Skills
97,725 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
Use this skill when the user asks to "build a frontend", "create a landing page", "add shadcn components", "install shadcn blocks", "set up shadcn", "add a hero section", "add pricing section", "build a UI with Tailwind", "use shadcnblocks", "add UI blocks", "add a contact form", "build a dashboard", "create an ecommerce page", "add a navbar", "add a footer", or is building any frontend that could leverage shadcn/ui components and Tailwind CSS. It provides knowledge of 1,338 premium blocks and 1,189 free components from ShadcnBlocks, enabling intelligent selection and installation of the right UI elements for any frontend task.
Research and advise on the best way to approach a software project, including architecture, tech stack, implementation strategy, pricing/operating-cost tradeoffs, benchmark research, and comparisons with similar real-world projects. Use before building, mid-build, or after completion when the user asks for project strategy, optimal approach, research comparables, similar projects, stack selection, vendor/service choice, repo analysis, architecture critique, implementation feedback, or a prioritized improvement plan. Avoid for narrow single-bug debugging or isolated file edits unless the user asks for broader project direction
Use when protecting FastAPI endpoints with JWT Bearer token validation, scope checks, or DPoP binding. Integrates auth0-fastapi-api for stateless APIs receiving access tokens — use even if the user says "secure my FastAPI endpoints" or "validate tokens in FastAPI".
Expert Bash/shell scripting across environments where Bash is available (Linux, macOS, Git Bash on Windows, WSL, containers). This is a Bash-focused skill — it does not provide PowerShell parity; on Windows the target is the Bash interpreter (Git Bash / WSL), not native PowerShell. PROACTIVELY activate for: (1) ANY Bash/shell script task, (2) System automation, (3) DevOps/CI/CD scripts, (4) Build/deployment automation, (5) Script review/debugging, (6) Converting commands to scripts. Provides: Google Shell Style Guide compliance, ShellCheck validation, Bash portability across Linux/macOS/WSL/Git Bash/containers, POSIX compliance, security hardening, error handling, performance optimization, testing with BATS, and production-ready patterns. Ensures professional-grade, secure, portable Bash scripts every time
Autonomously optimize code for performance using CodSpeed benchmarks, flamegraph analysis, and iterative improvement. Use this skill whenever the user wants to make code faster, reduce CPU usage, optimize memory, improve throughput, find performance bottlenecks, or asks to 'optimize', 'speed up', 'make faster', 'reduce latency', 'improve performance', or points at a CodSpeed benchmark result wanting improvements. Also trigger when the user mentions a slow function, a regression, or wants to understand where time is spent in their code
Implement, review, or improve maps and location features in iOS/macOS apps using MapKit and CoreLocation. Use when working with Map views, annotations, markers, polylines, user location tracking, geocoding, reverse geocoding, search/autocomplete, directions and routes, geofencing, region monitoring, CLLocationUpdate async streams, or location authorization flows. Also use when working with maps, coordinates, addresses, places, directions, distance calculations, or location-based features in Swift apps.
Triage and fix one microsoft/playwright issue, or do a maintainer's task, unattended inside the Issue triage GitHub Actions workflow (.github/workflows/triage.yml), which a needs-triage, needs-triage-mac or needs-triage-win label starts, or a maintainer starts by hand with an issue, a task or both. Reproduces the issue on the runner, then leaves a verified fix proposal for the workflow to open as a draft PR, or an investigation note for it to post on the issue. Only for that workflow.
Serves LLMs with high throughput using vLLM's PagedAttention and continuous batching. Use when deploying production LLM APIs, optimizing inference latency/throughput, or serving models with limited GPU memory. Supports OpenAI-compatible endpoints, quantization (GPTQ/AWQ/FP8), and tensor parallelism
Explores a Spring Boot application and builds primary context: tech stack, module structure, domain entities, REST endpoints. Triggers on explicit requests: "explore project", "describe project", "project overview", "what is this project", "project structure", "tech stack", "give me context about the project", or whenever you need to understand the project before starting any task.
Classify and wire Remotion Studio config options as either startup-fixed or reloadable while preventing mixed lifecycle behavior across consumers. Use when adding, changing, or reviewing a Config setter or CLI option consumed by Studio, its preview server, compiler, HTML bootstrap, public-folder watcher, or render queue.
