Skills
97,501 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
Build with Aurora DSQL — manage schemas, execute queries, handle migrations, diagnose query plans, load data, and develop applications with a serverless, distributed SQL database. Covers IAM auth, multi-tenant patterns, MySQL-to-DSQL and PostgreSQL-to-DSQL schema conversion, FK replacement code generation, OCC retry patterns, ORM migration (Django/Hibernate/Rails), DDL operations, query plan explainability, SQL compatibility validation, and bulk data loading. Triggers on phrases like: DSQL, Aurora DSQL, distributed SQL database, serverless PostgreSQL-compatible database, migrate to DSQL, DSQL query plan, DSQL EXPLAIN ANALYZE, DSQL ENUM, DSQL foreign key, DSQL OCC retry, DSQL multi-region, DSQL JSONB, DSQL GIN index, load into DSQL, load CSV into DSQL, bulk load DSQL, aurora-dsql-loader.
Calibrated interrogation of a fuzzy idea before it becomes a spec. Asks one question at a time, recommends an answer, and lands each answer in §G (goal) or §C (constraints) — unknowns parked as `?` items, never guessed. The cheapest place to kill a bad idea is before §T exists. Triggers when the user has a vague idea, says "grill me", "stress-test this", "challenge my plan", "interview me before I spec", or invokes /ck:grill. Defers the actual write to the spec skill.
Write, review, and rewrite Django migrations for PostgreSQL with zero-downtime guarantees. Use this skill whenever the user mentions migrations, Django schema changes, or deployment safety — even if they don't say "zero downtime" explicitly. Trigger on: "review this migration", "is this migration safe?", "write a migration for...", "rewrite this migration", "how do I add a NOT NULL column / drop a column / add an index / rename a column / add an FK without downtime", "will this migration cause locks?", "this migration is blocking production". Covers: SeparateDatabaseAndState two-file splits, AddIndexConcurrently, FK NOT VALID + VALIDATE, db_default for NOT NULL columns, lock_timeout, and RunPython safety rules.
This skill should be used when the user says "setup", "deploy to railway", "initialize", "create project", "create service", or wants to deploy from GitHub. Handles initial setup AND adding services to existing projects. For databases, use the database skill instead.
Performs a high-signal senior-engineer PR review of code changes, classifies how critical the changed surfaces are, and decides whether the PR can be self-merged or must go to a human reviewer. Use this skill for pull request reviews, branch diffs, pasted diffs, uncommitted changes, GitHub PR URLs, or requests like "review my changes", "check this PR", "is this ready", "can I merge this", "does this need a reviewer", "how risky is this change", "what could this break", "audit this diff", "sanity check before I push", or "does this look clean". Covers correctness, security, contracts, blast radius, prior failed fixes in the same code path, tests, maintainability, and regressions while aggressively avoiding noisy false positives. When the PR title contains `[CU-<ticket number>]`, reads the ClickUp ticket and verifies the diff builds the feature the ticket describes. Designed to work reliably even with smaller/cheaper models.
Architectural refactoring guide for React applications covering component architecture, state architecture, hook patterns, component decomposition, coupling and cohesion, data flow, and refactoring safety. Use when refactoring React codebases, reviewing PRs for architectural issues, decomposing oversized components, or improving module boundaries. Does NOT cover React 19 API usage (see react skill) or performance optimization (see react-optimise skill).
Build React animations with Motion (Framer Motion) - gestures (drag, hover, tap), scroll effects, spring physics, layout animations, SVG. Bundle: 2.3 KB (mini) to 34 KB (full). Use when: drag-and-drop, scroll animations, modals, carousels, parallax. Troubleshoot: AnimatePresence exit, list performance, Tailwind conflicts, Next.js "use client".
Apply when installing, publishing, upgrading, or rolling back a VTEX IO storefront theme app (`vendor.store-theme` or any app that owns `store/blocks.json`, `store/routes.json`, and `store/contentSchemas.json`). Covers how Site Editor and theme content are scoped by the app's MAJOR version, why a major version bump leaves the new major with no merchant content and silently falls back to default theme content, the safe install-in-workspace, migrate- content with the `updateThemeIds` mutation, smoke-test, then promote workflow, the 3-way mine-wins merge that `vtex workspace promote` performs against `vtex.pages-graphql` VBase (with automatic per-minute `userData_backup` snapshots when conflicts are resolved), and the support-led recovery path. Use for any operation that changes which version of a content-holding app is installed in `master`.
