Transform natural language descriptions into precise cron syntax with AI-powered validation and next-run previews.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install cron-writer
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install cron-writer using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Cron Writer?
Cron Writer is a developer-centric utility that removes the friction of writing and debugging cron syntax. By interpreting human language, it provides an intuitive way to generate schedule expressions for servers, cloud functions, and automation scripts. As one of the many specialized Openclaw Skills, it helps developers focus on logic rather than syntax by providing immediate, reliable scheduling outputs.
The tool is designed for speed and accuracy, ensuring that whether you are scheduling a simple daily backup or a complex monthly report, the syntax is perfectly formatted every time. It serves as a vital bridge in the development workflow, particularly when integrating with systems that rely on standard crontab formats.
Cron Writer Use Cases
- Rapidly creating cron jobs for server maintenance without syntax reference
- Configuring scheduled triggers for GitHub Actions or GitLab CI/CD
- Validating existing cron strings by converting them back to human-readable text
- Scheduling complex business logic such as every other Friday
- Testing edge-case schedules before deploying to production environments
How Cron Writer Works
- The user provides a descriptive string like every weekday at 9am to the CLI tool.
- The request is analyzed by an AI model trained to map temporal language to cron fields.
- The tool generates a standard cron expression such as 0 9 * * 1-5.
- It produces a plain-English translation to confirm the user intent.
- It calculates and displays the next five scheduled occurrences to verify the timeline.
Cron Writer Setup
Ensure you have Node.js 18 or higher installed on your system. There is no need for a permanent global installation as you can execute the tool directly using npx. Use the following command to generate a schedule:
npx ai-cron-gen "every day at midnight"
To see all available options and usage details, run:
npx ai-cron-gen --help
Cron Writer Data Schema & Taxonomy
| Data Component | Description |
|---|---|
| Input Syntax | Natural language string describing a time pattern |
| Output Format | Standard 5-field cron expression (e.g., * * * * *) |
| Validation | Human-readable explanation of the generated cron code |
| Preview Data | ISO-formatted list of the next 5 upcoming execution times |
Cron Writer Advanced Features
- Support for complex temporal patterns including ordinal dates like first Monday of the month
- Zero-config execution via npx making it an ideal addition to Openclaw Skills toolchains
- Detailed validation engine that predicts future run times to prevent scheduling errors
- Clean CLI output designed for easy copying and pasting into crontab or pipeline configs
- Lightweight footprint with no API keys or sign-ups required for core functionality
SKILL.md
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