Senior graphics programmer specializing in Three.js, WebGL, shaders, and performance optimization. Use when "three.js, threejs, webgl, 3d web, 3d graphics, shaders, glsl, 3d scene, 3d animation, threejs, webgl, 3d-graphics, shaders, animation, interactive, web-graphics" are mentioned.
Evaluate and improve code modularization using the Balanced Coupling Model. Analyzes coupling strength, connascence types, and distance to identify refactoring opportunities and architectural improvements. Use when reviewing code architecture, refactoring modules, or designing new systems.
Rust eBPF skill using the Aya framework. Use when writing eBPF programs in Rust with aya-bpf and aya-log, defining BPF map types, integrating with tokio userspace, sharing maps between kernel and userspace, or debugging Aya compilation and loading errors. Activates on queries about Aya, aya-bpf, Rust eBPF, aya-log, eBPF in Rust, or BPF programs with tokio
Guide users through obtaining and configuring free API keys for LLM providers. Use when the user wants to set up a free LLM API, get a free API key, connect to a free model provider, configure an OpenAI-compatible endpoint at no cost, or asks about free tiers for AI models. Triggers on "free API key", "free LLM", "set up Gemini/Groq/Mistral/etc.", "which free provider", "how to get an API key", "free model access", "configure LLM for free".
Expert patterns for combat systems including hitbox/hurtbox architecture, damage calculation (DamageData class), health components, combat state machines, combo systems, ability cooldowns, and damage popups. Use for action games, RPGs, or fighting games. Trigger keywords: Hitbox, Hurtbox, DamageData, HealthComponent, combat_state, combo_system, ability_cooldown, invincibility_frames, damage_popup.
Expert blueprint for Godot 4 project organization (feature-based folders, naming conventions, version control). Enforces snake_case files, PascalCase nodes, %SceneUniqueNames, and .gitignore best practices. Use when starting new projects or refactoring structure. Keywords project organization, naming conventions, snake_case, PascalCase, feature-based, .gitignore, .gdignore
Expert blueprint for data-oriented design using Resource/RefCounted classes (item databases, character stats, reusable data structures). Covers typed arrays, serialization, nested resources, and resource caching. Use when implementing data systems OR inventory/stats/dialogue databases. Keywords Resource, RefCounted, ItemData, CharacterStats, database, serialization, @export, typed arrays
Expert blueprint for TileMapLayer and TileSet systems for efficient 2D level design. Covers terrain autotiling, physics layers, custom data, navigation integration, and runtime manipulation. Use when building grid-based levels OR implementing destructible tiles. Keywords TileMapLayer, TileSet, terrain, autotiling, atlas, physics layer, custom data.
Data framework for building LLM applications with RAG. Specializes in document ingestion (300+ connectors), indexing, and querying. Features vector indices, query engines, agents, and multi-modal support. Use for document Q&A, chatbots, knowledge retrieval, or building RAG pipelines. Best for data-centric LLM applications.
Author step content for Novu workflows defined in the Dashboard or generated/edited via the Novu MCP. Use when filling in step controls (subject, body, editorType, headers, body, conditions) for email, in-app, sms, push, chat, delay, digest, throttle, or HTTP Request steps.
Drive RevenueCat from the terminal with the `rc` CLI, an alternative to the RevenueCat MCP server for humans, CI, and agents. Covers install, authentication, command discovery, and output conventions. Use for uploading paywall images to the Media Gallery (`rc media-assets upload`) or custom paywall fonts (`rc fonts upload`) — MCP has no upload tools for these. Referenced by the other RevenueCat skills whenever they offer a CLI path.
Build enterprise Spring Boot applications with annotations, dependency injection, data persistence, REST controllers, and security. Use when developing Spring applications, managing beans, implementing services, and configuring Spring Boot projects
Creates a Spring Security configuration class with authentication, authorization, and HTTP protection setup. Use this skill when a security configuration needs to be created, either standalone or as part of a larger task (e.g. adding authentication to a REST API, configuring OAuth2/OIDC login, setting up JWT resource server).
Zig testing skill for writing and running tests. Use when using zig build test, writing comptime tests, using test filters, working with test allocators to detect leaks, or using Zig's built-in fuzz testing (0.14+). Activates on queries about Zig tests, zig test, zig build test, comptime testing, test allocators, Zig fuzz testing, or detecting memory leaks in Zig tests.
