Skills
101,174 packaged capabilities and playbooks for agents. Install any of them with one command.
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Collaborative design system creation using Atomic Design methodology with a structured seven-phase process (Philosophy, Tokens, Atoms, Molecules, Organisms, Templates, Assembly). Produces a specification artifact with philosophy traceability, named design tokens, and full component hierarchy. Use when creating a design system, defining a visual language, specifying UI tokens (colors, typography, spacing), building a component catalog, or planning component architecture before implementation. Triggers on: "create a design system", "define design tokens", "component library spec", "visual language", "atoms and molecules", "style guide", "UI philosophy", "component hierarchy". NOT for: implementing components in code (use atomic-design), choosing frameworks (use architecture-decisions).
Analyze a codebase to detect its language, framework, conventions, and CI gates. Run this on first use in a project to generate stack context that all coding principle skills reference. Use when the user says "detect stack," "analyze this project," or "what's this codebase using."
Development workflows for WordPress ActivityPub plugin including wp-env setup, testing commands, linting, and build processes. Use when setting up development environment, running tests, checking code quality, building assets, or working with wp-env.
Validates feature implementation against PRD, Tech Spec, and Tasks through E2E testing via available MCP tools, accessibility verification, and visual analysis. Documents all bugs found with screenshot evidence and generates a comprehensive QA report. Use when the user asks to run QA, validate a feature, or test implementation completeness. Do not use for code review, bug fixing, or task implementation.
Initializes the project for the DO Framework: analyzes it, inventories installed skills and MCP servers (reporting gaps), and writes the framework's local context file `.do/context.md` (summary, conventions, commands, skills and MCPs). Never edits an existing project instructions file (CLAUDE.md, AGENTS.md, .github/copilot-instructions.md, .cursor rules); when the project has none, offers to create one with project content only (no framework, skill or MCP references). Installs the orchestration agents and commands. Arguments: "agents" (install agents/commands only), "refresh" (re-detect skills/MCPs only). Use to initialize or configure the agent-assisted environment. Not for PRDs, implementation, review or QA.
Systematic documentation audit and maintenance. This skill should be used when documentation may be stale, missing, or misorganized — after feature work, refactors, dependency upgrades, or as a periodic health check. It prescribes folder structure for docs/ and manual/, dispatches haiku subagents for codebase/doc scanning, and routes doc creation to specialized agents (reference-builder, technical-writer, learning-guide) with docs-architect as quality gate.
Coordinate Elastic Stack docs releases: classify versions, route 8.x vs 9.x PRs, edit elastic/dev tracking issues, handle same-GA supersession, draft Slack #docs reminders, and watch docs-internal-workflows deploys. Use when the user says "how's my release", "how's my release doing", or asks for release status; also when coordinating docs releases, opening coordinator PRs, editing elastic/dev issues, drafting release reminders, or working with assembler.yml, versions.yml, or conf.yaml.
Define and maintain the codebase's shared domain terms and architectural decisions. Use when a domain term is unclear or disputed, when a lasting architectural decision is made or stops holding, when the user asks to update or clean up the glossary or decision records, or when another skill runs it.
Drizzle ORM against PostgreSQL inside a Next.js App Router app. Covers client construction (globalThis singleton across HMR, serverless pool sizing, `prepare:false` behind PgBouncer/Supavisor, driver choice when you need interactive transactions, `server-only`), reads in Server Components under Next.js 16 Cache Components (`use cache` superseding `unstable_cache` and the `revalidate`/`dynamic` segment configs, Suspense boundaries, React `cache()` dedupe), Server Actions (authorization inside the action, `updateTag` vs `revalidateTag`, `after()`), Postgres schema types (timestamptz, identity vs serial, jsonb, numeric-as-string, bigint modes), drizzle-kit migrations (generate vs push, CONCURRENTLY outside the migrator, NOT VALID constraints, rename prompts), transactions and pooled connections, and Postgres query traps (keyset pagination, count cost, driver-dependent `db.execute()` shape, NOT IN nulls, prepared statements). Use when writing or reviewing Drizzle + Postgres code in Next.js.
