Languages & Frameworks for Claude Code

Writes and debugs Apex code, builds Lightning Web Components, optimizes SOQL queries, implements triggers, batch jobs, platform events, and integrations on the Salesforce platform. Use when developing Salesforce applications, customizing CRM workflows, managing governor limits, bulk processing, or setting up Salesforce DX and CI/CD pipelines.

Builds and debugs Shopify themes (.liquid files, theme.json, sections), develops custom Shopify apps (shopify.app.toml, OAuth, webhooks), and implements Storefront API integrations for headless storefronts. Use when building or customizing Shopify themes, creating Hydrogen or custom React storefronts, developing Shopify apps, implementing checkout UI extensions or Shopify Functions, optimizing performance, or integrating third-party services. Invoke for Liquid templating, Storefront API, app dev

Generates Spring Boot 3.x configurations, creates REST controllers, implements Spring Security 6 authentication flows, sets up Spring Data JPA repositories, and configures reactive WebFlux endpoints. Use when building Spring Boot 3.x applications, microservices, or reactive Java applications; invoke for Spring Data JPA, Spring Security 6, WebFlux, Spring Cloud integration, Java REST API design, or Microservices Java architecture.

Builds iOS/macOS/watchOS/tvOS applications, implements SwiftUI views and state management, designs protocol-oriented architectures, handles async/await concurrency, implements actors for thread safety, and debugs Swift-specific issues. Use when building iOS/macOS applications with Swift 5.9+, SwiftUI, or async/await concurrency. Invoke for protocol-oriented programming, SwiftUI state management, actors, server-side Swift, UIKit integration, Combine, or Vapor.

Builds Vue 3 components with Composition API patterns, configures Nuxt 3 SSR/SSG projects, sets up Pinia stores, scaffolds Quasar/Capacitor mobile apps, implements PWA features, and optimises Vite builds. Use when creating Vue 3 applications with Composition API, writing reusable composables, managing state with Pinia, building hybrid mobile apps with Quasar or Capacitor, configuring service workers, or tuning Vite configuration and TypeScript integration.

Creates Vue 3 components, builds vanilla JS composables, configures Vite projects, and sets up routing and state management using JavaScript only — no TypeScript. Generates JSDoc-typed code with @typedef, @param, and @returns annotations for full type coverage without a TS compiler. Use when building Vue 3 applications with JavaScript only (no TypeScript), when projects require JSDoc-based type hints, when migrating from Vue 2 Options API to Composition API in JS, or when teams prefer vanilla Ja

Use when building real-time communication systems with WebSockets or Socket.IO. Invoke for bidirectional messaging, horizontal scaling with Redis, presence tracking, room management.

Develops custom WordPress themes and plugins, creates and registers Gutenberg blocks and block patterns, configures WooCommerce stores, implements WordPress REST API endpoints, applies security hardening (nonces, sanitization, escaping, capability checks), and optimizes performance through caching and query tuning. Use when building WordPress themes, writing plugins, customizing Gutenberg blocks, extending WooCommerce, working with ACF, using the WordPress REST API, applying hooks and filters, o

Portable digital employee distilled from digoal's personal blog for PostgreSQL, PolarDB, DuckDB, AI+database, vector/RAG, database operations, source-code reading, technical content creation, open-source community strategy, and "德说" style strategic analysis. Use when asked to answer as 德哥/digoal, mine a local digoal/blog checkout for database expertise, write or review PostgreSQL/AI database articles, design database solutions, troubleshoot PG/PolarDB problems, interpret commits or papers for DB

> Find latent bugs in a local PostgreSQL source tree (REL_xx_STABLE branch or HEAD) the way a core hacker does: build a heavily-poisoned debug instance (cassert + cache-discard + -O0/-ggdb3 + core dumps), fuzz it (sqlsmith) until the backend crashes, triage the core into a minimal reproducer (MRE), git-bisect the introducing commit, and render a community-style pgsql-bugs markdown report. The instance never auto-shuts-down. Use when the user says "find a bug in postgres", "fuzz postgres", "hunt

Answer PostgreSQL core database questions by researching the local postgres source tree, PostgreSQL documentation under doc/src/sgml, relevant source code, and DeepWiki repository knowledge for postgres/postgres; use when the user asks any PostgreSQL database behavior, internals, SQL, configuration, administration, performance, storage, planner, executor, replication, or documentation question and wants a sourced Markdown answer saved to the current project's markdown directory. Refuse questions

Comprehensive Python programming reference covering syntax, concurrency, networking, databases, ML/LLM development, and HPC. Use for: Python questions, Python interview preparation, debugging, performance optimization, async patterns, library examples, code review, best practices, MLOps workflows, distributed computing, security implementations, and any Python development tasks.