Routes and drives a Capacitor app upgrade across one or more major versions (4 to 9), including the required 8.4 to 8.5 iOS UIScene step before Capacitor 9 and Xcode 27. Detects the current version, plans the hop order (e.g. 6 to 7 to 8 to 8.5 to 9), runs `npx cap migrate` per hop, delegates each hop to its version skill, and verifies native builds between hops. Use for "upgrade Capacitor", "update to the latest Capacitor", "cap migrate", multi-version jumps, or when the target version is unclear. Do not use for plugin library upgrades (use capacitor-plugin-upgrades), Cordova apps (use cordova-to-capacitor), or non-Capacitor frameworks.
Use the Docyrus CLI (`docyrus`) to interact with the Docyrus platform from the terminal. Use when the user asks to authenticate, list apps, query or manage data records (`ds`), manage dev app data source schema objects (`studio`) including data sources, fields, enums, data views, forms, webforms, HTML/PDF export templates, and email templates, manage automations and their triggers/action nodes (`automation`), build or edit custom AI agents and their sub-resources (`agent`), set an app's AI agent context or manage app-scoped AI tools (`apps`), list tenant email accounts and send emails (`messaging`), manage tenant account settings — brands, the current user's profile, and tenant regional/formatting preferences (`account`), discover and call connectors (`connect`), send API requests, switch tenants/accounts, discover tenant OpenAPI specs, drive browser automation (`browser`), chat with platform agents (`docy`), launch the pi cowork/coding agents (`worky`/`cody`/`coder`), run the agent bridge server (`server`), manage the repo knowledge graph (`knowledge`) and project plan (`project-plan`), cut releases (`release`), or use the terminal UI via `docyrus tui`. Triggers on `docyrus ds list`, `docyrus ds comments`, `docyrus ds files upload`, `docyrus studio`, `docyrus studio search-fields`, `docyrus automation`, `docyrus automation create-node`, `docyrus agent`, `docyrus apps create`, `docyrus apps set-agent-context`, `docyrus apps ai-tools`, `docyrus messaging email send`, `docyrus account brands`, `docyrus account user-profile`, `docyrus account tenant-preferences`, `docyrus connect`, `docyrus discover`, `docyrus auth`, `docyrus browser`, `docyrus knowledge`, `docyrus project-plan`, `docyrus release`, `docyrus server`, `docyrus tui`, or any terminal-based Docyrus workflow.
Implement, configure, and customize the Syncfusion React Gantt Chart component. Use when building project scheduling applications with task timelines, dependencies, resource management, and calendar-driven scheduling. Covers GanttComponent setup, task constraints, taskbar customization, filtering, sorting, Excel/PDF export, critical path analysis, milestones, predecessors, resource view, baseline tracking, and task calendar configuration.
Turns a codebase into EventCatalog documentation through an evidence-based interview. Scans the code first, proposes an architectural model (domains, systems, services, agents, messages, channels, data stores), grills the user on the structural decisions, produces a reviewable plan file, then hands off to catalog-documentation-creator. Use when user says “document my codebase in EventCatalog”, “turn this repo into a catalog”, “model my code as a catalog”, “document my agents”, “document my AI agents”, “grill me on my architecture”, “update my catalog from the code”, “reconcile my catalog with my code”, or “I don't know where to start documenting this codebase”. Works for brand-new catalogs AND for updating existing catalogs that have drifted from the code.
Migrates an Apache Cordova, PhoneGap, or Ionic-Cordova app to Capacitor. Use when the project has config.xml, a platforms/ or plugins/ folder, cordova-* or phonegap-* dependencies, @awesome-cordova-plugins or @ionic-native wrappers, deviceready listeners, or cordova.plugins.* calls, and the user wants Capacitor native projects, Capacitor/Capgo plugin replacements, config.xml preference migration, and preserved localStorage/IndexedDB data (iosScheme/androidScheme). Covers keeping Cordova plugins temporarily, Capacitor 9 making the Cordova runtime optional (CapacitorCordova only bundled when a Cordova plugin is installed), skipped incompatible plugins, and removing Cordova afterwards. Do not use for porting a single Cordova plugin's native source into a Capacitor plugin, Capacitor major upgrades (capacitor-app-upgrades), Appflow/cordova-plugin-ionic live updates (ionic-appflow-migration), or non-Cordova web apps (webapp-to-capacitor, framework-to-capacitor).
