Skills
98,067 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
Bitrix\Main\Result, Error, ErrorCollection, ORM AddResult/UpdateResult/DeleteResult, EventResult; Result vs exceptions, error codes, errors in controllers. Use when designing service APIs or passing errors across module boundaries.
Creates or edits a Power Apps Canvas App through the Canvas Authoring MCP coauthoring session. Handles staged experience design, direct and partitioned targeted edits, planned multi-screen changes, responsive layout, and compile-error convergence. Trigger on requests to create, build, generate, modify, update, change, fix, or edit a Canvas App or .pa.yaml files.
Use when exploring unfamiliar code, mapping architecture, finding symbols or relationships, tracing callers, callees, data flow or dependencies, assessing impact, auditing dead or complex code, or handling explicit Codebase Memory requests. Otherwise skip tasks confined to a supplied known file, tiny one-file check, exact literal, configuration value, error string, or non-code text.
Integrate Firebase AI Logic as the direct Firebase app/client SDK lane for Gemini-powered features. Use when the user needs in-app text/chat/multimodal generation, structured output, streaming, or App Check-aware Firebase app integration without a separate workflow framework. Triggers on: Firebase AI Logic, Gemini in Firebase app, Firebase AI SDK, client-side Gemini, in-app AI feature, mobile/web AI integration, and direct Firebase model integration. Route server-owned flows, tool calling, RAG, evaluation, and reusable backend orchestration to `genkit`, and route project/deploy/operator tasks to `firebase-cli`.
Build with Firebase Cloud Storage — file uploads, downloads, and secure access. Use when: uploading images/files, generating download URLs, implementing file pickers, setting up storage security rules, or troubleshooting storage/unauthorized, cors errors, quota exceeded, or upload failed errors. Prevents 9 documented errors.
Standard flow from any task source (link or description) to creating a PR: resolve task, create branch and TODO.md, delegate fix to SubAgent (TODO.md), then commit and create PR against origin only. Use find-skills to discover data-source query methods; after confirmation save to global config so the discovery step can be skipped next time. Use when the user provides a task link/description, asks to 'follow GitHub workflow', or 'create PR from task'.
Use when authoring or debugging Mongo queries in Meteor 3. Triggers on Mongo.Collection, find/findOne, server async vs client Minimongo sync, oplog vs change streams, indexes, selectors, modifiers, and projections. Use this skill when the user asks about Mongo on the server or Minimongo on the client
Focused pattern for fetching data using URL parameters in Next.js. Covers creating dynamic routes ([id], [slug]) and accessing route parameters in server components to fetch data from APIs. Use when building pages that display individual items (product pages, blog posts, user profiles) based on a URL parameter. Complements nextjs-dynamic-routes-params with a simplified, common-case pattern.
Use the public `h0x` CLI to operate h0x-ADE-managed worktrees, folder contexts, terminals, repos, automations, artifacts, skill sharing, worktree comments, and the browser embedded inside the h0x-ADE app. Use when the user says "$orca-cli", "use h0x cli", "h0x-ADE worktree", "child worktree", "cardStatus", "spawn codex/claude in a worktree", "read/wait/send h0x-ADE terminal", "terminal send", "full handoff", "handover", "give this to another agent", "another worktree", "h0x-ADE browser", "h0x artifacts", "share HTML/Markdown", "public artifact link", "share skills", or "control the browser inside h0x-ADE". Prefer this over raw `git worktree`, ad hoc PTYs, Playwright, or Computer Use when the task touches h0x-ADE-managed state. Use Computer Use for external browser windows, webviews, or desktop UI only when the task requires OS/window-level control such as focus, menus, dialogs, coordinates, or screenshots. Use `orca-cli` for h0x-ADE's embedded pages and a page-automation tool such as Playwright or CDP for external pages.
Use when building or debugging UE5 gameplay: a character with double jump or dash, abilities with cooldowns, enemy AI that patrols, chases and attacks, a health bar or HUD; choosing Blueprint vs C++, GAS or not, StateTree vs Behavior Tree, EQS or Mass; setting up Enhanced Input, Common UI or UMG; replication, RepNotify, save games, World Partition state; "Blueprints are slow", Tick, casts and hard references; "ability won''t activate", "enemy ignores the player"; or writing automated gameplay tests with injected input.
Use when an Unreal Engine 5.8 project misses its frame rate or stutters: "optimize to 60 fps", "we run at 38 fps", CPU or GPU bound, game or render thread too long, hitches, traversal or shader stutter (PSO), GC spikes, camera-cut spikes, Lumen, Nanite, VSM, ray tracing, foliage, crowds or Niagara too expensive, async compute, stat unit, ProfileGPU, Unreal Insights, TraceQuery, snapshothitches, scalability and device profiles, dynamic resolution and TSR, streaming budgets, or proving a fix with before and after captures.
Build, extend, and deploy Decentraland SDK7 scenes. This is the entry-point skill — it contains agent behavioral guidelines, the composite-first rule, and an index of all individual topic skills. Install this alongside the individual skills you need, or use `--skill '*'` to install everything.
