hookdeck/usps-webhooks
> Receive and verify USPS webhooks (Subscriptions - Tracking API v3.2). Use when setting up USPS tracking webhook handlers, debugging X-HMAC signature verification, creating tracking subscriptions, or handling package tracking events like Out for Delivery, Delivered, or Available for Pickup.
npx skills add https://github.com/hookdeck/webhook-skills --skill usps-webhooks
Take hookdeck/usps-webhooks from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.
The instructions reference npx.
Without those the skill loads but fails at the first command.