Complete toolkit for programmatic video creation with Remotion + React. Covers animations, timing, rendering (CLI/Node.js/Lambda/Cloud Run), captions, 3D, charts, text effects, transitions, and media handling. Use when writing Remotion code, building video generation pipelines, or creating data-driven video templates.
Send messages via Twilio's Programmable Messaging API across all channels — SMS, MMS, RCS, and WhatsApp. Covers text messages, media, rich content (cards, carousels, buttons), template-based sends, Messaging Services, status callbacks, and WhatsApp's 24-hour service window. Use when the user wants to send a message — whether they say "send SMS", "text message", "branded message", "rich message", "WhatsApp message", "RCS message", "notification", or "alert". For picking the right channel for a use case, first consult twilio-messaging-channel-advisor.
Reverse-engineer any codebase into a complete Product Requirements Document (PRD). Analyzes routes, components, state management, API integrations, and user interactions to produce business-readable documentation detailed enough for engineers or AI agents to fully reconstruct every page and endpoint. Works with frontend frameworks (React, Vue, Angular, Svelte, Next.js, Nuxt), backend frameworks (NestJS, Django, Express, FastAPI), and fullstack applications. Use when users mention: generate PRD, reverse-engineer requirements, code to documentation, extract product specs from code, document page logic, analyze page fields and interactions, create a functional inventory, write requirements from an existing codebase, document API endpoints, or analyze backend routes.
Linux perf profiler skill for CPU performance analysis. Use when collecting sampling profiles with perf record, generating perf report, measuring hardware counters (cache misses, branch mispredicts, IPC), identifying hot functions, or feeding perf data into flamegraph tools. Activates on queries about perf, Linux performance counters, PMU events, off-CPU profiling, perf stat, perf annotate, or sampling-based profiling on Linux
Gather external knowledge the spec needs and distill it into §R — the durable research log — so build grounds in facts instead of hallucinating library behavior. Each finding cites a source; unsourced claims are flagged, never written as fact. Triggers when a spec decision hinges on a library/API/best practice the agent is unsure of, when the user says "research this", "what's the best lib for…", "check current best practice", or invokes /ck:research. Defers the §R write to the spec skill.
Complete onboarding guide for developers who are new to Detour, the open-source deferred deep linking SDK by Software Mansion. Use this skill whenever a user asks what Detour is, how to get started with Detour, how to set up deep linking with Detour, how to install the Detour SDK, how to configure the Detour dashboard, or how deferred deep linking works. Also use it when the user has no prior deep linking setup and wants to add deep links to their app. Covers everything from zero to production: account setup, dashboard configuration, Universal Links and App Links, platform SDK integration for React Native, iOS, Android, and Flutter, analytics, and architecture.
Implement internationalization with Lingui in React and JavaScript applications. Use when adding i18n, translating UI, working with Trans/useLingui/Plural, extracting messages, compiling catalogs, or when the user mentions Lingui, internationalization, i18n, translations, locales, message extraction, ICU MessageFormat, or working with .po files.
Use this skill when the user asks to bypass bot detection, avoid CAPTCHA, use stealth browser automation, run undetected Playwright, bypass a Google bot check, or use rebrowser-playwright, or needs to automate websites that detect and block bots.
Build DeepStream GStreamer pipelines interactively. Use when the user asks about pipelines for video/image inference, detection, tracking, or streaming — including natural phrases like 'pipeline to infer on image', 'run inference on video', 'detect objects in stream', 'save inference output', 'deepstream pipeline', 'gst-launch pipeline', 'process video with detection', 'build a pipeline', or any request involving GStreamer/DeepStream elements (nvinfer, nvstreammux, nvtracker, etc.).
Software Mansion's Fishjam — hosted WebRTC platform for video, audio, one-to-many livestreaming, and compositions. MUST USE before writing, reviewing, or debugging ANY code that talks to a Fishjam instance from a backend (Node, Python) or a client (React web, React Native / Expo). Routes to platform fundamentals and the right SDK sub-skill. Trigger on: 'Fishjam', 'fishjam.io', 'fishjam.swmansion.com', 'fishjam dashboard', 'Fishjam ID', 'management token', 'peer token', 'sandbox API', 'livestream room', '@fishjam-cloud/js-server-sdk', 'fishjam-server-sdk', '@fishjam-cloud/react-client', '@fishjam-cloud/react-native-client', '@fishjam-cloud/ts-client', 'FishjamClient', 'FishjamProvider', 'FishjamNotifier', 'FishjamAgent', 'createPeer', 'createRoom', 'createAgent', 'createLivestreamStreamerToken', 'createMoqToken', 'refreshPeerToken', 'webhook', 'gemini fishjam', 'vapi fishjam', 'fishjam expo plugin', 'Fishjam composition', 'CompositionClient', 'forwardRoomTracks', '@fishjam-cloud/composition'.
