Skills
97,725 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
Page components, persistent layouts, Link/router navigation, Head, Deferred, WhenVisible, InfiniteScroll, and URL-driven state for Inertia Rails. React examples inline; Vue and Svelte equivalents in references. Use when building pages, adding navigation, implementing persistent layouts, infinite scroll, lazy-loaded sections, or working with client-side Inertia APIs (router.reload, router.replaceProp, prefetching).
Optimize UI performance against Core Web Vitals (LCP, INP, CLS) with loading/code-split strategy, layout-shift prevention, and animation performance rules. Use when the user wants to improve speed, fix jank or layout shift, hit Web Vitals budgets, or make a UI feel fast on low-end devices
Break a PRD into independently deliverable phases using vertical slices (tracer bullets), then create or extend `docs/PLAN.md` according to a fixed template (architectural decisions + phases with user stories, deliverables, acceptance criteria, dependencies). Use for /planifie, "break down the PRD", "make the implementation plan", "break this into phases", "write the plan", "extend the plan", "tracer bullets", "vertical slices", or whenever a PRD needs to be turned into a versioned execution plan. Natural follow-up to /cadre.
Review existing Rust code for idiom, API design, error handling, safety, and maintainability, and produce a prioritized report where every finding cites the rule it breaks and gives a concrete fix. Use this whenever the user asks to review, audit, critique, grade, or "check" Rust code, a crate, a module, a .rs file, a diff, or a pull request, or asks what is wrong with their Rust or how to make it more idiomatic, even if they don't say "review". Pairs with the rust-best-practices skill, which covers writing new code.
Use when you need to run interactive CLI tools (vim, git rebase -i, Python REPL, etc.) that require real-time input/output - provides tmux-based approach for controlling interactive sessions through detached sessions and send-keys
This skill should be used when configuring VS Code Port Monitor extension for development server monitoring. Use when the user asks to "set up port monitoring for Vite", "monitor my dev server ports", "configure port monitor for Next.js", "track which ports are running", "set up multi-port monitoring", "monitor frontend and backend ports", or "check port status in VS Code". Provides ready-to-use configuration templates for Vite (5173), Next.js (3000), and microservices architectures with troubleshooting guidance.
Use this skill when the user asks to “create a hedera plugin,” “build a hedera agent kit plugin,” “extend hedera agent kit,” “create custom hedera tools,” “add hedera functionality,” “write a hedera tool,” or “implement hedera tool,” or needs guidance on Hedera Agent Kit plugin architecture, tool definitions, mutation tools, query tools, or parameter schemas using Zod.
RISC-V assembly skill for RV32/RV64 programming. Use when working with the RISC-V ISA, calling conventions (psABI), inline assembly with GCC/Clang, understanding extension naming (IMAFD), compressed instructions, or simulating RISC-V with QEMU and GDB remote debugging. Activates on queries about RISC-V assembly, RV32, RV64, RISC-V calling convention, RISC-V inline asm, RISC-V extensions, QEMU RISC-V, or RISC-V GDB.
Migrate browser-use (Python) browser-automation scripts to Stagehand v3 (TypeScript) on Browserbase. Use when the user wants to convert, port, rewrite, or migrate a browser-use Agent script to Stagehand, map browser-use features/APIs to Stagehand primitives (act/extract/observe/agent), or move agentic browser automation onto Browserbase with more determinism. Triggers on "browser-use", "browser_use", or "Agent(task=...)".
Design and implement HTTP APIs with Hono. Covers OpenAPI compliance with @hono/zod-openapi, RFC 9457 problem+json errors, path versioning, Bearer authentication and Origin validation for loopback services, health checks, Spectral linting, and @hono/mcp. Use when asked to add, modify, or review API endpoints, routing, OpenAPI schemas, authentication methods, error responses, or MCP servers.
Hedera Token Service (HTS) smart contract development. Use when creating, managing, or interacting with Hedera-native tokens via Solidity contracts. Triggers include HTS tokens, Hedera token creation, HTS precompile, token minting/burning on Hedera, KYC/freeze/pause token controls, custom fee schedules, NFT collections on Hedera, or any token operations using the 0x167 precompile.
Use when observing iii functions with iii.observe, writing filters, reacting to engine events, writing observable functions with owner delivery (onObserverAdded, obs.emit, obs.call), tuning local dispatch, or migrating from the deprecated registerTrigger / registerTriggerType across TypeScript, browser, Python, Rust, and Go
Use when reviewing, fixing, or improving an EXISTING Elastic integration package. Covers quality reviews, targeted fixes (pipelines, field mappings, CEL programs, manifests, changelogs), full improvement passes, and minor adjustments. Use create-integration instead when creating a new package or adding a new data stream from scratch.
