What problem does it solve? Integrating the Velt collaboration SDK involves many failure-prone steps: installing the right packages, wiring VeltProvider correctly in Next.js, generating JWT tokens securely on the server, and initializing documents so users actually share the same collaborative space. This Skill provides 25 evidence-backed rules that prevent the most common setup mistakes. ## Core Features & Use Cases - Installation & Provider Wiring: Correct package selection (@veltdev/react vs @veltdev/client vs CDN) and framework-specific initialization for React, Next.js, Angular, Vue, and vanilla HTML. - Production Authentication: authProvider configuration with server-side JWT token generation, organizationId-based multi-tenant access control, and auth token security practices. - Document Identity & Debugging: Shareable document ID strategies, setDocuments initialization, domain whitelisting, and a troubleshooting guide for nine common configuration errors. - Use Case: You are adding real-time collaboration to a Next.js SaaS app with existing user auth. The Skill guides you to create a /api/velt/token route, configure authProvider with retry logic, and derive document IDs from route parameters. ## Quick Start Ask the agent to set up Velt with production-grade JWT authentication in your Next.js app, wiring VeltProvider with authProvider and initializing documents from your document route.