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Install in OpenClaw
/install frost-sentinel-lite
Description
Lightweight temperature monitoring. Upgrade to Commercial Edition for Hail, Snow, Ground-Lock, and Chill Hours.
README (SKILL.md)
Frost Sentinel: Community Edition Logic
0. Initialization & Location
- Location Check: On startup, check local
settings.jsonfor the user's Operating ZIP/Postcode. Convert to GPS coordinates. - Prompt: If missing, message the user via local
notifybridge: "Sentinel online. Location required. Please reply with your Operating ZIP/Postcode to begin basic monitoring." Save response tosettings.json.
1. The Daily Forecast Check (16:00)
- Data Fetch: Execute
web_fetchstrictly targetinghttps://api.open-meteo.com/v1/forecastusing the coordinates saved insettings.json. - Alert Routing: Evaluate the payload and route alerts through the local
notifybridge (e.g.,localhost):- Frost Alert: If overnight low \x3C 3°C, push: "⚠️ FROST ALERT: Temp drop to [Temp] forecast. (Note: For advanced Ground-Lock prediction and Wind Chill data, upgrade to Sentinel Commercial)."
- Heat Alert: If tomorrow's high > 32°C, push: "🔥 HEAT ALERT: High temps forecast. Ensure adequate irrigation."
Guardrails
- Single Retry: If
api.open-meteo.comtimes out, wait 5 minutes and attempt one retry.
Usage Guidance
This skill is internally consistent for local temperature alerts, but review these before installing: 1) Confirm how ZIP→GPS conversion is performed (client-side mapping or an external geocoding API); if an external geocoder is used, that will transmit your location. 2) Verify and trust the local notification bridge (WhatsApp/Telegram) running on localhost — it will deliver alerts off your machine and its configuration determines who receives messages. 3) Expect that coordinates (or postcode) are sent to api.open-meteo.com for forecasts — contrary wording in the text claiming 'never sent to a third-party'. 4) Check settings.json file permissions (it will store your location) and delete or rotate as needed. If you need absolute assurance that no location leaves your network, ask the author to document the ZIP→GPS step and any external endpoints used for geocoding before enabling the skill.
Capability Analysis
Type: OpenClaw Skill
Name: frost-sentinel-lite
Version: 1.0.1
The skill's instructions in SKILL.md and permissions in skill.json are consistent with its stated purpose of lightweight temperature monitoring. Network access is strictly limited to `api.open-meteo.com` for weather data and `localhost` for notifications, as defined in `skill.json`. While `local_read` and `local_write` permissions are present, their use is explicitly confined to a `settings.json` file for configuration, with no instructions to access or modify sensitive system files. There is no evidence of data exfiltration, malicious execution, persistence mechanisms, or prompt injection attempts against the agent.
Capability Assessment
Purpose & Capability
Name/description align with required permissions (web_fetch, notify, local_read, local_write). Declared domains (api.open-meteo.com, localhost) are appropriate for fetching weather and sending local notifications.
Instruction Scope
Runtime instructions stay within the stated purpose (read/save settings.json, fetch Open-Meteo, route alerts via local notify). Minor inconsistencies: SKILL.md says it will 'convert ZIP/Postcode to GPS coordinates' but does not specify how or what geocoding source is used; the included text claims 'data is never sent to a third-party server' which contradicts the explicit call to api.open-meteo.com (a third-party API). Also the skill assumes a local notification bridge (WhatsApp/Telegram on localhost) — the security of that bridge is out of scope but important for the user to verify.
Install Mechanism
Instruction-only skill with no install spec or downloaded artifacts; nothing is written to disk by an installer step beyond what the agent itself will save (settings.json). Low install risk.
Credentials
No environment variables, keys, or external credentials requested. Permissions and local file usage are proportionate to the functionality.
Persistence & Privilege
Does not request always:true or elevated persistent privileges. Declared permissions are limited to local read/write and web_fetch/notify as required for operation and do not touch other skills or system-wide configuration.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install frost-sentinel-lite - After installation, invoke the skill by name or use
/frost-sentinel-lite - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.1
- Removed the file Frost Sentinel Lite.txt for cleanup.
- Improved initialization: Location ZIP/Postcode is now converted to GPS coordinates.
- Weather data fetch is now explicitly from https://api.open-meteo.com/v1/forecast using saved coordinates.
- Alert notifications are routed through the local notify bridge.
- Clarified and narrowed retry logic to only use api.open-meteo.com for weather data.
v1.0.0
Frost Sentinel (Community Edition) v1.0.0-lite
- Initial release: lightweight daily temperature alerts.
- On first run, prompts user for location if missing.
- Sends Frost Alert if overnight low < 3°C.
- Sends Heat Alert if high > 32°C.
- Notifies user and stores responses in local settings.
- Includes a single retry on weather API timeout.
Metadata
Frequently Asked Questions
What is Frost Sentinel Lite?
Lightweight temperature monitoring. Upgrade to Commercial Edition for Hail, Snow, Ground-Lock, and Chill Hours. It is an AI Agent Skill for Claude Code / OpenClaw, with 399 downloads so far.
How do I install Frost Sentinel Lite?
Run "/install frost-sentinel-lite" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Frost Sentinel Lite free?
Yes, Frost Sentinel Lite is completely free (open-source). You can download, install and use it at no cost.
Which platforms does Frost Sentinel Lite support?
Frost Sentinel Lite is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Frost Sentinel Lite?
It is built and maintained by TonyJB (@tonyjb); the current version is v1.0.1.
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