Skills
97,905 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
Expert patterns for Godot 3D PBR materials using StandardMaterial3D including albedo, metallic/roughness workflows, normal maps, ORM texture packing, transparency modes, and shader conversion. Use when creating realistic 3D surfaces, PBR workflows, or material optimization. Trigger keywords: StandardMaterial3D, BaseMaterial3D, albedo_texture, metallic, metallic_texture, roughness, roughness_texture, normal_texture, normal_enabled, orm_texture, transparency, alpha_scissor, alpha_hash, cull_mode, ShaderMaterial, shader parameters.
Expert patterns for Godot 3D physics (Jolt/PhysX), including Ragdolls, PhysicalBones, Joint3D constraints, RayCasting optimizations, and collision layers. Use for rigid body simulations, character physics, or complex interactions. Trigger keywords: RigidBody3D, PhysicalBone3D, Jolt, Ragdoll, Skeleton3D, Joint3D, PinJoint3D, HingeJoint3D, Generic6DOFJoint3D, RayCast3D, PhysicsDirectSpaceState3D.
Use when asked to "shape up", "run a shaping session", "set an appetite", "scope a project without estimates", "betting table", or "ship in fixed cycles". Helps teams escape estimate-driven development and Scrum fatigue. The Shape Up method (created by Ryan Singer at Basecamp/37signals) uses fixed time boxes, variable scope, and collaborative shaping to ship meaningful work predictably.
Sui Move smart contract development. Use when writing, reviewing, or debugging Move code on Sui. Covers Move abilities (key, store, copy, drop), TxContext, init functions, One-Time Witness, package publishing and upgrades, resource safety, events, and coins. Also use when the user asks about struct abilities, UID, how to destroy objects, or how to create a fungible token. For object model and ownership, see the `object-model` skill. For programmable transaction blocks, see the `ptbs` skill. For frontend dApp development, see the `frontend-apps` skill. For project setup and Move.toml, see the `sui-move-project` skill.
Tailwind CSS v4 fundamentals — installation, CSS-first configuration, and 2025-2026 best practices. PROACTIVELY activate for: (1) installing Tailwind v4 (Vite plugin, PostCSS, CLI), (2) CSS-first configuration with @theme, (3) @import "tailwindcss" syntax, (4) v3-to-v4 migration, (5) new utilities introduced in v4 (text-shadow, mask-*, container queries), (6) Lightning CSS engine, (7) zero-config content detection, (8) Oxide engine performance, (9) @utility for custom utilities, (10) @variant for custom variants. Provides: v4 install guide, @theme reference, v3-to-v4 migration checklist, new utility catalog, and @utility/@variant examples.
Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui). Use for complex artifacts requiring state management, routing, or shadcn/ui components—not for simple single-file HTML/JSX artifacts.
Effect-TS (Effect) guidance for TypeScript. Use when building, refactoring, reviewing, or explaining Effect code, especially for: typed error modeling (expected errors vs defects), Context/Layer/Effect.Service dependency wiring, Scope/resource lifecycles, runtime execution boundaries, schema-based decoding, concurrency/scheduling/streams, @effect/platform APIs, Effect AI workflows, and Promise/async migration.
Simplest distributed training API. 4 lines to add distributed support to any PyTorch script. Unified API for DeepSpeed/FSDP/Megatron/DDP. Automatic device placement, mixed precision (FP16/BF16/FP8). Interactive config, single launch command. HuggingFace ecosystem standard.
Add Opik tracing to an existing app and verify a real trace lands. Installs the Opik package, detects the language and LLM framework, adds the minimum tracing, runs a safe representative path, confirms a trace in Opik, and returns the trace link. Use for “instrument my code”, “add opik tracing”, “add observability”, “trace my agent”. Not for building a new app from scratch, or a review-only pass with no code changes.
Delegate coding tasks to Google Jules AI agent for asynchronous execution. Use when user says: 'have Jules fix', 'delegate to Jules', 'send to Jules', 'ask Jules to', 'check Jules sessions', 'pull Jules results', 'jules add tests', 'jules add docs', 'jules review pr'. Handles: bug fixes, documentation, features, tests, refactoring, code reviews. Works with GitHub repos, creates PRs.
Take the current branch from done-coding to merge-ready in one pass — review the diff against AGENTS.md, deslop, commit and push, open a PR using rule-validate's PR copy, then babysit until mergeable. Use when the user types `/ship` or asks to ship, finalize, or land the current branch
Implement Syncfusion Blazor Scheduler component for comprehensive appointment and event scheduling. Use this when building calendar interfaces, managing appointments with CRUD operations, implementing multiple view modes, setting up recurring events, or handling timezone-aware scheduling. This skill covers views (day, week, month, timeline, agenda), drag-and-drop functionality, resizing, resources, localization, data binding, state persistence, and advanced customization options for scheduling applications.
Review the changes since a fixed point (commit, branch, tag, or merge-base) along two axes: Standards (does the code follow this repo's documented coding standards?) and Spec (does the code match what the originating issue/spec asked for?). Runs both reviews in parallel sub-agents and reports them side by side. Use when the user wants to review a branch, a PR, work-in- progress changes, or asks to "review since X".
