Skills
98,639 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
A complete security skill suite for OpenClaw, Hermes, PicoClaw and NanoClaw agents (and variants). Protect your SOUL.md (etc.) with drift detection, live security recommendations, automated audits, and skill integrity verification. All from one installable suite.
Three.js skills for creating interactive 3D elements and experiences on the web. Covers scene setup, geometries, materials, lighting, textures, animation, loaders, custom shaders, post-processing, interaction, performance, and React Three Fiber, with WebGL and WebGPU/TSL guidance for a current three.js release.
Enforces CustomPainter/Canvas discipline — the View/Painter/Scene split with a dumb painter fed one immutable Scene value type, shouldRepaint as a single value compare kept strictly separate from the AnimationController-as-repaint animation path, one shared affine transform read by BOTH painter and hit-tester (toCanvas/toLogical exact inverses, never re-derive scale), geometry hit-testing (integer lattice or rasterized region-ID buffer, never Path.contains), zero-allocation paint(), gesture-as-pure-translator emitting a typed command to a Notifier (never mutating in the handler), ExcludeSemantics + sibling Semantics speaking display values with redundant non-colour encoding, measured TextPainter fitting, first-party RoundedSuperellipseBorder, physical-pixel hairlines, and Directional-only geometry. Use when writing or reviewing a CustomPainter/CustomPaint, gestures on a canvas, tap/drag hit-testing, canvas animation, measured text fitting, or Semantics over custom-drawn pixels.
Explain Arduino and embedded compiler, upload, boot, power, and runtime errors in plain English. Use when a user shares an error or failure from Arduino IDE, Arduino CLI, PlatformIO, or a vendor-specific tool. Separate build, upload, hardware, and system evidence and give a board-specific recovery path without assuming UNO, ESP32, or RP2040 behavior.
Guides developers integrating EUrouter into their applications. EUrouter is an OpenAI-compatible AI gateway for EU/GDPR compliance. Use when integrating EUrouter, switching from OpenRouter or OpenAI, configuring EU data residency, routing AI requests to EU providers, managing API keys, or asking about EUrouter's API for chat completions, embeddings, streaming, tool calling, vision, model routing, or GDPR compliance features
Comprehensive guide to the Hookdeck Event Gateway for receiving, routing, and delivering webhooks and events. Covers setup, connections, authentication, local development, monitoring, and API automation. Use when receiving webhooks, setting up webhook endpoints, testing webhooks locally, configuring webhook relay or event queue, event routing, webhook retry, webhook monitoring, third-party routing, asynchronous APIs, or local webhook development. For provider webhooks (Stripe, Shopify, Chargebee, GitHub, etc.), use together with the matching skill from hookdeck/webhook-skills; do not only parse JSON — use provider SDK verification and event construction (e.g. Stripe constructEvent).
Use when existing code has untestable dependencies that prevent writing tests — direct construction of collaborators, static or global function calls, tight coupling to external systems, or singleton access patterns. Specifically for identifying substitution points (seams) that make legacy or tightly coupled code testable without editing at the call site. Do NOT use for greenfield TDD (see tdd), general test writing patterns (see testing), or refactoring already-tested code (see refactoring)
Enterprise SaaS frontend — Tailwind v4, shadcn/ui, Next.js App Router or Vite SPA, accessibility, responsive design, component patterns. Use when: React component, Next.js page, frontend UI, Tailwind, shadcn, accessibility, a11y, responsive design, form validation, server component, client component, design system, dark mode, SaaS UI, dashboard, pricing page, enterprise UI, data table, landing page, Vite, React Router, SPA, single page app.
Official Google Stitch skills for the design-to-code pipeline: generate and edit Stitch screens, DESIGN.md and SITE.md management, prompt enhancement, React / React Native / shadcn/ui component generation, code-to-design upload, and iterative Stitch build loops.
Registers state-type triggers that automatically fire functions when key-value state is created, updated, or deleted within a scope. Use when building reactive side effects, change watchers, audit logs, cache invalidation, notification dispatchers, or any observer pattern where data changes should trigger downstream processing.
Modernize QUnit unit tests and OPA5 integration tests to the UI5 Test Starter concept. Use this skill when: - The linter reports `prefer-test-starter` for *.qunit.html or *.qunit.js files - Test HTML files use manual sap-ui-core.js bootstrapping instead of Test Starter's runTest.js/createSuite.js - Test JS files use Core.ready(), Core.attachInit(), or jsUnitTestSuite instead of sap.ui.define - OPA test HTML files exist with per-test Opa5.extendConfig and manual bootstrapping - An AllJourneys.js orchestrator loads OPA journeys dynamically - OPA journeys call `iStartMyUIComponent` instead of `iStartMyAppInAFrame` - User asks to modernize tests, modernize test infrastructure, or adopt Test Starter Handles unit tests (Core.ready removal, sap.ui.define wrapping) and OPA challenges (page-object imports, Opa5 config, journey orchestration, QUnit 1.x assert modernization, in-window-to-iframe launcher migration). Trigger on: prefer-test-starter warnings, test modernization requests, iStartMyUIComponent.
