# Code Quality > Coding style standards, security guidelines, and accessibility requirements. Use when (1) Writing new code, (2) Reviewing code for style/security, (3) Implementing UI/UX features, (4) Addressing security concerns, (5) Ensuring accessibility compliance. Covers naming conventions, formatting, security best practices (no secrets/PII), accessibility standards (semantic HTML, keyboard nav), and responsive design. Use when this capability is needed. - Skill: `tomevault-io/code-quality-22` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/code-quality-22` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/code-quality-22/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Web & Frontend - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/code-quality-22 --- # Code Quality Standards ## Coding Style * **Naming:** camelCase for vars/functions; PascalCase for classes/types * **Formatting:** 4-space indentation; target ≤80 chars (wrap thoughtfully) * **Comments:** Meaningful, current; delete stale comments * **Security:** Never log secrets/PII; validate inputs; least privilege by default * **Errors/Logs:** Explicit error types; structured logs by level; actionable messages ## Accessibility & UX Quality * Favor semantic roles/labels; keyboard nav and focus order must work * Include responsive checks at **375, 768, 1024, 1440** with notes/screenshots * Use deterministic test IDs; avoid brittle CSS/XPath ## Security & Compliance Guardrails * No real credentials in code, tests, or screenshots * Use test accounts/fixtures; redact secrets * Follow least-privilege and input validation * Document threat considerations in PR when relevant ## Reference Files See `references/coding-style.md` for detailed style guide, formatting rules, comment standards. See `references/security-checklist.md` for security validation checklist, threat modeling, PII handling. See `references/accessibility-standards.md` for WCAG compliance, semantic HTML patterns, keyboard nav testing. --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/ainative-studio) — claim your Tome and manage your conversions.