Analyzes and refactors Go code using Effective Go principles. Use when refactoring Go code, identifying anti-patterns, improving Go idioms, or applying Go best practices.

Java best practices guide based on Effective Java. Use when reviewing Java code, discussing design patterns, object creation, equals/hashCode, Optional, Stream API, exception handling, or concurrency. Applies Joshua Bloch's principles.

Master effective prompting techniques for Claude Code. Use when learning prompt patterns, improving task descriptions, optimizing Claude interactions, or troubleshooting why Claude misunderstood a request. Covers @ mentions, thinking keywords, task framing, and iterative refinement.

Effector state management patterns and CRITICAL anti-patterns for ChainGraph frontend. Use when writing Effector stores, events, effects, samples, or any reactive state code. Contains anti-patterns to AVOID like $store.getState(). Covers domains, patronum utilities, global reset. Triggers: effector, store, createStore, createEvent, createEffect, sample, combine, attach, domain, $, useUnit, getState, anti-pattern, patronum.

EKS cluster patterns and best practices for Terraform. Provides cluster, node group, add-on, and IRSA scaffolds. Use when developing EKS infrastructure.

eld-ground-law-monitor

electron-app-dev

electron-base

Guide for performing Chromium version upgrades in the Electron project. Use when working on the roller/chromium/main branch to fix patch conflicts during `e sync --3`. Covers the patch application workflow, conflict resolution, analyzing upstream Chromium changes, and proper commit formatting for patch fixes.

Desktop application specialist building secure cross-platform solutions. Develops Electron apps with native OS integration, focusing on security, performance, and seamless user experience.

Scaffold a native-looking, effective Electron app with best practices baked in. Creates a production-ready Electron application with security hardening, modern tooling, proper IPC patterns, auto-updates, native UI elements, and optimal build configuration. Use this skill when users want to start a new Electron project or modernize an existing one.

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Element is a zero dependency library to efficiently generate HTML, without templates in Go

Auto-review skill for expert agents. After coding, expert applies elicitation techniques to self-correct before sniper validation. Inspired by BMAD-METHOD.

You are an elite Elixir developer specializing in full-stack web applications

Expert in Elixir, Phoenix Framework, and OTP. Specializes in building concurrent, fault-tolerant, and real-time applications using the BEAM. Use when building Elixir applications, working with Phoenix, implementing GenServers, or designing distributed systems on the BEAM.

Use when designing or architecting Elixir/Phoenix/LiveView applications, creating comprehensive project documentation, planning OTP supervision trees, defining domain models, structuring multi-app projects with path-based dependencies, or preparing handoff documentation for Director/Implementor AI collaboration

Elixir and Phoenix development guidelines with critical language-specific gotchas. Use when writing Elixir code, Phoenix applications, or Mix tasks. Prevents common mistakes with list access, variable rebinding, struct access, and OTP patterns that cause subtle bugs or compilation errors.

Run comprehensive Elixir quality checks (format, credo, dialyzer, tests) with proper error handling and reporting. Use when validating code quality, before commits, or preparing for deployment.

MANDATORY for ANY feature or bugfix - write ExUnit test FIRST, watch it FAIL, then implement. NO exceptions. Use before writing any Elixir production code.

Run ExUnit tests with smart filtering, debugging options, and proper error reporting. Use when running tests, debugging failures, or validating specific test cases.

MANDATORY verification before claiming anything works. Run actual commands, read actual output, provide evidence. Use when claiming tests pass, build succeeds, or code works.

You are a specialized migration expert for the morphir-dotnet project. Your role is to facilitate the conversion of Elm code from the [finos/morphir-elm](https://github.com/finos/morphir-elm) reposito

Expert guidance for ElysiaJS web framework development. Use when building REST APIs, GraphQL services, or WebSocket applications with Elysia on Bun. Covers routing, lifecycle hooks, TypeBox validation, Eden type-safe clients, authentication with JWT/Bearer, all official plugins (OpenAPI, CORS, JWT, static, cron, GraphQL, tRPC), testing patterns, and production deployment. Assumes bun-expert skill is active for Bun runtime expertise.

Emacs Info documentation system. Navigate and query Info manuals for Emacs, Elisp, and GNU tools.

emacs-lisp

Handle email delivery failures. Use when messages bounce or a customer reports not receiving emails.

Email delivery patterns including single, batch, scheduled emails and attachment handling. Use when building transactional email systems, batch communication workflows, scheduled delivery, or implementing file/URL attachments with reply-to and CC/BCC functionality.

Email template development with React Email and Tailwind CSS. Use when creating or modifying email templates, testing email rendering, or building email HTML from React components.

Generate bulletproof HTML email code that renders correctly across Gmail, Outlook, Apple Mail, Yahoo, and mobile clients. Use when creating HTML emails, email templates, or any HTML content for email delivery. Handles table-based layouts, inline CSS, MSO conditionals, and cross-client compatibility.

Comprehensive email marketing strategy including drip campaigns, segmentation, automation workflows, copywriting guidelines, deliverability best practices, and 90-day implementation roadmap with full-funnel lifecycle coverage

Scaffolds email campaigns with content blocks and copy. Use when the user asks about email templates, newsletter content, subject lines, email marketing, or campaign copy.

Expert guide for sending transactional emails, creating templates, scheduling notifications, and email best practices. Use when implementing email functionality, notifications, or campaigns.

email-template-rendering

Auto-embed Acceptance Criteria from living docs into increment spec.md for hook compatibility

Embedded systems development best practices for ESP32, FreeRTOS, and ESP-IDF. Use when writing firmware code, reviewing implementations, or learning about embedded patterns.

Expert in RTOS, bare-metal programming, and embedded Linux. Specializes in Rust for Embedded and high-reliability firmware.

Optimizing vector embeddings for RAG systems through model selection, chunking strategies, caching, and performance tuning. Use when building semantic search, RAG pipelines, or document retrieval systems that require cost-effective, high-quality embeddings.

Emil Kowalski's animation best practices for web interfaces. Use when writing, reviewing, or implementing animations in React, CSS, or Framer Motion. Triggers on tasks involving transitions, easing, gestures, toasts, drawers, or motion.

emit

Use when writing subagent prompts, skill instructions, or any high-stakes task requiring accuracy and truthfulness

Intent-based code interpretation across all languages — SQL, Python, JS, YAML, Bash, and beyond

Smart templates that understand semantic intent, not just string substitution

name: encryption

Complete development workflow orchestrator coordinating all multi-ai skills (research → planning → implementation → testing → verification) with quality gates, failure recovery, and state management. Single-command complete workflows from objective to production-ready code. Use when implementing complete features requiring full pipeline, coordinating multiple skills automatically, or executing production-grade development cycles end-to-end.

after making changes, run end-to-end tests to ensure that the product still works

Use this skill to implement endpoints in the API

Use when creating or updating Energize Denver compliance proposals including benchmarking, energy audits, compliance pathways, and performance target analysis. Handles proposal generation from template, cost estimation based on building size and service type, timeline planning, and compliance verification against Denver Article XIV requirements for commercial and multifamily buildings (project)

You are an expert in energy logistics and supply chain management. Your goal is to help optimize the complex logistics of oil, gas, and energy resources from extraction to end-users, balancing cost, s

Build an Energy Management Operating System Pack (energy drivers/drains map, calendar energy audit, zone-of-genius expansion plan, energy-aligned weekly schedule, recovery routines, and 2-week experiments). Use for sustainable leadership performance and burnout prevention. Category: Leadership.