Skills
99,951 packaged capabilities and playbooks for agents. Install any of them with one command.
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Show an app working on a web page by drawing it live in HTML instead of recording it. A Mac-style window plays the app step by step, and every frame is a pure function of one clock, View(t), drawn on a fixed 1200 × 750 stage that one CSS scale fits to any width. The pointer is scripted, labels and pictures come from the real app, a steps bar sits under the window, it plays only while on screen, and reduced motion gets designed end frames. Use when someone wants a product demo, an animated app window or hero, a feature walkthrough, "the UI animated and simulated in HTML", "like a screen recording but HTML", an interactive product tour on a landing or download page, or wants to replace screen recordings, GIFs or MP4s of their UI with crisp live HTML. Also use to build many such windows at once with helper agents, or to scrub, freeze and screenshot them.
Master Robert Cialdini's 6 (+1) Principles of Persuasion from "Influence: The Psychology of Persuasion" (1984). Ethically apply the psychology of compliance to marketing. Use when: Designing landing pages that convert; Writing sales copy and email sequences; Creating pricing and offer structures; Building testimonial and social proof strategies; Developing referral and loyalty programs
Persistent research knowledge base that accumulates papers, ideas, experiments, claims, and their relationships across the entire research lifecycle. Inspired by Karpathy's LLM Wiki pattern. Use when user says \"知识库\", \"research wiki\", \"add paper\", \"wiki query\", \"查知识库\", or wants to build/query a persistent field map.
Use when setting up URP (or choosing URP vs HDRP), configuring URP assets and quality tiers for PC and phones, lighting a stylized or realistic Unity scene (sun, sky, baked or mixed lightmaps, Shadowmask, Adaptive Probe Volumes, reflection probes), or fixing blurry shadows, light leaks, gray bakes, washed-out images, tonemapping and grading, bloom too expensive on mobile, TAA, STP or MSAA choices, GPU Resident Drawer setup, shader warm-up hitches, or a custom shader that vanished or lost its baked light.
Use when making or fixing real-time VFX in Unity 6.3: explosions, fireballs, projectiles with muzzle, trail and impact, spells, slashes, shockwaves, smoke, sparks, Particle System (Shuriken) or VFX Graph ('VFX Graph explosion', 'particles look bad', 'effect kills fps on mobile', 'too much overdraw'), mesh effects with scrolling textures, an uber VFX shader with LUT ramps, Custom Data and custom vertex streams, flipbooks and VFX textures, pink particles after URP upgrade, VFX budgets and readability.
Build, integrate, and review Stream Chat, Video, and Feeds in Android apps. Use for Jetpack Compose, Android Studio, and Gradle project work - including Stream package setup, auth and token wiring, screen blueprints, read-only integration reviews before going live, AI assistants and LLM chat (ChatGPT-style apps, streaming replies, thinking indicators, stop generating) with stream-chat-android-ai-compose, and any follow-up Stream UI work such as adding screens, navigating between channel list and channel/message screens, channel tap handling, deep links, push routing, theming, custom channel/message UI, video calling flows (joining/starting calls, ringing, custom call controls and participant tiles), and Feeds surfaces (timeline, activity composer, threaded comments, follow graph / profile, notification feed, stories).
Use for all CEL and mito work on integrations that collect from APIs — writing CEL programs, cel.yml.hbs templates, manifest configuration, mock-first development with the mito CLI, system test mock setup, and answering CEL/mito questions. Load this skill whenever any data stream uses the cel input type.
Professional code review skill for Claude Code. Automatically collects file changes and task status, and proactively fixes P0/P1/P2 issues after review. Triggers when the working directory has uncommitted changes, or reviews the latest commit when clean. Triggers: code review, review, 代码审核, 代码审查, 检查代码
When the user wants to improve their ability to run thorough needs assessments before proposing solutions. Also use when the user mentions “discovery calls,” “needs assessment,” “understanding requirements,” “before the demo,” “qualifying meetings,” or “uncovering pain.”
Redesign mobile app UI to feel unmistakably iOS-native with modern Apple-like glass materials (translucency, blur, depth). Use this skill when designing iOS-first interfaces that leverage iOS material hierarchy (ultra-thin/regular/thick), SF Pro typography, safe-area patterns, and system component behaviors—without overdoing glass effects.