Readable Python code rules inspired by The Art of Readable Code. Use when writing, reviewing, or refactoring Python code. Enforces short functions, flat control flow, clear naming, readable structure, and Pythonic idioms.

Reviews code changes for architectural consistency, layer violations, API surface changes, and dependency direction in the FastLED codebase

Deep C++ expertise for template metaprogramming, SFINAE, constexpr, type traits, and memory model questions in embedded context

You are a specialized code review agent for FastLED. Review staged and unstaged changes according to these strict rules.

Xtensa Assembly Code Review

Reviews Xtensa assembly code for ESP32 platforms using static analysis

Review RISC-V assembly code for correctness and best practices

Review Xtensa assembly code for ESP32 platforms. Checks for critical errors in inline assembly, ABI compliance, and optimization opportunities. Use after modifying ESP32 assembly or inline asm code.

Review RISC-V assembly code for correctness, ABI compliance, and best practices. Use after modifying RISC-V assembly or inline asm code.

Creates new C++ linter rules for the FastLED codebase. New rules live in the Rust crate (ci/lint_cpp_rs/) by default; Python is reserved for AST ratchets and cross-file structural checks.

Review and implement hardware driver code — DMA safety, interrupt correctness, timing constraints, peripheral register usage, channel drivers, and peripheral mock implementations. Use when writing, modifying, or reviewing LED drivers, SPI/I2S/RMT/UART/PARLIO/LCD_CAM peripherals, GPIO configuration, or peripheral mock code.

Firmware crash analysis, stack trace decoder, and register dump interpreter for ESP32/ARM/AVR platforms. Use when debugging device crashes, panics, guru meditation errors, hard faults, or analyzing core dumps.

Firmware crash analysis and stack trace decoder for ESP32/ARM/AVR/RISC-V platforms

Firmware engineering specialist for ESP32/ARM/AVR platforms covering DMA, interrupts, power management, peripherals, and RTOS patterns

Parse and classify ESP32 serial log output to identify FastLED-related errors, RMT/I2S/SPI driver faults, timing violations, RTOS issues, and crash signatures. Use when debugging unexpected device behavior, boot failures, or LED output problems on ESP32.

ESP-IDF v5.x RMT5 API expert for LED protocols, encoders, and multi-channel control

ESP-IDF v5.x RMT5 API expert for LED protocols, encoders, and multi-channel control. Use when working with RMT peripheral programming, LED strip control, or migrating from RMT4 to RMT5.

Expert ESP-IDF v5.x RMT5 API specialist with deep knowledge of encoder architecture and LED protocols

Fix integer type definitions for specified platform. Researches correct primitive type mappings and applies fixes to platform-specific int headers.

Fix integer type definitions for specified platform

Researches and fixes platform-specific integer type definitions

Audit embedded code for stack overflow risks, heap fragmentation, static allocation patterns, and memory leaks. Use when investigating OOM crashes, optimizing memory usage, or reviewing memory-critical code on constrained devices.

Namespace Policy: fl::gfx and fl::math

Guide porting FastLED to new MCU platforms, including int.h types, clockless drivers, SPI implementations, and platform detection. Use when adding support for a new microcontroller family or board.

Guides porting FastLED to new MCU platforms with platform detection, int types, drivers, and build integration. BEFORE writing any peripheral driver code, verifies the peripheral EXISTS on the target silicon against the vendor CMSIS PAL header AND the chip datasheet — see agents/docs/peripheral-existence.md for the halt-on-phantom rule.

Expert RISC-V assembly code reviewer with deep ISA knowledge

Analyze real-time constraints, ISR latency, DMA transfer times, and LED protocol timing for embedded systems. Use when debugging timing-sensitive code, optimizing frame rates, or verifying protocol compliance.

Analyzes real-time constraints, ISR latency, DMA transfer times, and LED protocol timing for embedded systems