Skills
96,981 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
Design and audit usage-metering accuracy for usage-based pricing, credits, quotas, overages, AI/token billing, API calls, seats, storage, event ingestion, idempotency, late events, aggregation, reconciliation, invoices, customer visibility, disputes, corrections, and revenue leakage. Use when billable usage must be trusted by customers and finance.
SaaS application template using the Partnership model. AI proposes complete vision based on proven SaaS patterns (auth, dashboard, core features, settings), then you provide context. Perfect for web applications requiring user accounts and core functionality.
Vite frontend build tool and dev server. Fast HMR and optimized builds. USE WHEN: user mentions "Vite", "vite config", "vite.config", asks about "Vite setup", "Vite dev server", "Vite build", "fast HMR" DO NOT USE FOR: Webpack projects (use webpack skill), Next.js (uses its own bundler), Create React App (uses Webpack), library builds with Rollup only
Vite build optimization expert with deep knowledge of ESM-first development, HMR optimization, plugin ecosystem, production builds, library mode, and SSR configuration. Use PROACTIVELY for any Vite bundling issues including dev server performance, build optimization, plugin development, and modern ESM patterns. If a specialized expert is a better fit, I will recommend switching and stop.
Build modern full-stack web applications with Next.js (App Router, Server Components, RSC, PPR, SSR, SSG, ISR), Turborepo (monorepo management, task pipelines, remote caching, parallel execution), and RemixIcon (3100+ SVG icons in outlined/filled styles). Use when creating React applications, implementing server-side rendering, setting up monorepos with multiple packages, optimizing build performance and caching strategies, adding icon libraries, managing shared dependencies, or working with TypeScript full-stack projects.
Use when you are unsure what to do next in the agent-toolkit pipeline. Reads all active change manifests, interprets the current state, and tells you exactly what skill to run next and why. Also handles edge cases like kickbacks in progress, multiple concurrent changes, and epic child ordering. Invoke with phrases like "what now", "what should I do next", "where are we", or "what's the status".
Excavate why a piece of code is the way it is, from the repo's own record. Use when the user questions existing code — "why is this like this?", "why is this hardcoded?", "what's the story behind this?", "왜 이렇게 돼 있어?", "이거 왜 이래?", "이 코드 배경이 뭐야" — or whenever you are about to explain the rationale of code you did not write. Never guess the why; dig it out of blame → commits → PRs → issues and answer with evidence.
Author and review Cloudflare Workers code against production best practices. Use when writing a Worker, reviewing Worker code, configuring wrangler.jsonc, or checking for Workers anti-patterns — streaming, floating promises, global state, secrets, bindings, observability.
Complete reference for WoW Retail Combat, Damage Meter, Threat, Loss of Control, Combat Text, Combat Audio Alert, Secret Values, and Spectator APIs. Covers the 12.0.0 combat log removal (CLEU no longer available to addons), C_DamageMeter built-in damage meter, C_Secrets secret predicates, C_CurveUtil/C_DurationUtil for secret value visualization, C_LossOfControl, C_CombatText, C_CombatAudioAlert, ENCOUNTER_STATE_CHANGED, threat functions, and the new COMBAT_LOG_MESSAGE event. Use when working with combat data, damage meters, threat, loss of control, combat text, encounter events, or any combat-related addon functionality
Complete reference for WoW Retail Chat, Social, Club/Community, Friend List, Voice Chat, BattleNet, Ping, Social Queue, and Addon Messaging APIs. Covers C_ChatInfo, C_Club, C_ClubFinder, C_FriendList, C_BattleNet, C_VoiceChat, C_SocialRestrictions, C_SocialQueue, C_RecentAllies, C_PingManager, C_TTSSettings, ChatFrame functions, chat filters, addon message system, and 12.0.0 instance restrictions (SendAddonMessage blocked, chat messages may be secret). Use when working with chat output, chat channels, communities, friend lists, voice chat, BattleNet friends, addon communication, social features, or ping system
Write or critique prose that ships with a codebase — READMEs, developer guides and runbooks, CLI text, code comments, agent guides, and commit or PR descriptions. Use when drafting, improving, or reviewing these artifacts. Do NOT use for blog posts (use blog-review), design docs, or internal wikis.