Reason about drug repurposing strategies in HCLS — choosing between target-based and phenotype-based approaches, evaluating mechanism-of-action overlap, querying drug-gene interaction databases, assessing clinical translatability, and ranking candidates by evidence strength. Use when the user asks to repurpose a drug, find approved drugs for a new indication, evaluate a repurposing candidate, query DGIdb or OpenTargets, assess drug-target interactions, design a repurposing study, rank repurposing evidence, or evaluate translatability of a candidate. Triggers include "drug repurposing", "repurpose", "repositioning", "new indication", "off-label use", "target-based repurposing", "phenotype-based repurposing", "CMap", "L1000", "DGIdb", "OpenTargets", "DrugBank", "ChEMBL", "mechanism of action overlap", "drug-gene interaction", "translatability", "existing safety data", "repurposing evidence hierarchy".
Create, restructure, review, audit, or migrate DeepSeek Harness Markdown documentation, package READMEs, and the documentation website using audience-first hierarchy, kind-mapped YAML metadata, bilingual line alignment, summary/contents navigation, progressive user-to-developer detail, executed-operation fact-checking, and repository validation. Use for new or revised DSH docs, docs-tree organization, documentation-quality audits and budgets, website page publishing, and bilingual documentation structure changes.
Build DSPy evaluation harnesses with rich-feedback metrics that are essential for GEPA optimization. Use when writing a metric function, calling dspy.Evaluate, splitting dev/val sets, debugging "why is my optimizer not improving?", or designing CI-ready DSPy eval suites.
Packaging, code signing, notarization, and distribution for Electrobun desktop applications. This skill covers building production bundles, creating installers and distributable packages, code signing for Windows and macOS, Apple notarization for Gatekeeper, auto-updater implementation, delta updates, update servers, cross-platform build processes, CI/CD integration, app icons and resources, version management, release workflows, Windows SmartScreen requirements, macOS DMG creation, Linux package formats (deb, rpm, AppImage), and distribution best practices. Use when preparing app for production, implementing auto-updates, setting up code signing certificates, troubleshooting distribution issues, creating installers, configuring update servers, building for multiple platforms, or releasing new versions. Triggers include "build", "package", "distribute", "code sign", "notarize", "installer", "auto-update", "release", "production build", "DMG", "updater", "delta update", or "certificate".
Question a set of requirements or running commitments (a plan, spec, backlog, process, rule set, or one person's goals, projects and side projects) in Musk's fixed order: make your requirements less dumb, delete the part or process, simplify or optimize, accelerate cycle time, automate. Name the goal first, give every item a named source, what it buys, what depends on it and what re-adding it costs, propose removals and deferrals, stop for approval, and never touch an externally mandated constraint. Use when a plan is about to be built as written, or when goals, commitments or side projects compete for the same time.
Search and retrieve public web sources with Exa when the user explicitly chooses Exa or the project already integrates its API. Covers bounded retrieval, source verification, freshness, and structured search output. Do not activate for generic research or replace another selected search provider.
Cross-site scripting (XSS) vulnerability detection and exploitation. Supports reflected XSS, stored XSS, DOM-based XSS, and blind XSS testing. Use this skill when user mentions XSS, cross-site scripting, script injection, or needs to test JavaScript injection in parameters, forms, headers, or DOM sources.
Plan, draft, audit, and publish posts for a Facebook Page. Use when the user wants to write a short punchy Page post or a longer story post, remove AI tells from a draft, reverse-engineer the hook from a high-share Page post, draft replies to comments on their Page, or plan a week of Facebook Page content. Page posts publish via the Publora API. User provides notes or a Facebook Page post URL, the skill drafts, the user approves, then it publishes.
Apply when deciding, designing, or implementing client-side state with FastStore SDK hooks like useCart, useSession, or useSearch. Covers cart manipulation, session handling, faceted search, and analytics event tracking from @faststore/sdk. Use for any interactive ecommerce feature that relies on FastStore's built-in state management.
