MessageTinyAGI/tinyagi3.6k—~829Automated safety check: PassMIT
Cron Opsczl9707/build-your-own-openclaw1.9k—~593Automated safety check: PassMIT
X Bookmarkssharbelxyz/x-bookmarks289—~2kAutomated safety check: NotesNone
Wp Wpcli And OpsAutomattic/agent-skills2112 repos~988Automated safety check: PassNone

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Questions about Cron Task Creator

What does Cron Task Creator do?

Create, manage, and run scheduled automated tasks (cron jobs) in Clacky. Cron Task Creator is an agent skill from clacky-ai/openclacky. Create, manage, and run scheduled automated tasks (cron jobs) in Clacky.

When should I use Cron Task Creator?

Cron Task Creator fits situations like: the user wants to create a new automated task; set up recurring automation; schedule something to run daily/weekly/hourly; view all scheduled tasks.

How do I install Cron Task Creator in Claude Code?

Run `npx skills add clacky-ai/openclacky --skill cron-task-creator -a claude-code`. Or copy the skill folder (lib/clacky/default_skills/cron-task-creator in clacky-ai/openclacky) into .claude/skills/cron-task-creator in your project. Claude Code loads it when a task matches its description.

How do I install Cron Task Creator in Codex?

Run `npx skills add clacky-ai/openclacky --skill cron-task-creator -a codex`. Or copy the skill folder (lib/clacky/default_skills/cron-task-creator in clacky-ai/openclacky) into .agents/skills/cron-task-creator in your project. Codex loads it when a task matches its description.

Can I use Cron Task Creator in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add clacky-ai/openclacky --skill cron-task-creator -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/cron-task-creator, .gemini/skills/cron-task-creator, .github/skills/cron-task-creator and .opencode/skills/cron-task-creator in your project.

What does Cron Task Creator need to run?

Going by SKILL.md and its folder, Cron Task Creator needs the command-line tools its instructions call (curl).

Does Cron Task Creator access the network?

SKILL.md names 1 domain. In commands or code: api.coingecko.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Cron Task Creator safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Cron Task Creator use?

Cron Task Creator is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Cron Task Creator use?

About 2k tokens (SKILL.md is roughly 8.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Cron Task Creator?

Skills that share tags, products or a category with Cron Task Creator: Schedule (TinyAGI/tinyagi, 3.6k stars), Send User Message (TinyAGI/tinyagi, 3.6k stars), Cron Ops (czl9707/build-your-own-openclaw, 1.9k stars) and X Bookmarks (sharbelxyz/x-bookmarks, 289 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Cron Task Creator?

clacky-ai (a GitHub organization) maintains it in clacky-ai/openclacky, which has 1,204 GitHub stars. The repository holds 20 skills in this directory. The repository was last updated on October 9, 2026.

Source: clacky-ai/openclacky on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.