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

seo-page AgriciDaniel skill Audits one URL across on-page SEO, content, metadata, schema, images, and performance signals. Use it when you need a focused review of a single page. Claude Code Cursor GitHub Copilot 6,900installs llm-evaluation Seth Hobson skill A skill for evaluating LLM applications: automated metrics, human feedback, LLM-as-judge and benchmarking. Useful when comparing models or catching regressions before deploy. Claude Code Cursor 12,755installs protocol-reverse-engineering Dávid Balatoni skill This skill helps inspect network traffic, map protocol structures, and write protocol documentation. Use it for proprietary protocol analysis or network debugging. Claude Code Cursor 12,701installs python-type-safety Seth Hobson skill Adds practical Python typing guidance for annotations, generics, protocols, type narrowing, and strict checks with mypy or pyright. Claude Code Cursor 12,643installs react-modernization Seth Hobson skill This skill upgrades React codebases, moves class components to hooks, and guides React 18 adoption. Use it when a legacy React app needs a structured migration. Claude Code Cursor 12,625installs startup-financial-modeling Seth Hobson skill Build startup financial models with revenue, costs, cash flow, and scenarios. Use it for planning runway, headcount, or a seed and Series A raise. Claude Code Cursor 12,585installs cmux-testing manaflow-ai skill Skill for choosing verification scopes, adding tests, and validating Swift test targets in the cmux project. Decides what local and CI evidence a change needs. Claude Code Cursor GitHub Copilot 4,900installs analytics-events metabase skill A skill that teaches coding agents how to add Snowplow analytics events to the Metabase frontend. Use it when tracking clicks, form submissions, and entity creation. Claude Code Cursor GitHub Copilot 2,000installs clojure-review metabase skill Reviews Clojure and ClojureScript code against Metabase engineering guidelines and flags styling mistakes in diffs. Claude Code Cursor GitHub Copilot 2,000installs clojure-write metabase skill This skill guides REPL-driven Clojure and ClojureScript development and refactoring. Use it when functions need step-by-step checks. Claude Code Cursor GitHub Copilot 2,000installs sox-testing official anthropics skill Builds sample selections, testing workpapers, and control assessments for SOX 404. Use it to plan a control test for a specified period. Claude Code Cursor GitHub Copilot 2,700installs signature-request official anthropics skill Prepares documents for electronic signature, runs a pre-signing checklist, and configures signer routing. Useful when finalized contracts are ready for execution. Claude Code Cursor GitHub Copilot 2,700installs people-report official anthropics skill Skill to generate headcount, attrition, diversity, and org health reports from HR data. Pulls snapshots by team, analyzes turnover trends and flight risk indicators across the organization. Claude Code Cursor GitHub Copilot 2,700installs draft-response official anthropics skill Drafts customer-facing replies shaped around the situation, channel, and relationship. Use it for product questions, escalations, outages, delays, feature refusals, and billing issues. Claude Code Cursor GitHub Copilot 2,700installs journal-entry official anthropics skill Prepares journal entries with debit and credit schedules for accruals, prepaid expenses, or revenue recognition. Claude Code Cursor GitHub Copilot 2,700installs digest official anthropics skill Builds a daily or weekly digest from connected sources, covering mentions, action items, decisions, and document changes. Useful when you need to catch up on project activity. Claude Code Cursor GitHub Copilot 2,700installs dogfood callstack skill Coordinates exploratory mobile app testing on iOS and Android via agent-device. Discovers UI bugs and workflow issues in runtime. Claude Code Cursor GitHub Copilot 11,200installs wcag-audit-patterns Seth Hobson skill Audits web interfaces against WCAG 2.2 with automated checks and manual verification. Use it to find violations and build accessible patterns. Claude Code Cursor 12,486installs threejs-animation CloudAI-X skill Skill for keyframe, skeletal and morph-target animation in Three.js. Play glTF animations, control bones, blend and crossfade clips on WebGL and WebGPU. Claude Code Cursor GitHub Copilot 20,100installs seo-cluster AgriciDaniel skill Clusters keywords by SERP overlap and designs hub-and-spoke content architecture with internal links. Use it before writing posts to avoid cannibalization. Claude Code Cursor GitHub Copilot 6,700installs