Bazel build system skill for C/C++ projects. Use when writing BUILD files with cc_library and cc_binary rules, registering toolchains, configuring remote execution, debugging sandbox issues, using query and cquery for dependency graphs, or migrating from CMake to Bazel. Activates on queries about Bazel, BUILD files, cc_library, cc_binary, Bzlmod, bazel query, remote execution, or Bazel toolchain registration.
FastAPI Best Architecture (fba) project development guide. Use when working in fba projects to design, implement, review, or document APIs, Schema, Service, CRUD, Model, configuration, response contracts, pagination, cache, Celery, i18n, coding style, plugin development, plugin README files, plugin sharing, plugin publishing, or plugin marketplace updates.
Reviews, writes, and refactors ReactLynx code and component libraries for Lynx dual-thread best practices. Applies when writing ReactLynx components, or handling background-only, useLayoutEffect, bindtap/catchtap, main-thread:*, runOnMainThread/runOnBackground, lazy/Suspense, globalPropsMode/__globalProps, component-library publishing (preserved JSX vs React.createElement), or render/diff/commit performance traces. Excludes vanilla Lynx Element PAPI without ReactLynx JSX (use vanilla-lynx), running-app debugging via DevTool/CDP (use lynx-devtool), or Rspeedy/tsconfig config (use lynx-typescript).
Install, compose, and adapt shadcn/ui with registry, Base UI, Radix, React Aria, theming, forms, tables, charts, sidebars, and accessible components. Use when components.json, existing integrated shadcn components, or an explicit request for shadcn is present; always treat copied code as project code, never as an opaque dependency. Don’t use for the token/utility system itself—pair with the Tailwind CSS skill—or for an alternative component gallery, covered by react-ui-components
Coordinates cross-platform weapp-tailwindcss tasks and provides the current security baseline. Use when the user asks generally about weapp-tailwindcss, Tailwind CSS in mini-programs, Web CLI, React Native, or ReactLynx, or has not yet specified whether they need integration, migration, troubleshooting, runtime, custom builds, or native cross-platform integration. Route specific tasks to the corresponding dedicated skill first.
Use when you need to review, improve, or write Java unit tests — including migrating from JUnit 4 to JUnit 5, adopting AssertJ for fluent assertions, structuring tests with Given-When-Then, ensuring test independence, applying parameterized tests, mocking dependencies with Mockito, verifying boundary conditions (RIGHT-BICEP, CORRECT, A-TRIP), leveraging JSpecify null-safety annotations, or eliminating testing anti-patterns such as reflection-based tests or shared mutable state. This should trigger for requests such as Review Java code for unit tests; Apply best practices for unit tests in Java code; Write fast JUnit unit tests for Java code; Improve Mockito-based Java unit tests; Refactor Java tests to isolate collaborators. Part of Plinth Toolkit
Draw a software architecture, system, data-model or call-flow diagram as D2 text laid out by TALA (D2's whiteboard-style engine, open source since D2 0.9), look at it in the terminal before anyone opens an image, and check that the picture says what it claims — `d2 --layout=tala x.d2 x.txt` renders the layout as Unicode box drawing, `--ascii-mode standard` as plain ASCII for a README, and `assets/d2-facts.mjs` reads the drawn boxes and arrows back out of the render and holds them to a fact sheet. Loop: write `.d2` → `d2 fmt --check` / `validate` → facts → terminal render → PNG → fix the text. Use when asked for a D2 diagram, an architecture diagram kept as editable text in the repo, a TALA layout, a diagram that shows in a terminal or a code block, or when the repo already has `.d2` files. Not for animations or figures with a moving walk (`explanatory-animation`, `explain-with-anim`).
Baseline C# skill loaded for every .NET code path. Guides language patterns (records, pattern matching, primary constructors, C# 8-15), coding standards, async/await, DI, LINQ, serialization, domain modeling, concurrency, Roslyn analyzers, globalization, native interop (P/Invoke, LibraryImport, ComWrappers), WASM interop (JSImport/JSExport), and type design. Spans 25 topics. Do not use for ASP.NET endpoint architecture, UI framework patterns, or CI/CD guidance.
Expert patterns for Godot AutoLoad (singleton) architecture including global state management, scene transitions, signal-based communication, dependency injection, autoload initialization order, and anti-patterns to avoid. Use for game managers, save systems, audio controllers, or cross-scene resources. Trigger keywords: AutoLoad, singleton, GameManager, SceneTransitioner, SaveManager, global_state, autoload_order, signal_bus, dependency_injection.
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.