practices▌

Native Home Assistant constructs for automations, helpers, scripts, and Lovelace dashboards. \n \n Prioritizes built-in conditions, triggers, and helpers over Jinja2 templates; includes decision workflow for choosing between native state conditions, numeric_state, time triggers, and template helpers \n Covers automation modes (single, restart, queued, parallel) with scenarios, entity_id vs device_id usage, and Zigbee button/remote patterns for ZHA and Zigbee2MQTT \n Provides safe refactoring wor

Cloudflare Workers code review and authoring against production best practices. \n \n Retrieves latest Workers APIs, types, and wrangler configuration schema before reviewing or writing code; biases towards live documentation over pre-trained knowledge \n Covers 40+ best practice rules across configuration, request/response handling, architecture, observability, code patterns, and security \n Flags 15+ common anti-patterns including unbounded streaming, floating promises, global request state, h

End-to-end testing focused on real user behavior, minimal mocking, and avoiding component unit tests. \n \n Prioritizes E2E tests over unit tests; reserves unit tests for pure functions only \n Emphasizes accessible selectors (role-based, label-based) over CSS selectors and test IDs in E2E tests \n Recommends writing E2E tests instead of heavily mocked unit tests; suggests 3+ mocks as a signal to switch approaches \n Includes rules for test structure, selector strategy, and when to apply each te

Comprehensive best practices and integration guides for Sanity CMS development across frameworks and topics. \n \n Covers 10+ framework integrations including Next.js, Nuxt, Astro, Remix, SvelteKit, and Angular with framework-specific patterns and setup guidance \n Includes topic guides for schema design, GROQ query optimization, Visual Editing, Portable Text, images, TypeGen, localization, and content migrations \n Provides quick-reference structure for loading only relevant guides based on tas

45 performance rules for React and Next.js, organized by impact from waterfalls and bundle optimization down to advanced patterns. \n \n Covers 8 rule categories prioritized by impact: eliminating waterfalls (Promise.all, Suspense), bundle size (direct imports, dynamic loading), server-side caching, client-side deduplication, re-render optimization, rendering performance, JavaScript efficiency, and advanced patterns \n Each rule includes explanation, incorrect and correct code examples, and cont

Idiomatic Rust coding standards based on Apollo GraphQL's best practices handbook. \n \n Covers nine core areas: coding styles and idioms, clippy linting, performance optimization, error handling, testing patterns, generics and dispatch, type state pattern, documentation, and pointer safety \n Emphasizes borrowing over cloning, Result-based error handling with thiserror/anyhow, and performance profiling with release builds \n Includes quick reference guidance on ownership patterns, panic avoidan

Comprehensive guide to implementing structured, secure, and performant logging across applications. Covers log levels, structured logging formats, contextual information, PII protection, and centralized logging systems.

Web search API for LLMs with real-time data access, content extraction, site crawling, and AI-powered research. \n \n Five core methods: search() for web results, extract() for URL content, crawl() for site-wide extraction, map() for URL discovery, and research() for end-to-end AI synthesis \n Supports Python and JavaScript SDKs with async clients for parallel queries and configurable search depth (ultra-fast/fast/basic/advanced) \n Crawl method accepts semantic instructions to focus extraction

Multi-factor authentication with TOTP, OTP, backup codes, and trusted device management for Better Auth. \n \n Supports three verification methods: authenticator apps (TOTP with QR codes), email/SMS codes (OTP), and single-use backup codes \n Handles complete 2FA sign-in flows with automatic session management, temporary 2FA cookies, and trusted device tracking with configurable expiration \n Built-in security features including rate limiting (3 requests per 10 seconds), encryption at rest for s

Comprehensive performance optimization guide for Framer Motion animations in React applications. Contains 42 rules across 9 categories, prioritized by impact to guide automated refactoring and code generation.