OpenAgentSkill Registry Manifest Skill: Device Activity Tracker Slug: gommzystudio-device-activity-tracker Category: legal-compliance Description: A phone number can reveal whether a device is active, in standby or offline (and more). This PoC demonstrates how delivery receipts + RTT timing leak sensitive device-activity patterns. (WhatsApp / Signal) Agent fit: - Decision: 100/100 Production-ready - Primary fit: Legal and compliance - Role: Primary pick Supply profile: - Track: Legal, policy, and compliance - Scenario: Legal and compliance - Applicable agents: Claude Code, CLI, Codex, Cursor, TypeScript - Maintenance: 6mo since push - Risk: Safe to try Trust: - Trust score: 86/100 Production candidate - Audit: 86/100 Safe to try Attribution: - Status: Community indexed - Source: GitHub star discovery - Creator: gommzystudio - Claim URL: https://www.openagentskill.com/skills/gommzystudio-device-activity-tracker#claim-this-skill Install: npx skills add gommzystudio/device-activity-tracker URLs: - Web: https://www.openagentskill.com/skills/gommzystudio-device-activity-tracker - API: https://www.openagentskill.com/api/agent/skills/gommzystudio-device-activity-tracker - Install API: https://www.openagentskill.com/api/skills/gommzystudio-device-activity-tracker/install - Repository: https://github.com/gommzystudio/device-activity-tracker