Codex skills, plugins, subagents, slash commands and mcp servers

iii-error-handling iii-hq skill Skill teaches agents to read iii engine and SDK error codes, tell network failures from access denials, know when it is safe to retry. Use it when calling remote functions from Node, Python, Rust, or browser code. Claude Code Cursor GitHub Copilot 4,000installs adev-writing-guide angular skill Guidelines for writing Angular documentation in adev/src/content. It enforces Google Technical Writing standards, Angular markdown extensions, and custom code components. Claude Code Cursor GitHub Copilot 912installs seo-local AgriciDaniel skill Audits local SEO across Google Business Profile signals, NAP consistency, reviews, and schema. Helps prepare local business pages for map pack visibility. Claude Code Cursor GitHub Copilot 7,100installs seo-backlinks AgriciDaniel skill This skill analyzes a site's backlink profile, anchor text, suspicious links, and gaps against a competitor. Use it when the task focuses on backlinks or referring domains. Claude Code Cursor GitHub Copilot 7,100installs docs-write metabase skill This skill helps write and edit Markdown and MDX in Metabase’s style. Use it when a documentation file needs a clear structure, checked examples, and consistent formatting. Claude Code Cursor GitHub Copilot 2,100installs typescript-write metabase skill Skill for writing and editing TypeScript and JavaScript code to Metabase standards. Enforces strict typing without any and requires type checking before completion. Claude Code Cursor GitHub Copilot 2,100installs firecrawl-download firecrawl skill Downloads an entire website or specific sections into local markdown files and screenshots. Useful for keeping offline docs ready for an agent. Claude Code Cursor GitHub Copilot 79,800installs microservices-patterns Seth Hobson skill A practical guide to service boundaries, event-driven communication, data ownership, and resilience patterns for distributed systems. Claude Code Cursor 13,176installs golang-uber-fx samber skill Skill for uber-go/fx — a dependency injection framework with lifecycle hooks, module system, and graceful shutdown. Useful if your project already uses fx or you're migrating to it for long-running services. Claude Code Cursor GitHub Copilot 36,500installs web-component-design Seth Hobson skill This skill helps design reusable components for React, Vue, and Svelte. Use it for UI libraries, design systems, or legacy component refactors. Claude Code Cursor 13,167installs reference-compiler-cli angular skill A skill explaining how Angular Compiler (ngtsc) works internally: decorator compilation, the traits system, and code transformation. Use it when working with packages/compiler-cli. Claude Code Cursor GitHub Copilot 909installs langchain-architecture Seth Hobson skill This skill helps design LangChain 1.x and LangGraph applications with agents, memory, state, and tool calls. Use it for multi-step LLM workflows. Claude Code Cursor 13,150installs newsletter-generation bytedance skill Generates professional email digests and newsletters with topic research via web search, multi-source curation, and ready-to-publish markdown output. Claude Code Cursor GitHub Copilot 1,800installs golang-uber-dig samber skill This skill helps wire Go application dependencies with uber-go/dig. Use it when registering constructors and resolving an application graph at startup. Claude Code Cursor GitHub Copilot 36,400installs secrets-management Seth Hobson skill This skill sets up secrets handling for CI/CD with Vault, AWS Secrets Manager, and platform stores. Use it for credentials, rotation, and protected deployments. Claude Code Cursor 13,122installs gitlab-ci-patterns Seth Hobson skill This skill builds GitLab CI/CD pipelines with stages, caching, runners, and deployment patterns. Use it when your project needs automated tests, builds, or releases. Claude Code Cursor 13,112installs grafana-dashboards Seth Hobson skill Build Grafana dashboards for system and application metrics with this skill. Use it for monitoring views, SLO dashboards, and operational observability. Claude Code Cursor 13,097installs threejs nexu-io skill Guides the agent in building browser 3D scenes, materials, interactive controls, and post-processing with Three.js. Claude Code Cursor GitHub Copilot 3,400installs creative-director nexu-io skill This skill takes a creative concept from brief to presentation and checks it on three axes. Use it for campaign ideas and creative critique. Claude Code Cursor GitHub Copilot 3,400installs design-brief nexu-io skill Parses an I-Lang design brief into a concrete spec with palette, typography, density, and constraints. Eliminates ambiguity from phrases like "make it professional." Claude Code Cursor GitHub Copilot 