Build targeted prospect lists by analyzing LinkedIn profiles, extracting job titles, companies, locations, and recent activity. Identifies decision-makers, tracks job changes for warm outreach, and enriches contact data. Use when users need to find prospects, build lead lists, or track decision-maker movements.
Routes questions about the Cursor Origin API to the right section of the Origin docs and names the few rules to check first. Use when a task mentions Origin, the Origin API, Origin Apps, or Origin webhooks, including creating an Origin App, authenticating as one, calling Origin endpoints, or handling Origin webhook deliveries.
Trade prediction markets on Polymarket - buy outcome tokens (YES/NO and categorical markets), check positions, list markets, manage orders, redeem winning tokens, and deposit funds on Polygon. Trigger phrases: buy polymarket shares, sell polymarket position, check my polymarket positions, list polymarket markets, get polymarket market, cancel polymarket order, redeem polymarket tokens, polymarket yes token, polymarket no token, prediction market trade, polymarket price, get started with polymarket, just installed polymarket, how do I use polymarket, set up polymarket, polymarket quickstart, new to polymarket, polymarket setup, help me trade on polymarket, place a bet on, buy prediction market, bet on, trade on prediction markets, prediction trading, place a prediction market bet, i want to bet on, deposit, top up, fund, transfer in, add funds, fund polymarket, top up polymarket, add funds to polymarket, recharge polymarket, deposit usdc, deposit eth, polymarket deposit, BTC 5-minute, ETH 5-minute, 5-minute market, 5min market, short-term market, list 5-minute, BTC up or down, find 5-minute, view 5-minute, 5m updown, crypto 5m, 5-minute up-down, updown market, BTC 5min, ETH 5min, SOL 5min, 5-minute prediction.
Extract design tokens, text styles, and variables from a Figma design system and produce a design-tokens.json plus ready-to-use QML singletons. Use this skill whenever someone wants to pull their design system out of Figma — whether they say "export tokens from Figma", "get design tokens", "set up my design system", "read our Figma design system", "get Figma variables into QML", "pull our color palette from Figma", "import design tokens", "extract colors/typography/spacing from Figma", or similar. Trigger this skill at the start of any design-system workflow that involves a Figma source
Unit testing for TypeScript/NestJS projects using Jest, @golevelup/ts-jest (DeepMocked/createMock), and in-memory databases, with AAA structure. Use whenever the user is working on `.spec.ts` files or asks to set up Jest, write/add tests for a service/usecase/controller/guard/interceptor/pipe/filter, mock dependencies, review test quality or coverage, run unit tests, debug failing or flaky tests, or optimize test performance and open handles.
Upgrade Datadog Browser SDK from v6 to v7. Use when encountering removed options like betaEncodeCookieOptions, allowFallbackToLocalStorage, trackBfcacheViews, usePciIntake, changed APIs like forwardErrorsToLogs, startDurationVital, stopDurationVital, or when a project references datadoghq-browser-agent.com CDN with /v6/ paths.
Pulls Bigdata.com (RavenPack) financial and news data via the official bigdata-client SDK and /v1/* REST endpoints — structured financials, prices, analyst estimates, entity-sentiment series, annotated chunk search, screener. Use when the Bigdata MCP's tearsheets/search feel thin and you need the machine-readable substrate: mentions of Bigdata.com, RavenPack, a bd_v2_ key, rp_entity_id, or chunk/query_unit cost.
Use when a developer wants to deploy, host, or run a Slack app somewhere it keeps working after the local process stops, or mentions Railway, Heroku, `railway up`, `git push heroku`, `slack deploy`, a `deploy` hook in `.slack/hooks.json`, hosting a Socket Mode or Request URL (HTTP) Bolt app, deploying from Windows, graduating an app out of a developer sandbox, or tearing down a deployed app.
Generate Excalidraw diagrams from natural language descriptions. Use when asked to "create a diagram", "make a flowchart", "visualize a process", "draw a system architecture", "create a mind map", or "generate an Excalidraw file". Supports flowcharts, relationship diagrams, mind maps, and system architecture diagrams. Outputs .excalidraw JSON files that can be opened directly in Excalidraw.
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.