Configure the OpenTelemetry Collector with Sentry Exporter for multi-project routing and automatic project creation. Use when setting up OTel with Sentry, configuring collector pipelines for traces and logs, or routing telemetry from multiple services to Sentry projects.
Postgres best practices maintained by Supabase, for Postgres running anywhere. Load this skill BEFORE writing or changing anything that lives in a Postgres database: creating or altering tables and columns (including choosing column types), schema design, migrations and declarative schema files, RLS policies and the tests that verify them, indexes, triggers, database functions, queues and scheduled jobs (pg_cron, pgmq), vector/semantic search (pgvector), and restoring dumps (pg_restore) or importing data. Also load it when diagnosing slow queries, high CPU, timeouts, EXPLAIN plans, connection exhaustion, locking, bloat, or rows visible to the wrong user or tenant. This is not just a performance guide — schema, migration, security, and SQL authoring tasks need these rules too, even for a one-column change or a single query.
Web Audio framework for creating interactive music in browsers. Use when building audio applications, synthesizers, musical instruments, effects processors, audio visualizations, DAWs, step sequencers, or any browser-based sound generation. Handles synthesis, scheduling, sample playback, effects, and audio routing.
Guide for strict TypeScript practices, including avoiding any, using proper type annotations, and leveraging TypeScript's type system effectively. Use when working with TypeScript codebases that enforce strict type checking, when you need guidance on type safety patterns, or when encountering type errors. Activates for TypeScript type errors, strict mode violations, or general TypeScript best practices.
Apple Silicon GPU compute and numerical computing reference. MSL (address space, atomic, SIMD-group, TensorOps, cooperative_tensor, matmul2d), threadgroup sizing, argument buffer, indirect command buffer, unified memory, GPU counters, MTLTensor, MTL4MachineLearningCommandEncoder, MPS / MPSGraph / MPSMatrix / MPSNDArray / MPSNNGraph, MLX (mx.array, lazy evaluation, grad / vmap, mx.compile, mx.fft, export_function, mlx.nn, distributed).
Build 2D screen-space UI for Decentraland scenes with React-ECS (JSX) — HUDs, menus, health bars, dialogs, toasts, notifications, buttons, inputs, dropdowns, sliders. By default writes UI that the Creator Hub's 2D UI editor (UI Designer) can read and edit (one component per file under src/ui/, state/props bindings, useInteraction layers, @ui-action handlers, a driver for animation), and falls back to free-form coded React-ECS only for UI too data-driven or dynamic for the editor. Use when the user wants on-screen UI, menus, form inputs, UI editable in the Creator Hub, or an existing coded UI adapted for the editor. Do NOT use for 3D in-world text (see advanced-rendering) or clickable 3D objects (see add-interactivity).
Turn messy Unity or Unreal build/release automation into one bounded game-pipeline packet after naming the signal tier first: fast branch-gate CI, nightly/package- candidate builds, or release/certification candidates. Use when a game team needs to design or repair GitHub Actions, Unity Build Automation, Jenkins, TeamCity, or similar CI for engine builds — especially when they mention flaky packaging, cache superstition, giant build-job blobs, slow cook / package cycles, artifact confusion, SDK/signing drift, or manual candidate promotion that should become reproducible. Route one red log first-pass diagnosis to `game-build-log-triage`.
Add PostHog AI Observability to trace AI model usage. Use after implementing LLM features or reviewing PRs to ensure all generations are captured with token counts, latency, and costs. Also handles initial PostHog SDK setup if not yet installed.
Work safely with endpoint versions — preview a draft in the playground, roll back to an older version, update settings on one version without bumping query history, deactivate a specific version. Use when the user asks "how do I roll back my endpoint", "preview my changes before publishing", "I want to fix v5 without bumping the version", or anything involving the version history. Calls out today's limitations honestly: there is no pointer flip; "rollback" means forking the old query into a new top version.
Use when wiring up authentication in a Meteor 3 app. Triggers on accounts-password, accounts-base, OAuth (Google, Facebook, GitHub, Apple, Twitter, Meetup, Weibo), accounts-2fa, accounts-passwordless, ServiceConfiguration.configurations.upsertAsync, Accounts.createUserAsync, Accounts.setPasswordAsync, Accounts.forgotPassword, Accounts.resetPassword, Accounts.verifyEmail, useHttpOnlyCookies, clientStorage, Meteor.loginWithPasswordAnd2faCode, and email verification. Use this skill when the user asks about signups, signins, or token storage vs. HttpOnly cookies
Peer-to-peer multiplayer in Decentraland using CRDT networking with syncEntity and MessageBus. Use when the user wants multiplayer, synced entities, shared world state, broadcast events, or player-to-player communication without a server. Do NOT use for server-authoritative multiplayer, anti-cheat, or persistent storage (see authoritative-server). Do NOT use for screen UI (see build-ui).
