Agent skill

Cron Management

by grandamenium in grandamenium/cortextos

Manage scheduled tasks (crons). An agent skill from grandamenium/cortextos.

MITAuto-check passedProductivity & Automation

Install Cron Management

skills CLI

$ npx skills add grandamenium/cortextos --skill cron-management -a claude-code

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

GitHub CLI

$ gh skill install grandamenium/cortextos cron-management --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/grandamenium/cortextos.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/cron-management .claude/skills/cron-management && 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/

Paste into Claude Code

Install the "cron-management" agent skill from https://github.com/grandamenium/cortextos/tree/main/skills/cron-management into .claude/skills/cron-management/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cron-management", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/grandamenium/cortextos/tree/main/skills/cron-management

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add grandamenium/cortextos --skill cron-management -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install grandamenium/cortextos cron-management --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/grandamenium/cortextos.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/cron-management .agents/skills/cron-management && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "cron-management" agent skill from https://github.com/grandamenium/cortextos/tree/main/skills/cron-management into .agents/skills/cron-management/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cron-management", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add grandamenium/cortextos --skill cron-management -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install grandamenium/cortextos cron-management --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/grandamenium/cortextos.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/cron-management .cursor/skills/cron-management && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "cron-management" agent skill from https://github.com/grandamenium/cortextos/tree/main/skills/cron-management into .cursor/skills/cron-management/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cron-management", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/grandamenium/cortextos.git --path skills/cron-management

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add grandamenium/cortextos --skill cron-management -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install grandamenium/cortextos cron-management --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/grandamenium/cortextos.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/cron-management .gemini/skills/cron-management && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "cron-management" agent skill from https://github.com/grandamenium/cortextos/tree/main/skills/cron-management into .gemini/skills/cron-management/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cron-management", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install grandamenium/cortextos cron-management

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add grandamenium/cortextos --skill cron-management -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/grandamenium/cortextos.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/cron-management .github/skills/cron-management && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "cron-management" agent skill from https://github.com/grandamenium/cortextos/tree/main/skills/cron-management into .github/skills/cron-management/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cron-management", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add grandamenium/cortextos --skill cron-management -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install grandamenium/cortextos cron-management --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/grandamenium/cortextos.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/cron-management .opencode/skills/cron-management && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "cron-management" agent skill from https://github.com/grandamenium/cortextos/tree/main/skills/cron-management into .opencode/skills/cron-management/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cron-management", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: cron-management
GitHub stars: 101
Token cost: ~1k tokens
SKILL.md length: 373 words
Files: 1
Skills in repo: 55
Repo updated: Sep 23, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Manage scheduled tasks (crons). An agent skill from grandamenium/cortextos.

Works in 3 steps: cortextos bus list-crons $CTX_AGENT_NAME… → cortextos bus get-cron-log… → If PTY injection is failing, check the…
: setting up crons on session start
SKILL.md covers On Session Start, Adding a New Cron, Removing a Cron and Updating a Cron, plus 4 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Cron Management is an agent skill from grandamenium/cortextos. Manage scheduled tasks (crons). Use when: setting up crons on session start, creating new recurring tasks, or troubleshooting scheduled tasks.

Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Productivity & Automation, covering Scheduled and recurring tasks. The licence is MIT.

When your agent uses it

: setting up crons on session start
Creating new recurring tasks
Troubleshooting scheduled tasks

Example prompts

“/cron-management”

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

cortextos bus list-crons $CTX_AGENT_NAME — confirm it is registered and has a next_fire_at
cortextos bus get-cron-log $CTX_AGENT_NAME — check for status: retried or status: failed entries
If PTY injection is failing, check the daemon log: ~/.cortextos/$CTX_INSTANCE_ID/logs/$CTX_AGENT_NAME/

What it can do on your machine

Read from SKILL.md and the folder at commit 6f93838. 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
No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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 Management loads about 1k tokens when it runs. Until then it costs about 40 tokens; SKILL.md has 373 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~40
When it runs · the whole SKILL.md, loaded when a task matches: ~1k

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 grandamenium/cortextos at commit 6f93838, republished under its MIT licence (© grandamenium). 373 words, ~1,003 tokens.

Download SKILL.mdSave it as .claude/skills/cron-management/SKILL.md (or your agent's skills folder).

name: cron-management
description: Manage scheduled tasks (crons). Use when: setting up crons on session start, creating new recurring tasks, or troubleshooting scheduled tasks.

Cron Management

Your scheduled tasks are daemon-managed external crons. They are stored in ${CTX_ROOT}/state/{agent}/crons.json and scheduled by the cortextOS daemon. Crons survive agent restarts, context compactions, and daemon restarts automatically — you do NOT need to recreate them on session start.

On Session Start

Check that your crons are registered. You do not need to recreate them.

bash

# List all crons with next_fire_at
cortextos bus list-crons $CTX_AGENT_NAME

If a cron is missing (not in the list), add it:

bash

cortextos bus add-cron $CTX_AGENT_NAME <name> <interval|cron-expr> "<prompt>"
# Examples:
cortextos bus add-cron $CTX_AGENT_NAME heartbeat 4h "Run heartbeat protocol"
cortextos bus add-cron $CTX_AGENT_NAME morning-briefing "0 9 * * *" "Send morning briefing"

Adding a New Cron

bash

# Interval shorthand (s/m/h/d/w)
cortextos bus add-cron $CTX_AGENT_NAME <name> <interval> "<prompt>"

# 5-field cron expression (minute hour dom month dow)
cortextos bus add-cron $CTX_AGENT_NAME <name> "<cron-expr>" "<prompt>"

The cron is written to crons.json atomically and the scheduler is reloaded. No /loop call needed — the daemon fires crons directly into your PTY.

manualFireDisabled: If you want a cron to only fire on schedule (not manually test-fired from the dashboard), set manualFireDisabled: true in the definition. Contact the operator or use the dashboard edit form to set this flag.