3,400installs pipeline-review official anthropics skill Evaluates stage-by-stage pipeline health, aging deals, and coverage from CRM records or file exports. Handy for weekly sales reviews. Claude Code Cursor GitHub Copilot 2,800installs policy-lookup official anthropics skill Searches and explains company policies in plain language. Answers questions about PTO, remote work, travel, and benefits by connecting to handbooks or knowledge bases. Claude Code Cursor GitHub Copilot 2,800installs vendor-check official anthropics skill Skill checks vendor agreements across CLM, CRM, email, and document storage in one report, flags missing contracts and expiration dates. Use when onboarding a vendor or renewing an agreement. Claude Code Cursor GitHub Copilot 2,800installs kb-article official anthropics skill Converts resolved support tickets and recurring questions into knowledge base articles. Helps document workarounds and fixes using customer-facing language. Claude Code Cursor GitHub Copilot 2,800installs brief official anthropics skill Builds legal briefings from connected sources such as email, calendars, and contracts. Use it for a daily scan, research on a legal topic, or incident context. Claude Code Cursor GitHub Copilot 2,800installs vendor-review official anthropics skill Evaluates software and service vendors by modeling total cost of ownership, auditing vendor risk, and preparing negotiation points before signing. Claude Code Cursor GitHub Copilot 2,800installs cowork-plugin-customizer official anthropics skill Tailor a plugin to an organization's tools and workflows. Use it to fill in a template or make a focused change to an existing plugin. Claude Code Cursor GitHub Copilot 2,800installs change-request official anthropics skill Creates change management requests with impact analysis, risk assessment, and rollback plans. Use it before CAB reviews or major production deployments. Claude Code Cursor GitHub Copilot 2,800installs create-cowork-plugin official anthropics skill This skill guides plugin creation from the first idea to a packaged .plugin file. Use it when you need to design a new plugin from scratch. Claude Code Cursor GitHub Copilot 2,800installs managed-airflow-dag-authoring official google skill Guides Apache Airflow DAG authoring and validation for Managed Service for Apache Airflow. Use it when creating or extending a DAG. Claude Code Gemini CLI 4,100installs google-cloud-filestore-autoscale official google skill Checks Google Cloud Filestore capacity and usage, then suggests or performs scaling. Use it to monitor headroom and apply storage thresholds. Claude Code Gemini CLI 4,100installs cloud-monitoring-list-time-series-request official google skill This skill builds Cloud Monitoring ListTimeSeries requests and aggregations. Use it when you need a filter, JSON payload, or chart query parameters. Claude Code Gemini CLI 4,100installs retrieving-developer-knowledge official Google LLC skill Searches and summarizes official Google developer docs for Cloud, Gemini, Android, Firebase, and more. Useful for API, IAM, and gcloud questions. Claude Code Gemini CLI 4,100installs improve-ui ibelick skill Audits an interface against its own design system, finds proven inconsistencies, and writes fix plans for another agent without touching source. Claude Code Cursor GitHub Copilot 7,800installs expo-ui expo skill A skill for building interfaces that compile to real native code: SwiftUI on iOS, Jetpack Compose on Android. Helps the agent use the right component instead of reaching for Reanimated or heavy community libraries. Claude Code Cursor GitHub Copilot 31,600installs python-packaging Seth Hobson skill This skill turns Python libraries and CLI tools into installable packages and guides PyPI releases. Use it when a project needs a distributable structure. Claude Code Cursor 12,915installs expo-native-ui expo skill Guides your coding agent in building native-feeling Expo screens with Apple HIG styling, @expo/ui components, SF Symbols, and semantic colors. Claude Code Cursor GitHub Copilot 31,400installs reverse-engineering zhaoxuya520 skill Guides code agents through static and dynamic analysis of binaries, bytecode, and firmware. Useful when dissecting obfuscated logic before exploitation. Claude Code Cursor GitHub Copilot 1,800installs analyzing-financial-statements official anthropics skill Computes key financial ratios and metrics from financial statements for investment analysis. Useful for inspecting profitability, liquidity, and equity valuation. Claude Code Cursor GitHub Copilot 347installs php-pro https://github.com/Jeffallan skill Enforces PHP 8.3+ standards across Laravel and Symfony projects with strict typing, PHPStan level 9 checks, and automated Pest tests. Claude Code Cursor GitHub Copilot 15,500installs