Introduction

In home care, smart cameras, or parenting apps, a common requirement is not simply “identifying if there is a person in the frame,” but rather “whether a child has left a safety zone or is approaching a bed or windowsill.” Such rules often require customizing the shape of zones and sending immediate notifications to parents or triggering other devices when a boundary is crossed or approached. If detection logic, zone configuration, and alert phrasing are all hardcoded into the business logic, they must be rewritten every time the room layout or Agent environment changes.

The following is an introduction to the SkillHub community skill Virtual Fence Crossing Alert Skill: It encapsulates “Virtual Fence + Crossing/Proximity Alert” into a capability loadable by Agents like Cursor and Claude Code using a standard SKILL.md format. It is tagged with requires_api_key=false, meaning it can be integrated according to the skill instructions without requiring an additional API Key.

What is this

The Virtual Fence Crossing Alert Skill is maintained by the community publisher user_bb47e3e3. Its coordinates on SkillHub are @user_bb47e3e3/virtual-fence-intrusion-warning-analysis. The current version is 1.0.8, categorized under life-service, with a source of community.

The official summary describes it as: Customizing safety zones to identify dangers such as an infant crawling out or approaching bed edges/window sills and triggering immediate alerts, used to safeguard infants and young children. It is designed for Agents or smart monitoring solutions that require “configurable safety zones + visual/scene understanding + instant alerts,” rather than replacing professional medical or legal guardianship responsibilities.

Core Functions

The following capabilities are derived from the descriptions and tags on the SkillHub page and scraped metadata; details not listed on the public page are not extended.

  1. Custom Safety Zones (Virtual Fence)
    Define allowed activity ranges or dangerous boundaries based on the scenario, rather than fixed full-frame detection.

  2. Infant Behavior and Danger Zone Recognition
    Focuses on behaviors such as an infant crawling out of the safety zone or approaching high-risk locations like bed edges and window sills.

  3. Instant Alerts
    Triggers alerts when crossing or approaching a dangerous zone is detected, facilitating timely response by parents or upper-layer systems.

  4. No API Key Required Tag
    The skill is tagged with requires_api_key=false, indicating that according to SkillHub’s annotation, no separate API Key configuration is needed for this skill (specifics should still be subject to the installed SKILL.md).

Installation and Activation

SkillHub officially recommends two methods: using the CLI to install to the current Agent’s skills directory, or providing the installation prompt to an AI to execute according to the documentation.

1. Prepare SkillHub CLI

First, confirm if skillhub is installed on your machine:

command -v skillhub && skillhub --version

If not installed, follow the SkillHub Installation Documentation to perform a complete installation (CLI + Default Skills):

curl -fsSL https://skillhub-1388575217.cos.ap-guangzhou.myqcloud.com/install/install.sh | bash

If only the CLI is needed:

curl -fsSL https://skillhub-1388575217.cos.ap-guangzhou.myqcloud.com/install/install.sh | bash -s -- --cli-only

2. Install to the Agent’s skills directory

During installation, you must use --dir to point to the skills directory actually used by the current Agent; otherwise, it will default to ./skills/, which the Agent might not recognize.

skillhub install @user_bb47e3e3/virtual-fence-intrusion-warning-analysis --dir <your skills directory>

Common path examples (consistent with official installation documentation):

  • Cursor: ~/.cursor/skills/
  • Claude Code: ~/.claude/skills/
  • Codex: ~/.codex/skills/ or .agents/skills/ under the project

After installation is complete, restart or refresh the skill list according to your client’s requirements so the Agent can load the skill’s SKILL.md.

3. Install via AI using official prompts

The installation prompt provided on the SkillHub skill page is:

Please install `@user_bb47e3e3/virtual-fence-intrusion-warning-analysis` according to https://skillhub.cn/install/skillhub.md.

Send the above content to an Agent that already possesses SkillHub installation capabilities, and let it select the directory and complete the installation according to the documentation.

Typical Usage

No independent script examples are attached to the public materials; this skill follows the general SKILL.md format, and the typical workflow is as follows.

  1. Complete the installation in the previous section and confirm the skill appears in the current Agent’s skills list.
  2. Describe the monitoring scenario (e.g., safety zone around a crib, bed/window sill areas to watch) and the desired alert methods (push notifications, linkage rules, etc.) in the conversation.
  3. Let the Agent follow the guidance in the skill package’s SKILL.md to complete the zone definition and detection/alert workflow; specific fields and inputs/outputs are subject to the installed skill file.

If you need to verify skill metadata and version, you can open the SkillHub skill page to check if the current v1.0.8 and description are still consistent with your local copy.

Applicable Scenarios and Notes

Who is it for

  • Developers building parenting, smart home, or life-service Agents who need “configurable fences + danger zone proximity” phrasing and workflow templates.
  • Teams hoping to reuse the same set of fence alert instructions across multiple Agents (Cursor, Claude Code, etc.) rather than rewriting prompts in every project.

Usage Notes

  • The skill source is community; before integration, it is recommended to verify in a test environment whether the recognition and alerts conform to your specific camera angles, lighting, and room layout.
  • The public page only describes capabilities and installation methods; it does not promise to replace human supervision or professional safety equipment; production environments should be overlaid with redundant monitoring and compliance reviews.
  • SkillHub statistics (based on scraped data): Rating 100000, Downloads 694, Installs 2; when selecting, combine with your own testing, and do not equate store numbers with a guarantee of effectiveness.
  • If the ratings/download numbers in user leads are inconsistent with the page, the current SkillHub page and script scraping results shall prevail.

Conclusion

The Virtual Fence Crossing Alert Skill consolidates safety zone customization, crossing and danger zone proximity recognition, and instant alerts for infant scenarios into a single installable Agent Skill, marked as requiring no API Key, facilitating rapid mounting in life-service projects. To view the description, version, and installation prompts, please visit the official entrances:

  • API / Metadata Page: https://api.skillhub.cn/user_bb47e3e3/virtual-fence-intrusion-warning-analysis
  • SkillHub Display Page: https://www.skillhub.cn/skills/user_bb47e3e3/virtual-fence-intrusion-warning-analysis