cron

cron is a skill for Claude Code, Codex from smixs/agent-second-brain. It costs 68 tokens per session (1,176 once invoked), scanned A, original, MIT.

A scheduling and reminder helper that manages recurring or one-time jobs through a command-line tool. The jobs are reread regularly, run in a separate cron session, and send results to the user in Telegram.

In plain words
What is it for?
Use it to create, manage, or cancel reminders and recurring tasks such as daily summaries, inbox checks, and other scheduled prompts.
Why use it?
It removes the need to remember routine tasks or launch them manually at the right time.

Skill for Claude CodeCodex

Part of the vault plugin — 4 skills, 2 agents shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/smixs/agent-second-brain/cron
Any agent
npx skills add smixs/agent-second-brain --skill cron
Clone the repo
git clone --depth 1 https://github.com/smixs/agent-second-brain

Made for: Claude Code, Codex.

Or install vault, the plugin that ships this one along with the rest of its 4 skills, 2 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cron

README.md
[![agentmods](https://agentmods.dev/badge/skills/smixs/agent-second-brain/cron.svg)](https://agentmods.dev/skills/smixs/agent-second-brain/cron)
Your own site
<a href="https://agentmods.dev/skills/smixs/agent-second-brain/cron"><img src="https://agentmods.dev/badge/skills/smixs/agent-second-brain/cron.svg" alt="Measured on agentmods" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,176 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00068 $0.01176
Opus 5 $0.00034 $0.00588
Sonnet 5 $0.00014 $0.00235
Haiku 4.5 $0.00007 $0.00118

Measured 4d ago against content hash 4e1fcbbc373d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cron scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

vault/.claude/skills/cron/SKILL.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cron: расписания и напоминания

Ты управляешь своим расписанием сам — через CLI, который редактирует jobs.json. Бот перечитывает файл каждую минуту и запускает задания в отдельной cron-сессии. Результат запуска уходит пользователю в Telegram.

Команды

Рабочая директория — vault, проект уровнем выше (--project ..):

Таймзона. Время в --cron — местное; ВСЕГДА передавай --tz зоной ПОЛЬЗОВАТЕЛЯ. Никогда не хардкодь чужую зону. В примерах ниже стоит "${TZ:-UTC}" — это РАБОЧЕЕ значение: shell подставит env TZ (зона из конфигурации пользователя), а если она не задана — UTC. Чтобы зафиксировать конкретную зону, замени на IANA-имя (напр. Europe/Moscow). <offset> в --at — UTC-смещение зоны (+05:00, +03:00, +00:00), его подставляешь при вычислении времени.

# Повторяющееся по cron-выражению (время местное — указывай --tz)
uv run --project .. python -m d_brain.cron add \
  --prompt "Собери утреннюю сводку: вчерашний daily, goals недели" \
  --cron "0 9 * * *" --tz "${TZ:-UTC}" --id morning-brief

# Интервал в секундах
uv run --project .. python -m d_brain.cron add \
  --prompt "Проверь inbox в vault, новое разложи по карточкам. Если пусто — начни ответ с [SILENT]" \
  --every 3600

# Разовое напоминание: ВСЕГДА --at + --delete-after-run
uv run --project .. python -m d_brain.cron add \
  --prompt "Напомни про звонок с подрядчиком" \
  --at "2026-06-12T18:00:00<offset>" --delete-after-run   # <offset>, напр. +05:00

uv run --project .. python -m d_brain.cron list
uv run --project .. python -m d_brain.cron remove <id>
uv run --project .. python -m d_brain.cron enable <id>   # вернуть авто-отключённый

Ошибка → exit 2 и текст в stderr: прочитай и исправь аргументы.

Перевод естественного языка в расписание

Просьба Аргументы
«каждый день в 9» --cron "0 9 * * *" --tz "${TZ:-UTC}"
«по будням в 18:30» --cron "30 18 * * 1-5" --tz "${TZ:-UTC}"
«каждое воскресенье» --cron "0 10 * * 0" --tz "${TZ:-UTC}"
«каждый час» --every 3600
«каждые 15 минут» --every 900
«через 20 минут» вычисли ISO-время: now+20m → --at <ISO> --delete-after-run
«завтра в 15» --at "<завтра>T15:00:00<offset>" --delete-after-run

Read the full file on GitHub · 76 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 76 lines · 68 tokens per session scan A 4e1fcbbc373d

Subscribe to this mod's changes

cron is a skill published in the GitHub repository smixs/agent-second-brain (361 stars, last pushed 28d ago), licensed MIT. It adds 68 tokens to every session and 1,176 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

live-tutorial

Create an annotated MP4 tutorial from real screenshots of a workflow on the owner's computer. Use only when the owner explicitly asks for a tutorial video, not merely when they ask to watch an action happen live.

leon-ai/leon · 45 tokens

assimilate-popular-workflows

This skill should be used when the user asks to "find skills in the wild", "assimilate popular workflows", "discover SKILL.md files in repos", "research external skills", "find workflow patterns", "survey the skill landscape", "what skills exist out there", or wants to investigate public repositories for extractable…

a5c-ai/babysitter · 110 tokens

process-builder

Scaffold new babysitter process definitions following SDK patterns, proper structure, and best practices. Guides the 3-phase workflow from research to implementation.

a5c-ai/babysitter · 32 tokens

retrospect-external-babysitter-run

For a repository in the babysitter-users catalog, locate its babysitter processes and any committed runs (.a5c/runs/ /) and perform a retrospective on a chosen run -- what went well, what failed, process suggestions, quality of effect design, breakpoint patterns -- mirroring the /babysitter:retrospect workflow but…

a5c-ai/babysitter · 120 tokens

babysit

Orchestrate via @babysitter. Use this skill when asked to babysit a run, orchestrate a process or whenever it is called explicitly. (babysit, babysitter, orchestrate, orchestrate a run, workflow, etc.).

a5c-ai/babysitter · 55 tokens

session-memory

Mandatory memory persistence system across session resets using three markdown surfaces in .claude/cc10x/. Iron law - every workflow must load at start and update at end.

a5c-ai/babysitter · 37 tokens