# Playwright Validation > Validate UI changes using Playwright browser tools and screenshots. Use this skill when making UI-related changes that need visual verification before completion. Use when this capability is needed. - Skill: `tomevault-io/playwright-validation-2` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/playwright-validation-2` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/playwright-validation-2/raw - Safety review: pending - 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/playwright-validation-2 --- This skill ensures UI changes are properly validated using Playwright MCP browser tools before marking tasks as complete. ## Validation Requirements For ANY UI-related task, you MUST validate changes using Playwright MCP browser tools before considering the task complete. ## Validation Steps 1. **Take screenshots** to prove the implementation works as expected 2. **Handle authentication** if required by injecting the saved auth state from `auth.json`: - Set the Supabase cookie - Set the localStorage token before navigating 3. **Iterate on fixes** if the validation reveals issues 4. **Continue until confirmed** - screenshots must confirm the user's requirements are fully met ## Completion Criteria Do not mark a task as done until visual confirmation via Playwright demonstrates correct behavior. ## Best Practices - Use Playwright's browser tools for navigation, interaction, and screenshot capture - Verify that all interactive elements work as expected - Check responsive behavior if applicable - Validate error states and edge cases when relevant - Document any issues found during validation --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/pierceboggan) — claim your Tome and manage your conversions.