Skills
99,448 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.
Use when verifying that requirements/specs/PRDs and their implementation plans match — before starting work, after a spec or plan update, or when suspecting coverage gaps, scope creep, or design drift between intent and action documents. Needs both documents; not for checking code against a spec.
Apply fixes or verify fixes based on a code review report and its development plan. Not for an initial review, changing only a plan, or implementing a plan without review input. Verify fixes one by one, commit as agreed in the plan, and write back dispositions and evidence
Revise a PRD or development plan based on a review report, or recheck the results of revisions. Not for code fixes, implementing a plan, or writing a document from scratch. Verify feedback from review-prd or review-dev-plan, revise according to the selected mode or only re-review, and write back the disposition
Principal backend engineering intelligence for C++ systems and performance-critical services. Actions: plan, design, build, implement, review, fix, optimize, refactor, debug, secure, scale backend code and architectures. Focus: correctness, memory safety, latency, reliability, observability, scalability, operability.
Use when deriving `SystemParam`, grouping with `SystemSet`, gating execution with `.run_if(on_message::<M>)` / `in_state(...)` / `resource_exists::<R>`, combining conditions with `.and_then()` / `.or_else()`, ordering with `.before`/`.after`/`.chain()`/`.chain_weak()`, driving states with `NextState::set_if_different`, or removing systems with `remove_systems_in_set` in Bevy 0.20
SOLUTIONING GATE — validates cohesion across planning artifacts before any implementation begins. Cross-references PRD (or tech-spec), architecture document, and epics/stories for coverage consistency and missing pieces. Returns a verdict of PASS, CONCERNS, or FAIL with specifics. Does NOT touch code. Use when the user says: - "check if we're ready to build" / "are we ready to implement?" - "validate planning" / "gate check" / "readiness check" - "run the solutioning gate" / "check implementation readiness" - "is the architecture complete?" / "do requirements match architecture?" - "sign off on planning" / "planning done, check it" - "validate PRD against architecture" / "cross-reference planning docs" Intents supported: Validate (primary). Track-adaptive: works for Quick Flow (tech-spec + architecture), BMad Method (PRD + architecture + epics), and Enterprise (all of the above + optional security/DevOps addenda).
Trigger this skill immediately when the user says "bootstrap" in any form. Also trigger it for any request about initializing a project's workflow, configuring development practices, or setting up a codebase for the first time. Key signals: "bootstrap", "set up workflow", "configure TDD", "generate AGENTS.md", "recommend skills", "onboard to project", "what tools should I use", "greenfield", "just cloned", "new developer joining". Detects the project environment, recommends skills by phase, configures TDD strategy, and generates instruction files. Project-level onboarding -- NOT for writing code, tests, or performing specific dev tasks.
ALWAYS LOAD THIS SKILL WHEN WORKING WITH PYSIDE6, QT, OR DESKTOP GUI CODE. Do not write PySide6 or Qt code directly — use this skill first. PySide6 desktop apps: Manager→Service→Wrapper architecture, QML View+ViewModel (MVVM) integration, qasync integration, signals, system tray, testing.
Hosted-gateway LLM router — save 84% on inference costs. A local proxy that forwards each request to the blockrun.ai gateway, which routes to the cheapest capable model across 90 models from OpenAI, Anthropic, Google, DeepSeek, xAI, Z.AI, and more. Free open-weight models included. Also exposes realtime market data (global stocks, crypto, FX, commodities), Twitter/X intelligence, prediction-market data across Polymarket, Kalshi, Limitless, Opinion, Predict.Fun, dFlow + UMA oracle resolution + wallet identity & clustering, phone-number intelligence (carrier + SIM-swap fraud detection) plus AI-powered outbound voice calls (Twilio + Bland.ai) as built-in agent tools. Not a local-inference tool — prompts are sent to the blockrun.ai gateway.
Internal downstream skill for ctf-sandbox-orchestrator. CTF-sandbox workflow for custom binary or text protocol recovery, handshake reconstruction, framing, sequence control, checksums, stateful replay, and accepted-session reproduction. Use when the user asks to decode an unknown protocol, recover custom framing, build a replay harness, satisfy sequence or checksum rules, replay a captured session, or prove the smallest message order that reaches an accepted branch. Use only after `$ctf-sandbox-orchestrator` has already established sandbox assumptions and routed here.
Internal downstream skill for ctf-sandbox-orchestrator. CTF-sandbox workflow for firmware images, partition tables, boot chains, update packages, extracted filesystems, embedded configs, and device-facing trust boundaries. Use when the user asks to unpack firmware, map partition layout, inspect bootloader or init chains, recover update keys or credentials, trace config loading, or explain how a device surface reaches the decisive artifact. Use only after `$ctf-sandbox-orchestrator` has already established sandbox assumptions and routed here.
Find the mistakes agents keep repeating in this repo and make each one impossible. Try architecture first, then types, then a lint whose error names the fix, then a test, and write docs last. Prove each check fails on a real past mistake. Repeat this each time the operator corrects you. Use for /correct.