seo-hreflang AgriciDaniel skill Audits and generates hreflang tags for multi-language and multi-region websites. Catches missing return tags, bad ISO codes, and canonical mismatches. Claude Code Cursor GitHub Copilot 6,700installs seo-images AgriciDaniel skill Checks alt text, file size, format (WebP/AVIF), responsive images, lazy loading, and metadata. Flags CLS issues and shows how many kilobytes you can save. Claude Code Cursor GitHub Copilot 6,700installs seo-plan AgriciDaniel skill Builds a complete SEO plan with competitor analysis, site architecture, and 12-month roadmap across four implementation phases. Use it when you need strategy for a new site or an existing one. Claude Code Cursor GitHub Copilot 6,700installs iam-helper-for-privileged-access-management official google skill This skill guides Google Cloud PAM entitlement changes, temporary access requests, and grant approvals. Use it when managing time-bound access rather than permanent IAM bindings. Claude Code Gemini CLI 3,900installs google-cloud-storage-fuse official google skill This skill helps decide when to use gcsfuse, tune Cloud Storage mounts, and diagnose slow workloads or rising costs. Claude Code Gemini CLI 3,900installs cloud-build-basics official google skill Teaches Cloud Build basics on Google Cloud, from enabling the API to creating and manually running a trigger. Useful for a first CI workflow. Claude Code Gemini CLI 3,900installs application-design-center-design-deploy official google skill Runs a GCP infrastructure project from local Terraform design to deployment in Application Design Center: HCL validation, plan assessment, template import. Claude Code Gemini CLI 3,900installs cmux-custom-sidebar manaflow-ai skill Skill for writing a custom cmux sidebar in a SwiftUI-like language. The sidebar binds to workspaces, tabs, PRs, and clock; hot-reloads on save; runs cmux commands on tap. Claude Code Cursor GitHub Copilot 4,800installs cmux-architecture manaflow-ai skill Guides modular Swift package architecture, strict 5-layer dependency inversion, and Swift 6 concurrency rules in the cmux codebase. Claude Code Cursor GitHub Copilot 4,800installs apple-hig nexu-io skill Integrates Apple Human Interface Guidelines for iOS, macOS, visionOS, watchOS, and tvOS into your coding agent during planning. Claude Code Cursor GitHub Copilot 3,200installs paddleocr-doc-parsing PaddlePaddle skill Extracts structured Markdown and JSON from PDFs and document scans. It captures cell-level tables, LaTeX formulas, diagrams, and preserves the reading order. Claude Code Cursor GitHub Copilot 470installs lesson rohitg00 skill Stores corrections and hard-won rules as confidence-weighted lessons, then recalls them before similar work. Useful when the same mistake keeps returning. Claude Code Cursor GitHub Copilot 3,900installs code-review-expert sanyuan0704 skill Reviews current Git changes for architecture, security, and code quality issues. Use it before merging when you need prioritized findings and actionable fixes. Claude Code Cursor GitHub Copilot 13,600installs agentation-self-driving benjitaylor skill Runs autonomous design critiques in a visible browser window and leaves feedback notes directly through the Agentation toolbar. Claude Code Cursor GitHub Copilot 7,000installs just casey skill Reference skill for just, a command runner that executes tasks from a justfile. Use when your project has a justfile or you need syntax help for recipes and commands. Claude Code Cursor GitHub Copilot 1,000installs context-mode mksglu skill This skill routes large files and command output through context-mode tools instead of Bash. Use it to inspect logs, test results, data files, or page snapshots. Claude Code Cursor GitHub Copilot 2,900installs cmux-ghostty manaflow-ai skill Enforces workflow guidelines for the Ghostty submodule and GhosttyKit compilation in cmux. Useful when syncing the fork or committing submodule pointers. Claude Code Cursor GitHub Copilot 4,700installs cmux-localization manaflow-ai skill A skill for managing translations of user-facing strings in your interface. Runs an audit whenever you change button text, menus, tooltips, or error messages. Claude Code Cursor GitHub Copilot 4,700installs cmux-release manaflow-ai skill Automates the cmux release pipeline by extracting changelog lines from pull requests, bumping versions, and running safety checks. Claude Code Cursor GitHub Copilot 4,700installs cmux-debugging manaflow-ai skill Skill for adding debug logging, diagnosing UI and runtime issues in cmux. Use when working with terminal rendering, tab lists, drag-and-drop, or testing across macOS versions. Claude Code Cursor GitHub Copilot 4,700installs