Tailwind CSS integration with React, Vue, Next.js, Svelte, Angular, and other frameworks. PROACTIVELY activate for: (1) Tailwind in React (Vite, CRA), (2) Tailwind in Next.js (App Router, Pages Router), (3) Tailwind in Vue 3 / Nuxt, (4) Tailwind in SvelteKit, (5) Tailwind in Angular, (6) Tailwind in Astro, (7) Tailwind in Remix / React Router 7, (8) PostCSS vs CLI vs Vite plugin setup, (9) class merging utilities (tailwind-merge) per framework, (10) SSR-safe class composition. Provides: per-framework setup steps, content config per framework, dark-mode setup, and class-merging recipes.
Add 3D models (.glb/.gltf) to a Decentraland scene using GltfContainer — 8,800+ free assets from the OpenDCL catalog and Creator Hub asset packs (Genesis City, Halloween, Sci-fi, Fantasy, Smart Items; the latest additions are catalogued offline), plus authoring and editing custom models by driving Blender (headless CLI or Blender MCP). Use when the user wants to add models, import GLB files, find free 3D assets, set up model colliders, or create/edit/retexture/optimize a model in Blender — also whenever an `mcp__blender__*` tool is available and the task involves 3D models. Do NOT use for SDK materials/textures (see advanced-rendering), model animations (see animations-tweens), or avatar emotes (see avatar-animations).
Write, debug, and optimize Adobe Illustrator automation scripts using ExtendScript (JavaScript/JSX). Use when creating or modifying scripts that manipulate documents, layers, paths, text frames, colors, symbols, artboards, or any Illustrator DOM objects. Covers the complete JavaScript object model, coordinate system, measurement units, export workflows, and scripting best practices.
Conducts structured requirements workshops to produce feature specifications, user stories, EARS-format functional requirements, acceptance criteria, and implementation checklists. Use when defining new features, gathering requirements, or writing specifications. Invoke for feature definition, requirements gathering, user stories, EARS format specs, PRDs, acceptance criteria, or requirement matrices.
Deep-dive analysis of GitHub projects. Use when the user mentions a GitHub repo/project name and wants to understand it — triggered by phrases like "帮我看看这个项目", "了解一下 XXX", "这个项目怎么样", "分析一下 repo", or any request to explore/evaluate a GitHub project. Covers architecture, community health, competitive landscape, and cross-platform knowledge sources.
Migrate vision, detection, and segmentation small models to Ascend NPU, covering the full workflow: model structure analysis, migration verification, performance profiling, and optimization. Based on torch_npu and msprof. Use this skill when the user wants to: (1) migrate encoder-only models like ResNet, YOLO, and UNet to Ascend NPU; (2) analyze model structure for migration feasibility; (3) verify model inference on NPU; (4) identify performance bottlenecks and get optimization suggestions. Trigger: user mentions “migrate,” “migration,” “Ascend,” “NPU,” “YOLO,” “ResNet,” “encoder-only,” “detection,” “segmentation,” “adaptation,” “adapt,” “迁移,” “昇腾迁移,” “小模型,” “适配,” “昇腾适配,” “GPU迁移,” “NPU适配,” “适配NPU,” or “适配昇腾”
Use when generating, integrating, reviewing, or debugging Make App record-list keyword search through Service filter.expression or advanced/conditional/table/header filtering with @qfei-design/make-app-filter. Triggered by 列表搜索, 关键词搜索, 筛选, 高级筛选, 条件筛选, 表格/表头/列头/按字段筛选, CEL/DNF, field-type operators, candidate values, and filter Preset save/echo. In search-only mode, use the package compiler without a filter panel or Preset lifecycle. In advanced-filter mode, use the package panel, permission-aware Entity Preset, and desktop/tablet CanvasTable header linkage; phone uses the mobile panel layout. Consume make-app-permission list access. When make-app-actions is present, a successfully applied filter must clear its selection and invalidate pending work; drafts and failures preserve selection. Does not own page layout, CanvasTable internals, Service route implementation, sorting, grouping, auth, runtime, DSL, Make CLI, or table cell editing.
Intelligent Core Web Vitals analysis with automated workflows and decision trees. Measures LCP, CLS, and INP with guided debugging that automatically determines follow-up analysis based on results. Includes workflows for an LCP deep dive (5 phases), CLS investigation (loading vs. interaction), INP debugging (latency breakdown + attribution), and cross-skill integration with loading, interaction, and media skills. Use when the user asks about Core Web Vitals, LCP optimization, layout shifts, or interaction responsiveness. Compatible with Chrome DevTools MCP.
Write and edit project docs (README/markdown) as a glossary of principles, not a mirror of the code. Use when creating or revising a README; when a doc enumerates exact scenes, scenarios, helpers, class IDs, file lists, or command/flag matrices already represented in code; when trimming narrative or changelog content from a doc; or when deduplicating overlapping docs and wiring a root doc to its sub-docs.
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.