When an application needs to store config, data, cache, or state files. When designing where user-specific files should live. When code writes to ~/.appname or hardcoded home paths. When implementing cross-platform file storage with platformdirs.
Zed editor configuration expert. Assists with settings.json, keymap.json, tasks.json, AI/agent panel setup, LLM provider configuration, language server tuning, themes, fonts, appearance, git integration, tool permissions, rules files, and MCP servers. Knows Zed's JSON config format, context system for keybindings, task variables, and agent profiles. Use when configuring Zed, setting up keybindings, adding LLM providers, customizing appearance, configuring language servers, setting up tasks, or troubleshooting Zed settings. Keywords: zed, zed editor, settings.json, keymap.json, tasks.json, keybinding, theme, font, appearance, agent panel, LLM provider, language server, LSP, formatter, linter, git panel, tool permissions, MCP, rules, inline assistant, task runner
Must follow when configuring a type-safe environment variable management module: based on .env.example, use Zod to generate the env schema and standardized management tooling. Trigger words: zod environment variables, type-safe env configuration, environment variable schema.
Use when building business objects with the ABAP RESTful Application Programming Model (RAP): CDS view entity, behavior definition BDEF, behavior implementation ABAP class, managed RAP, unmanaged RAP, validation, determination, action, draft-enabled, service definition, service binding, OData V4, projection view, business object BO, S/4HANA BTP ABAP environment cloud development.
Guide writing clear, enforceable Architectural Decision Records (ADRs) that work with AI-powered review systems and human teams alike. Use this skill whenever a user wants to create, improve, review, or learn about ADRs — including when they mention "architecture decision", "ADR", "document a decision", "tech decision record", or want to make an existing ADR more specific and enforceable. Also use when reviewing PRs that reference ADR compliance or when someone asks how to write decisions that automated tools can check.
Central authority for Claude Agent SDK (TypeScript and Python SDKs). Covers SDK installation, authentication (Anthropic key, Bedrock, Vertex), sessions and resumption, forking sessions, streaming vs single mode, custom tools, permissions (allowedTools, disallowedTools, permissionMode), MCP integration, system prompts (CLAUDE.md, appendSystemPrompt, outputStyle), cost tracking, todo tracking, structured outputs, hosting patterns, plugins, and SDK branding guidelines. Assists with building custom agents, configuring SDK options, and troubleshooting SDK issues. Delegates 100% to docs-management skill for official documentation.
UNNC AIM team's repository and code standards. Covers repository naming (competition / aim- academic-year / reusable), branch and Conventional Commits rules, AI-agent git behavior (never commit / push unless the user explicitly asks in the current task; never run a write-effect gh command without explicit permission — gh reads are unrestricted; never add an AI Co-Authored-By trailer; suggest a commit message at the end of a code-changing task), and formatting standards for Python (autopep8 / PEP 8), C++ (clang-format / clang-tidy), TypeScript (Prettier + ESLint, pnpm), Go (gofmt), CMake, and Markdown / YAML / JSON, with ready-to-copy canonical rule files. Use when creating or naming a repository, validating a ROS2 package.xml name, creating a branch, writing a git commit message, on any task that could involve committing, pushing, or calling gh, composing a competition workspace (git submodules under src/), or setting up Python, C++ (.clang-format / setup.cfg / .clang-tidy), TypeScript (Prettier / ESLint / pnpm) or Go (gofmt) tooling, styling a CMakeLists.txt or Markdown / YAML / JSON files, or applying the team's recommended git configuration.
Implement Elo rating system to rank items or players from pairwise comparison outcomes. Use this skill when the user needs to rank items from head-to-head matchups, build a competitive rating system, or evaluate relative quality from comparison data — even if they say 'player rating', 'ranking from comparisons', or 'competitive scoring system'.