Removing a Cron

bash

cortextos bus remove-cron $CTX_AGENT_NAME <name>

Updating a Cron

Use the dashboard (/workflows/[agent]/[name]) or the bus command (if available):

bash

cortextos bus update-cron $CTX_AGENT_NAME <name> --schedule <new-schedule>
cortextos bus update-cron $CTX_AGENT_NAME <name> --prompt "<new-prompt>"
cortextos bus update-cron $CTX_AGENT_NAME <name> --enabled false

Checking Execution History

bash

# Recent execution log (fired / retried / failed entries)
cortextos bus get-cron-log $CTX_AGENT_NAME

# Filtered to a specific cron
cortextos bus get-cron-log $CTX_AGENT_NAME --cron <name>

Cron Expiry

External crons do not expire. They fire on schedule until disabled or removed. The old 3-day /loop expiry no longer applies.

Show full SKILL.md (200 more words)Show less

Troubleshooting

Cron not firing:

cortextos bus list-crons $CTX_AGENT_NAME — confirm it is registered and has a next_fire_at
cortextos bus get-cron-log $CTX_AGENT_NAME — check for status: retried or status: failed entries
If PTY injection is failing, check the daemon log: ~/.cortextos/$CTX_INSTANCE_ID/logs/$CTX_AGENT_NAME/

Cron fires but agent does not react:

The daemon injects [CRON: <name>] <prompt> into your PTY. If you see this in your conversation history but did not act, it was an older session.
Check daemon log; PTY injection retries 3 times (1s/4s/16s backoff).

crons.json corrupted:

readCrons automatically falls back to crons.json.bak on parse failure.
If both files are bad, add crons back via cortextos bus add-cron.
See CRONS_MIGRATION_GUIDE.md for full recovery procedures.

Crons disappeared after daemon reload (reload-to-empty):

The daemon's lastGoodSchedule protection keeps crons firing in memory during transient corruption.
Check stderr logs for WARNING: reload produced empty schedule to confirm this triggered.
Repair crons.json and the scheduler will pick up the fix on the next reload.

Migration from config.json (legacy)

If your agent was set up before the external-crons migration, your crons lived in config.json. The daemon auto-migrates them to crons.json on first boot. A .crons-migrated marker file prevents re-runs. See CRONS_MIGRATION_GUIDE.md for details and manual migration instructions.

Files

Just SKILL.md in skills/cron-management of grandamenium/cortextos.

Open the folder on GitHubat commit 6f93838

Compare with similar skills

Cron Management 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 Management compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Cron Management this skillgrandamenium/cortextos	101	—	~1k	Automated safety check: Pass	MIT	18 days ago
ScheduleTinyAGI/tinyagi	3.6k	—	~1.4k	Automated safety check: Pass	MIT	6 mo ago
Send User MessageTinyAGI/tinyagi	3.6k	—	~829	Automated safety check: Pass	MIT	6 mo ago
Cron Opsczl9707/build-your-own-openclaw	1.9k	—	~593	Automated safety check: Pass	MIT	3 mo ago
X Bookmarkssharbelxyz/x-bookmarks	289	—	~2k	Automated safety check: Notes	None	7 mo ago
Wp Wpcli And OpsAutomattic/agent-skills	211	2 repos	~988	Automated safety check: Pass	None	8 mo ago

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Questions about Cron Management

What does Cron Management do?

Manage scheduled tasks (crons). An agent skill from grandamenium/cortextos. Cron Management is an agent skill from grandamenium/cortextos. Manage scheduled tasks (crons).

When should I use Cron Management?

Cron Management fits situations like: : setting up crons on session start; creating new recurring tasks; troubleshooting scheduled tasks.

How do I install Cron Management in Claude Code?

Run `npx skills add grandamenium/cortextos --skill cron-management -a claude-code`. Or copy the skill folder (skills/cron-management in grandamenium/cortextos) into .claude/skills/cron-management in your project. Claude Code loads it when a task matches its description.

How do I install Cron Management in Codex?

Run `npx skills add grandamenium/cortextos --skill cron-management -a codex`. Or copy the skill folder (skills/cron-management in grandamenium/cortextos) into .agents/skills/cron-management in your project. Codex loads it when a task matches its description.

Can I use Cron Management 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 grandamenium/cortextos --skill cron-management -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-management, .gemini/skills/cron-management, .github/skills/cron-management and .opencode/skills/cron-management in your project.

What does Cron Management need to run?

SKILL.md names no scripts, command-line tools or credentials: Cron Management is instructions for the agent only.

Does Cron Management access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Cron Management 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 Management use?

Cron Management 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 Management use?

About 1k tokens (SKILL.md is roughly 4k 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 Management?

Skills that share tags, products or a category with Cron Management: 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 Management?

grandamenium (a GitHub user) maintains it in grandamenium/cortextos, which has 101 GitHub stars. The repository holds 55 skills in this directory. The repository was last updated on September 23, 2026.

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

Install Cron Management

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Cron Management

On Session Start

Adding a New Cron

Removing a Cron

Updating a Cron

Checking Execution History

Cron Expiry

Troubleshooting

Migration from config.json (legacy)

Files

Compare with similar skills

Similar skills

More from grandamenium/cortextos

Related

Questions about Cron Management