Transform a PRD into a technical SPEC document covering architecture, API design, data model, error handling, and implementation contracts. Triggers on: prd-to-spec, prd to spec, prd转spec, 需求转设计, 需求转规格, generate spec from prd, design from prd, 技术方案, 设计方案
Use Proxyman MCP to inspect and debug HTTP, HTTPS, and WebSocket traffic and operate the complete Proxyman MCP surface. Use for flows, API diagnosis, filtering, export, replay, Compose, debugging rules, WebSockets, recording, proxy and certificate control, code generation, or guided setup.
Implement webhook systems for event-driven integration with retry logic, signature verification, and delivery guarantees. Use when creating event notification systems, integrating with external services, or building event-driven architectures.
Build WCAG 2.1 AA compliant websites with semantic HTML, proper ARIA, focus management, and screen reader support. Includes color contrast (4.5:1 text), keyboard navigation, form labels, and live regions. Use when implementing accessible interfaces, fixing screen reader issues, keyboard navigation, or troubleshooting "focus outline missing", "aria-label required", "insufficient contrast".
Apifox CLI usage checks and version confirmation: use when commands succeed but nothing shows on the page, list/get cannot find something after creation, test runs fail, reports are missing, agentHints/help/actual behavior are inconsistent, or when you suspect the local CLI version is not the latest.
Use when building a Kubernetes Operator — custom controllers that reconcile CRD state. Triggers on "build an operator", "CRD design", "reconcile loop", "controller-runtime", "kubebuilder", "operator-sdk", "metacontroller", "KOPF", "operator capability levels", or "custom resource". Ships CRD validator, reconcile-loop linter, and OperatorHub capability auditor (all stdlib Python), 4 references on the operator pattern + CRD design + reconcile patterns + tooling landscape, and a /operator-audit slash command. NOT a generic k8s skill — specifically the Operator pattern.
Migrates existing Xcode projects to Tuist generated workspaces with build and run validation, external dependency mapping, and migration checklists. Use when adopting Tuist for an existing app or converting a hand-edited Xcode project to generated projects.
Build browser automation and web scraping with Playwright on your local machine. Prevents 10 documented errors including CI timeout hangs, extension testing failures, and Ubuntu compatibility issues. Includes stealth mode for anti-bot bypass, authenticated sessions, infinite scroll handling, screenshot/PDF generation, and v1.57 Speedboard performance analysis. Use when: automating browsers, scraping protected sites, testing with real IPs, bypassing bot detection, generating screenshots/PDFs, or troubleshooting "target closed", "page.pause() hangs CI", "permission prompts block tests", or "Ubuntu 25.10 installation" errors.
Use when implementing, integrating, upgrading, debugging, or answering anything involving third-party APIs, libraries, frameworks, CLIs, cloud services, model/provider SDKs, fast-moving product behavior, user requests for latest/current/official behavior, unfamiliar repo docs/specs, errors that may indicate API drift, or high-stakes auth, security, billing, data, migration, deployment, compliance, or privacy behavior. Forces Codex to web-search for current official docs and read primary docs before assuming from memory.
Hedera Schedule Service (HSS) smart contract development. Use when creating or interacting with scheduled transactions from Solidity via the Schedule Service system contract at 0x16b (e.g. scheduleNative for token creation, scheduleCall for generalized contract calls, authorizeSchedule, signSchedule, deleteSchedule, or querying scheduled token info).
Apply DESIGN, canon, and modules to every page in the inventory, producing a deployable static HTML site. Use to migrate or render the whole captured site into the redesigned static tree ("migrate the pages", "render the migrated site", "apply the design to all pages", "build the deployable site", "convert the approved prototype into the full site") — the page-rendering step between prototype and deploy/rollout. Three render branches (approved page, template-applied sibling, unique render), with a declared fidelity tier per page. Per-page, incremental, idempotent, content-preserving by default.
Prepare an entire site for migration by orchestrating the prep cascade — a full-inventory crawl (extract --prep), page-type and module-catalog confirmation (direct --prep), archetype prototypes plus design canon (prototype --prep), and asset preparation — with confirmation gates between phases. Builds the typed page inventory, confirmed module catalog, and canon consumed by `migrate`. Use when the user wants to prepare or set up a full-site migration, run migration prep, confirm page types and modules before migrating a site, get a large site ready to migrate, or invokes `$stardust prepare-migration`. Trigger phrases include “prepare the migration”, “migration prep”, “set up the migration data”, and “get the site ready to migrate”. Redesign flow only — for same-design migrations, `replica` runs its own preserve-mode prep cascade; never chain prepare-migration with replica. Not for running the migration itself (`migrate`) or converting a single page (`deploy`).
Design, implement, review, and migrate XState v5 state machines and statecharts in TypeScript using modern v5 patterns. Use this whenever the user mentions XState, actors, state machines, statecharts, guards, transitions, workflows, or Stately, or is modeling non-trivial UI/app/process logic in a codebase that uses XState. Prefer a short machine sketch before code when requirements are fuzzy. If the problem is too simple for a state machine, say so and recommend @xstate/store instead.
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.