Enforces database integrity for PostgreSQL and Prisma systems. Use when designing schemas, writing migrations, or configuring Row-Level Security. Use for type-safe SQL, naming alignment, constraint validation, zero-trust RLS policies, UUIDv7 primary keys, and zero-downtime deployments.
Adds .NET Aspire cloud-native orchestration to existing .NET solutions. Analyzes solution structure to identify services (APIs, web apps, workers), creates AppHost and ServiceDefaults projects, configures service discovery, adds NuGet packages, and sets up distributed application orchestration. Use when adding Aspire to .NET solutions or creating new cloud-ready distributed applications.
ElectricSQL real-time Postgres sync engine using Shapes for partial replication. Covers ShapeStream API, React hooks, where clause filtering, column selection, auth proxy patterns, and progressive write strategies from online-only to through-the-database. Use when setting up ElectricSQL, configuring Postgres sync, implementing shape-based data loading, building auth proxies for shapes, or choosing write patterns for local-first apps with Electric.
Provides comprehensive guidance for Express.js framework including routing, middleware, request handling, error handling, and API development. Use when the user asks about Express, needs to create HTTP servers, set up routes, implement middleware, or build REST APIs.
Set up the Fallow app in Codex after the plugin is installed: check the fallow installation, choose the default analysis scope, run the first analysis, and show the user where the dashboard, the Code Health tab, @Fallow mentions and the config editor are. Use when the user chooses Set up for Fallow in Codex, or asks to onboard or configure the Fallow app. Do not use for setting up lint, format or CI tooling; use fallow-setup for that.
Fix a reported bug in React Router from a GitHub issue. Use when the user provides a GitHub issue URL and asks to fix a bug, investigate an issue, or reproduce a problem. Handles the full workflow: fetching the issue, finding the reproduction, writing a failing test, and implementing the fix.
Use whenever writing, debugging, or reviewing code that imports @formkit/core — FormKit's framework-agnostic core (node trees, values, events, hooks, message stores, ledgers, config, schema types, expression compiler). Provides correct 2.1.x API signatures, common-task examples, behavioral rules, and version limits.
Build the customer-facing Freemius Checkout UI in a React app — the Checkout Provider (overlay context), Subscribe (subscription pricing table), Topup (one-off / credit pricing table), Paywall, and custom checkout buttons. Use when adding a pricing page, an "upgrade"/"buy credits" button, an overlay checkout, or a paywall to a React frontend. Covers the React Starter Kit Checkout components and the frontend Checkout SDK (`@freemius/checkout`), plus the thin checkout-specific backend endpoints the front end depends on (the purchase-sync `POST /api/purchase`, `GET /api/checkout/pricing`, and the hosted-redirect handler); the underlying checkout-creation and entitlement-sync engine still belongs to `freemius-core`.
Build the Freemius Customer Portal in a React app — a self-service surface where a signed-in user manages their subscription (upgrade / change plan), cancels (with a churn-reducing retention coupon), edits billing information, and views payments & downloads invoices. Use when adding an "Account", "Billing", "Manage subscription", or "Invoices" page. Covers the React Starter Kit Customer Portal component and the SDK's headless portal processor (`freemius.customerPortal`); server-side checkout/entitlement sync is `freemius-core`.
Frontend development guidelines for React/TypeScript applications. Modern patterns including Suspense, lazy loading, useSuspenseQuery, file organization with features directory, styling best practices, routing, performance optimization, and TypeScript best practices. Use when creating components, pages, features, fetching data, styling, routing, or working with frontend code.
Fetch GitHub issues, spawn sub-agents to implement fixes and open PRs, then monitor and address PR review comments. Usage: /gh-issues [owner/repo] [--label bug] [--limit 5] [--milestone v1.0] [--assignee @me] [--fork user/repo] [--watch] [--interval 5] [--reviews-only] [--cron] [--dry-run] [--model glm-5] [--notify-channel -1002381931352]
Audit and improve GitHub Codespaces efficiency. Use this skill when a user wants faster Codespaces startup, lower Codespaces spend, slim devcontainers, right-size machines, tune idle timeout, or scope prebuilds to branches with sustained usage.
Build Solana trading applications combining DFlow trading APIs with Helius infrastructure. Covers spot swaps (imperative and declarative), prediction markets, real-time market streaming, Proof KYC, transaction submission via Sender, fee optimization, shred-level streaming via LaserStream, and wallet intelligence.
Use when the user says 'convert this html to bricks' or 'paste html into bricks', or has a Webflow, Framer, CodePen, or old static export to bring into a Bricks site. Converts raw HTML and CSS into native Bricks elements, mapping colors, type, and spacing to design tokens, plus ACSS classes when installed.
Audits a Unity project for Meta VR Glasses readiness across input and field of view — finds controller-dependent interactions such as OVRInput usage, recommends hand-tracking and ISDK controller-to-hands migrations, produces a prioritized migration plan, and detects head-locked UI that a narrower FoV would clip.
Generates a CLAUDE.md file with AI-driven environment detection and advanced configuration options. This skill should be used when the user asks to "initialize config", "setup claude config", "create CLAUDE.md", or needs help configuring project instructions.
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.