hour-meter
Track elapsed time from a set epoch with tamper-evident locking. Like an analog Hobbs meter but digital. Use for tracking uptime, service hours, time since events, sobriety counters, project duration, equipment runtime. Supports create, lock (seal), check, verify against external hash, list, and export operations.
Why use this skill?
Track uptime, service intervals, and personal milestones with this OpenClaw skill. Features tamper-evident locking and robust cryptographic verification.
Install via CLI (Recommended)
clawhub install openclaw/skills/skills/rm289/hour-meterWhat This Skill Does
The hour-meter skill acts as a digital, high-precision equivalent of an analog Hobbs meter or a classic odometer. It is designed to track time relative to specific epoch-based milestones. Whether you need to monitor how much time has passed since a significant life event (count up), track the duration until a future deadline (count down), or calculate the progress across a fixed temporal span (count between), this tool provides a reliable interface. A standout feature is its tamper-evident locking mechanism, which generates a cryptographic checksum (a paper code) to ensure the integrity of your logged data. If someone alters the internal clock or data files, the paper code verification will fail, guaranteeing an immutable record of your tracked activities.
Installation
To integrate this functionality into your environment, run the following command within your terminal while the OpenClaw agent is active:
clawhub install openclaw/skills/skills/rm289/hour-meter
Ensure that you have sufficient permissions for the installation directory, as the skill creates a witness log in your home directory to maintain persistence.
Use Cases
This skill is highly versatile for both personal and professional applications. Individuals use it to track long-term habits, such as sobriety, smoking cessation, or fitness streaks. For professionals, it is ideal for managing equipment runtime—monitoring when specific hardware requires maintenance based on operating hours. Project managers utilize it to track project longevity or countdowns toward product launches. The 'count between' mode is particularly useful for career tracking or calculating interest and accrual periods over fixed, long-term durations.
Example Prompts
- "OpenClaw, start a new hour-meter called 'coding-sprint' with the start time set to today at 9:00 AM."
- "Check the status of my 'maintenance' meter and tell me how much time is left until the next service interval."
- "Verify the integrity of my 'smoking-quit' meter using the paper code 318B-3229-C523-2F9C-V."
Tips & Limitations
Always store your paper codes in a secure, physical location, as they are the only way to verify data integrity offline. If you lose your paper code, you cannot verify if a file has been tampered with. The auto-save witness file (~/.openclaw/meter-witness.txt) is an excellent backup but should not be your sole point of failure. If you are using the SendGrid integration, ensure your API keys are managed using environment variables rather than hardcoding them, and test your emails to avoid triggering spam filters.
Metadata
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Find the right skillPaste this into your clawhub.json to enable this plugin.
{
"plugins": {
"official-rm289-hour-meter": {
"enabled": true,
"auto_update": true
}
}
}Tags(AI)
Flags: file-write, file-read, external-api