Linux device driver skill for kernel driver development. Use when writing platform/i2c/spi drivers, char device lifecycle, IRQ handling, DMA engine API, regmap, power management, or udev rules. Activates on queries about platform_driver, request_irq, dma_alloc_coherent, regmap, pm_runtime, or char devices.
Create new scientific tools for the ToolUniverse framework with proper structure, validation, and testing. Use when users need to add tools to ToolUniverse, implement new API integrations, create tool wrappers for scientific databases or services, expand ToolUniverse capabilities, or follow ToolUniverse contribution guidelines. Supports creating tool classes, JSON configurations, validation, error handling, and test examples.
Comprehensive Flutter UI/UX development skill for creating beautiful, responsive, and animated mobile applications. Use when the user asks to: (1) Build Flutter UI components or screens (2) Implement animations and transitions (3) Design responsive layouts (4) Create custom widgets and themes (5) Optimize UI performance and accessibility. Triggers: "create Flutter UI", "build Flutter screen", "Flutter animations", "responsive Flutter layout", "custom Flutter widgets", "Flutter theme design"
Evidence-first development — surround the implementation with an executable spec and a gauntlet of constraints (tests, types, coverage, mutation) so line-by-line review becomes optional. Use when the user explicitly asks for high-assurance or evidence-first work ("reliable", "TDD", "prove it works", "I won't read the code"), or when the change touches high-stakes domains (money, auth, data loss, concurrency, public API). For routine changes where the user just wants normal tests, write good tests directly instead of invoking this loop.
Step-by-step debugging workflow: reproduce the bug, isolate the failing component, trace to root cause, apply a targeted fix, and verify the fix resolves the issue without regressions. Use when you encounter a bug, error, exception, crash, or unexpected behavior that needs troubleshooting.
three.js math library: Vector2/3/4, Matrix3/4, Quaternion, Euler, Color, Box2/Box3, Sphere, Plane, Ray, Line3, Triangle, Frustum, Cylindrical/Spherical coords, MathUtils, and Interpolant base classes; addon math utilities such as OBB, Octree, Capsule, ConvexHull, MeshSurfaceSampler. Use for transforms, intersection tests, and spatial queries; for keyframe interpolation tied to AnimationMixer use threejs-animation; for picking implementation use threejs-objects with Raycaster.
Use a consultative, modular, step-by-step approach to add or configure only the Maven plugins you need in pom.xml. Covers quality tools (enforcer, surefire, failsafe, jacoco, pitest, spotbugs, pmd), security scanning (OWASP), code formatting (Spotless), version management, container image builds (Jib), build information tracking, and benchmarking (JMH). Trigger for requests to add or improve Maven plugins in pom.xml, configure Maven quality plugins, add Maven build lifecycle plugins for Java verification, or review Maven plugin versions and executions. Part of Plinth Toolkit
Create and maintain Architecture Decision Records (ADRs) optimized for agentic coding workflows. Use when you need to propose, write, update, accept/reject, deprecate, or supersede an ADR; bootstrap an adr folder and index; consult existing ADRs before implementing changes; or enforce ADR conventions. This skill uses Socratic questioning to capture intent before drafting, and validates output against an agent-readiness checklist.
Custom allocator skill for memory allocation strategies. Use when implementing pool/slab/arena allocators, tuning jemalloc/mimalloc, writing Rust GlobalAlloc, or benchmarking allocator performance. Activates on queries about jemalloc, mimalloc, tcmalloc, arena allocator, GlobalAlloc, or fragmentation.
Project development lifecycle management with a complexity-tiered three-phase workflow (investigate, proposal, implement; trivial changes take a fast path, everything else waits for approval), file-based plan tracking in docs/plan/, task tracking in docs/task/, and claim-before-work multi-agent coordination. Use when handling feature development, bug fixes, refactors, planning, progress tracking, or multi-agent execution in an existing codebase. English-first for repository docs and remote-visible metadata; use Chinese docs only when the user explicitly requests a specific document in Chinese
Debug and visualization helpers in three.js Core Helpers (AxesHelper, GridHelper, CameraHelper, light helpers, SkeletonHelper, bounding box helpers, PlaneHelper, PolarGridHelper, ArrowHelper) and Addons Helpers (VertexNormalsHelper, VertexTangentsHelper, RectAreaLightHelper, LightProbeHelper, ViewHelper, OctreeHelper, TextureHelper, PositionalAudioHelper, AnimationPathHelper, RapierHelper). Use only for development and editor overlays—not for shipping art; for gizmo-style manipulation use threejs-controls
WebXR integration for three.js: WebXRManager and XRManager on the renderer, session initialization patterns, VRButton and ARButton helpers, XRControllerModelFactory and hand model families, XREstimatedLight, XRPlanes, and related addon Webxr utilities. Use for immersive sessions and controller/hand tracking—not for standard desktop camera projection (threejs-camera) or composer post effects (threejs-postprocessing).
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.