Scripted, branded onboarding for LaunchDarkly. Fixed sequence with LaunchDarkly voice and tone. Enforces step completion before advancing. Redirects drift. Use when the user wants to set up LaunchDarkly from scratch or asks to start onboarding.
Explain a body of work plainly so a person actually understands it. Runs the `how` and `why` skills and weaves what they find into one clear explanation. Use for 'teach me this', 'help me really understand X', 'explain this change or subsystem to me'.
Apply to any non-trivial work, not just bulk work: edits, migrations, analyses, checks. Build the tool that does it or proves it (codemod, script, generator, or a skill your subagents follow) instead of working by hand. The tool is the artifact a reviewer can rerun
GLSL shader development: ray marching, SDF modeling, fluid simulation, particle systems, procedural generation, lighting, and post-processing. Official MiniMax skill for creating real-time visual effects in WebGL and creative coding contexts (ShaderToy-compatible techniques).
SwiftUI skills for iOS 26: Liquid Glass, a UI/UX review engine, component patterns, on-device AI (Foundation Models), and vendored Pro skills for SwiftUI review, Swift Testing, Swift concurrency, and SwiftData. The author states they were verified against WWDC 2025 docs and Xcode 26.3. Different from swiftui-patterns, which focuses on general SwiftUI best practices.
Breaks requirements down into a structured task list and generates a task management system for long-running Agents (based on Anthropic Effective harnesses methodology). Automatically triggers when users need to manage multi-session development tasks, track feature completion, or request “break down tasks,” “task management,” or “project planning.”
UI5 MDC (sap.ui.mdc) best practices for OData V4 delegate-based controls. Use when creating or troubleshooting MDC FilterBar, Chart, Field, FilterField, ValueHelp, Link, MultiValueField, or Table. Covers delegate pattern, fetchProperties, PropertyInfo, p13nMode, updateBindingInfo, Condition.createCondition, and common errors (delegate not loaded, chart no data, fields not appearing). Also applies to JSON model (non-OData) MDC usage. Triggers: “MDC”, “sap.ui.mdc”, “delegate pattern”, “fetchProperties”, “PropertyInfo”, “MDC personalization”, “p13nMode”, “MDC field not rendering”, “MDC chart not binding”, “MDC conditions”, OData V4 freestyle with model-driven controls. Keywords: sap.ui.mdc, FilterBar, Chart, Field, FilterField, ValueHelp, Link, MultiValueField, delegate, fetchProperties, updateBindingInfo, PropertyInfo, OData V4, JSON model, TypeMap, p13nMode, conditions, FilterBarDelegate, ChartDelegate, ValueHelpDelegate, LinkDelegate, Condition.createCondition
Use when asking about 'FileProtectionType', 'file encryption iOS', 'NSFileProtection', 'data protection', 'secure file storage', 'encrypt files at rest', 'complete protection', 'file security' - comprehensive reference for iOS file encryption and data protection APIs
Turns plain-language chart design requests into exact Bklit UI (@bklit shadcn registry) components and props, styled to fit the host app. Use when someone describes how a chart should look rather than naming props, e.g. "diagonal pattern background that fades out", "squircle bars", "3D glass bars", "hatched area", "dot grid", "skeleton loading state", "dashed forecast", "half donut", "make the charts match my brand / dark mode / border radius". Detects the project's Tailwind version, colour format, dark-mode strategy, radius, and existing chart tokens, then picks a proven recipe, installs the right @bklit/<item>, adapts colours to theme tokens, and states honestly when Bklit has no prop for the request. Also use when theming or restyling Bklit charts.
Debug the signals pipeline locally end-to-end. Covers emitting test signals from fixtures, monitoring Temporal workflows via the REST API, reading sandbox agent logs from object storage, inspecting Docker sandbox containers, and diagnosing common failures (stale ClickHouse embeddings, agentsh network denials, inactivity timeouts). Use when a signal isn't reaching the inbox, a signal-report-summary workflow fails, or a sandbox task run times out.
Check documentation impact before completing a change or declaring it ready to ship. Use when a change may affect user, operator, or developer instructions, when asked whether docs need updates, or for a documentation pass. Supports author and read-only review modes without requiring a PR or spec.
Official Expo skills for building, deploying, upgrading, and debugging Expo apps, from the Expo team. Covers Expo Router, native UI and animation, data fetching, native modules, SDK upgrades, and Expo Application Services (EAS): builds and store submission, hosting, workflows, and OTA updates.
Expert Flutter and Dart development skill for building beautiful, performant, and maintainable applications. Use when users request Flutter/Dart development tasks including creating apps, widgets, screens, implementing features, debugging, testing, state management, navigation, theming, layouts, or working with Flutter projects. Covers mobile, web, and desktop platforms with modern best practices, Material Design, responsive UI, and code quality standards.
Use when testing, debugging, or making targeted improvements to rendered frontend apps through the Build Web Apps or web dev plugin: local dev servers, UI regressions, interaction bugs, console errors, responsive layout, and visual QA. Check whether the Browser plugin is available and use it first when it is; otherwise use regular Playwright with the recorded reason
Guides feature development for full-stack applications with an architecture focus. Covers Next.js App Router patterns, NestJS backend services, database models, data workflows, and seamless integration. Use when adding features, refactoring existing code, or planning major changes
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.