# State UX Flow Builder > Standardizes UX states for data fetching flows (loading, error, empty, success) and complex multi-view UI patterns. Provides state machine approach recommendations, loading skeletons, error boundaries, and empty state components. Use when implementing "loading states", "error handling", "empty states", or "state machines". Use when this capability is needed. - Skill: `tomevault-io/state-ux-flow-builder` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/state-ux-flow-builder` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/state-ux-flow-builder/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/state-ux-flow-builder --- # State & UX Flow Builder Create consistent UX flows for all application states: loading, error, empty, and success. ## Output Components Every implementation includes: (1) Loading skeletons, (2) Error state with retry, (3) Empty state with action, (4) Success view, (5) Error boundary, (6) State management pattern (useState/XState/server). ## Key Patterns **Data Fetching Flow**: Check loading → Handle error → Show empty → Display data **State Machine**: XState for complex flows with multiple states and transitions **Optimistic Updates**: Instant UI feedback with rollback on error **Progressive Loading**: Show content incrementally as it loads ## Best Practices Always handle all states, prefer skeletons over spinners, provide retry mechanisms, use consistent error/empty UI, add ARIA live regions, implement error boundaries. --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/patricio0312rev) — claim your Tome and manage your conversions.