This skill shows an agent how to build an endpoint that receives Adyen standard notifications and checks their signatures. The signature covers a colon-joined list of specific fields rather than the raw body and uses a hex-decoded key, and the skill spells out that order with Node and Python examples. The endpoint must answer with the literal text [accepted] and a 200 status, or Adyen retries. It also covers handling payment events such as authorisation, refund and chargeback.
Accessibility (Addy Osmani)Audits and improves web accessibility—semantics, keyboard, contrast, and ARIA practices.Coding agent
Add Firebase Authentication to an appThis skill guides adding Firebase Authentication to an app for user sign-in and account management. It covers users, identity providers, and tokens, then steps through provisioning, client setup, and security rules that limit data access by signed-in user.Coding agentFirebaseAuth
Agents SDK (Cloudflare)Builds agents on Cloudflare's Agents SDK with Workers-friendly patterns and constraints.Coding agent
Algorithmic ArtCreates seeded algorithmic art with p5.js and interactive parameter exploration.Coding agent
Animate web pages with GSAPThis skill is GreenSock's guide to the core GSAP API: tweens with to, from, and fromTo, easing, duration, stagger, and defaults. It also covers matchMedia for responsive and reduced-motion animation and when to pick GSAP over CSS or other libraries.Coding agentAnimationFrontend
Apple DesignApplies Apple-like interface and physical-motion design patterns to web experiences.Coding agentDesignFrontend