Implement a web crawler pipeline covering URL discovery, fetching, parsing, and storage. Use this skill when the user needs to build a site crawler, audit website structure, or collect web data systematically — even if they say 'scrape a website', 'crawl all pages', or 'site audit spider'.
Provides comprehensive guidance for Angular framework including components, modules, services, dependency injection, routing, forms, and TypeScript integration. Use when the user asks about Angular, needs to create Angular applications, implement Angular components, or work with Angular features.
Anime.js 4.0 animations for Web Components — drag-drop, click feedback, swaps, cancelable motion. Use when adding animations, drag interactions, visual feedback, or motion to custom elements. Combines with web-components-architecture for lifecycle cleanup.
Apache POI for Excel file manipulation in Java applications. USE WHEN: user mentions "Apache POI", "Excel generation", asks about "Java Excel", "XLSX export", "Excel import", "POI workbook", "spreadsheet generation" DO NOT USE FOR: CSV files - use OpenCSV or standard Java CSV libraries
Write an API versioning strategy document for a service or API platform. Use when asked to define versioning policy, plan API deprecation, classify breaking changes, or document version lifecycle. Produces a complete versioning strategy with breaking-change classification table, deprecation timeline, migration guide template, and client communication template.
Dynamically validate that the implemented codebase matches architectural decisions documented in plan files. Use when validating implementation matches planning documents, checking for architecture drift, or preparing for architecture reviews.
Call Newton's C 2.6 fusion model (`Newton::c2_6_8b_fp8_260424d7a55d5e`) on the prod `/query` endpoint with text, image, and video inputs in a single stateless request — no session, no batch job, no SSE plumbing. Use this skill when the user wants per-call multimodal reasoning (describe an image, summarize a clip, classify a state from sensor + visual context) without managing session lifecycle, or when they need the Newton C checkpoint that reasons over video frames via `/query`. Covers the request shape per modality, the two image-attachment paths (file_ids vs base64), multi-image mode, both video paths (`.mp4` + `max_frames`, and client-sampled frames + `query_metadata`), generation parameters, JSON-output prompting, latency budgets, and the C 2.6 identifier gotcha. Do NOT use for streaming / session-based activity monitoring, large multi-file batch jobs, or time-series embedding (KNN / anomaly) classification.
Jira and Confluence integration for Atlassian Cloud. Use when the user needs to search issues, manage sprints, read Confluence docs, create/update pages, work with epics and backlogs, or any Atlassian workflow. Triggers include "jira", "confluence", "sprint", "backlog", "ticket", "issue", "epic", or references to Atlassian content.
Build multiplayer Decentraland scenes with a headless authoritative server. Covers isServer() branching, registerMessages() for client-server communication, validateBeforeChange() for server-only state, Storage (world and player persistence), EnvVar (environment variables), and project structure. Use when the user wants authoritative multiplayer, anti-cheat, server-side validation, persistent storage, or server messages. Do NOT use for basic CRDT multiplayer without a server (see multiplayer-sync).
Provides comprehensive guidance for Avue Form component including form configuration, validation, and dynamic forms. Use when the user asks about Avue Form, needs to create dynamic forms, implement form validation, or work with form configurations.
Use when storing credentials, tokens, or secrets securely, debugging SecItem errors (errSecDuplicateItem, errSecItemNotFound, errSecInteractionNotAllowed), managing keychain access groups, or choosing accessibility classes. Covers SecItem API mental model, uniqueness constraints, data protection, biometric access control, sharing between apps, and Mac keychain differences.
World-class backend engineering - distributed systems, database architecture, API design, and the battle scars from scaling systems that handle millions of requestsUse when "backend, api, database, postgres, mysql, mongodb, redis, graphql, rest, authentication, authorization, caching, queue, background job, webhook, migration, transaction, n+1, rate limit, server, node.js, python, go, backend, api, database, architecture, performance, reliability, security" mentioned.
Build robust backtesting systems for trading strategies with proper handling of look-ahead bias, survivorship bias, and transaction costs. Use when developing trading algorithms, validating strategies, or building backtesting infrastructure.
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.