Build layouts that adapt to the iPhone Duo fold using reserved regions, division and occlusion regions, displacement patterns, and the split and overlay ArrangementView containers. Use when content or controls land in the fold, when building a split-like or overlay layout, or when custom manually-positioned UI must avoid the hinge or the under-display camera.
MUST be used for Vue.js tasks. Strongly recommends Composition API with `<script setup>` and TypeScript as the standard approach. Covers Vue 3, SSR, Volar, vue-tsc. Load for any Vue, .vue files, Vue Router, Pinia, or Vite with Vue work. ALWAYS use Composition API unless the project explicitly requires Options API.
Break a plan, spec, or the current conversation into a set of tracer-bullet tickets, each declaring its blocking edges, published to the configured tracker (edges as text in one file per ticket locally, or native blocking links on a real tracker).
Comprehensive REST API design review with automated linting, breaking-change detection, and design scorecards. Catches inconsistent conventions, missing versioning, and design smells before APIs ship. Use when reviewing a PR that adds or changes API endpoints, auditing an existing API for v2 migration, or establishing API standards for a team.
Secure environment variable management with Varlock. Use when handling secrets, API keys, credentials, or any sensitive configuration. Ensures secrets are never exposed in terminal, logs, or LLM context. Provides guidance around integrating varlock into a project, reading/editing .env.schema and other .env files, using the varlock CLI, adding plugins and framework integrations. Trigger phrases include "environment variable", "env var", "secrets", ".env", "API key", "credentials", "sensitive", "varlock"
Use the Alchemy CLI (`@alchemy/cli`) for live blockchain data, transaction lookups, NFT/token/portfolio queries, simulation, tracing/debugging, contract reads/writes, wallet-signed sends, swaps and cross-chain bridges, Solana RPC/DAS plus wallet sends, webhook management, and Alchemy app administration. Preferred runtime path for live agent work (querying, admin, local automation) when the CLI is installed locally — or when both CLI and MCP are available. If neither is installed, install the CLI with `npm i -g @alchemy/cli`. Use for live agent work in this session, not for building application code that ships to production. For application code, use the `alchemy-api` skill (with API key) or `agentic-gateway` skill (without).
Advanced theming for Shiny apps using bslib and Bootstrap 5. Use when customizing app appearance with bs_theme(), Bootswatch themes, custom colors, typography, brand.yml integration, Bootstrap Sass variables, custom Sass/CSS rules, dark mode and color modes, dynamic theme switching, real-time theming, theme inspection, or making R plots match the app theme with thematic.
Focused interactive tutor for the Reverse Engineering path in AI Engineering from Scratch. Start or resume this route when a learner wants to read a compiled program: file formats, disassembly, control flow, lifting, evidence, proof, calling conventions, compiler idioms, linking, types, debugging, bytecode, diffing, symbolic execution, and AI-assisted analysis. Teaches one lesson per invocation and records evidence in REVERSE-ENGINEERING-LEARNING.md.
Full PR lifecycle in a fresh task-owned git worktree: implement via the ulw-loop skill with mandatory evidence-bound manual QA → reviewer-readable English PR → verification loop (CI + Cubic, where Cubic is skipped only when its quota is exhausted) → merge by default → worktree cleanup. Decomposes one task into the smallest atomic, independently-mergeable PRs and builds the independent ones concurrently via one worktree per PR driven by parallel subagents or a team. Unbounded loop: any failing gate sends you back to fix-and-re-QA inside that PR's worktree. Use whenever implementation work needs to land as a PR. Triggers: 'create a PR', 'implement and PR', 'work on this and make a PR', 'implement issue', 'land this as a PR', 'split into atomic PRs', 'parallel PRs', 'work-with-pr', 'PR workflow', 'implement end to end', even when user just says 'implement X' if the context implies PR delivery.
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.