Run a Feast agent on BNB Smart Chain with the user's Binance Agentic Wallet, and enter it in the Feast league. Prompt mode first: the user writes a strategy prompt and you, their own agent, trade by it, reading FL data (coins in BNB, the book, the league, notes) and acting with FL buy, FL sell, and FL note; the runtime asks you every 5 minutes by default and a steady floor keeper backs it, unless turned off. Also turns one sentence into one of six presets (sniper, momentum, copy, launch-and-run, DCA, steady), or audits and runs the user's own script in a warm-up tier. Always under hard limits the agent cannot switch off and a cap of 0.15 BNB at work; one command enters the league and runs the agent (FL enter: the wallet's Binance Agent ID, one signed message, no coin needed, an optional meme). Use when the user wants an agent to buy, sell, or launch Feast coins, writes or shares a trading strategy or prompt, mentions the Feast league or entering it, or asks to start, stop, change, or check their Feast agent
Complete PyAV (Python FFmpeg bindings) integration guide. PROACTIVELY activate for: (1) PyAV installation on Ubuntu/Windows/macOS, (2) Building PyAV against custom FFmpeg, (3) FFmpeg 7.0/8.0+ compatibility, (4) av.open() video/audio decoding, (5) VideoFrame/AudioFrame NumPy conversion, (6) Filter graph processing, (7) Video encoding with H.264/H.265/AV1, (8) Seeking and keyframe extraction, (9) RTSP/network streaming with PyAV, (10) Memory management and thread safety, (11) Error handling with FFmpegError, (12) Subtitle extraction, (13) Container manipulation and remuxing, (14) Performance optimization and threading. Provides: Complete PyAV API patterns, installation guides for all Ubuntu versions, FFmpeg 8.0+ compatibility matrix, type-safe examples, memory management best practices, filter graph examples, encoding/decoding patterns.
Deploy the deterministic half of Einstein Pre-Work Brief on Field Service Mobile to a target org — prompt template, Lightning Data Service, licenses and permission sets, the Work Order layout field, and a scheduled test Work Order. Use this skill when a user asks to deploy, set up, enable, or configure Einstein Pre-Work Brief on Field Service Mobile.
Use when the user says 'figma to gutenberg', 'figma to blocks', or hands over a Figma frame to rebuild on a WordPress site that uses the block editor. Maps the Figma node tree to core Gutenberg blocks, registers the frame's palette in Global Styles, and writes to a draft, so nothing live is touched.
Invoke for game jam participation -- 48-72 hour compressed development workflow. Triggers on: "game jam", "jam mode", "Ludum Dare", "GMTK Jam", "Global Game Jam", "Brackeys Jam", "48 hours", "jam submission". Do NOT invoke for normal development timelines (use game-start). Part of the AlterLab GameForge collection.
Run a game development post-mortem rooted in the GDC tradition. Triggers on: "retrospective", "retro", "post-mortem", "lessons learned", "what went right", "what went wrong", "kill list review". Do NOT invoke for design document review (use game-design-review) or playtesting (use game-playtest). Part of the AlterLab GameForge collection.
Generate a diverse, inclusive persona set for a product. Chains: disability-inclusive-personas, situational-impairment-mapping, assistive-technology-scenarios, ability-spectrum-mapping. Use when creating a new persona set or expanding an existing one to be more inclusive.
Use when releasing a Git repository version — tagging, merging release branches into main, resolving conflicts, or syncing changes between release branches. Handles ambiguous tag naming (v-prefix vs plain), unknown main branch (master/main/develop), ff-only merge method (forces cherry-pick strategy), protected-branch rules, cross-release hash-sensitive sync, and MR/PR extra-file cleanup. Single or multi-repo. Triggers — 「发版」「打tag」「发布版本」「版本发布」「release流程」「git-release」「multi-repo release」「release同步到另一个release」 / release a version, tag and merge, finish release branch.
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.