Build tools expert including Vite, Webpack, and bundler configuration

Build tool configuration for tsup, tsx, and bundlers. Use when setting up build pipelines.

FAQ for diagnosing and resolving build and test failures

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Build a variant using locally published kits for development validation

Use this skill when the user says:

builder-role-skill

Unified UV CLI scripts collection with builder-skill_ prefix following IndieDevDan patterns for system analysis, code generation, development tools, and automation

Builder user experience systems for Three.js building games. Use when implementing prefab/blueprint save/load, undo/redo command patterns, ghost preview placement, multi-select, or copy/paste building mechanics. Covers the UX layer that makes building feel responsive and intuitive.

Workflow orchestration skill for builder ecosystem - repo analysis, SPEC creation, and generation workflows for skills, agents, and UV scripts

Help users get promoted at work. Use when someone is preparing for a promotion conversation, building their case for advancement, trying to understand what's blocking their promotion, or figuring out how to get to the next level in their career.

Build a promotion case and produce a Promotion Case Pack (target role + timeline, ladder mapping, evidence log, impact narrative, manager alignment plan, sponsor/visibility map, submission-ready promo doc). Use for promotion packet, getting promoted, leveling up, career ladder, promotion committee. Category: Career.

Guide for creating effective tools for AI agents. Use when building MCP tools, agent APIs, or any tool interface that agents will consume. Focuses on token efficiency, meaningful context, and proper namespacing.

Step-by-step guide for building goal-driven agents. Creates package structure, defines goals, adds nodes, connects edges, and finalizes agent class. Use when actively building an agent.

Core concepts for goal-driven agents - architecture, node types, tool discovery, and workflow overview. Use when starting agent development or need to understand agent fundamentals.

Best practices, patterns, and examples for building goal-driven agents. Includes pause/resume architecture, hybrid workflows, anti-patterns, and handoff to testing. Use when optimizing agent design.

Expert at creating and modifying Claude Code agents (subagents). Auto-invokes when the user wants to create, update, modify, enhance, validate, or standardize agents, or when modifying agent YAML frontmatter fields (especially 'model', 'tools', 'description'), needs help designing agent architecture, or wants to understand agent capabilities. Also auto-invokes proactively when Claude is about to write agent files (*/agents/*.md), create modular agent architectures, or implement tasks that involve creating agent components.

Builds AI chat interfaces and conversational UI with streaming responses, context management, and multi-modal support. Use when creating ChatGPT-style interfaces, AI assistants, code copilots, or conversational agents. Handles streaming text, token limits, regeneration, feedback loops, tool usage visualization, and AI-specific error patterns. Provides battle-tested components from leading AI products with accessibility and performance built in.

Builds, tests, and archives Swift packages and Xcode projects for Apple platforms. Use when running xcodebuild, swift build, or swift test commands, discovering schemes and targets, or selecting simulator destinations for iOS, macOS, tvOS, watchOS, or visionOS.

Guide for creating new AEM Edge Delivery blocks or modifying existing blocks. Use this skill whenever you are creating a new block from scratch or making significant changes to existing blocks that involve JavaScript decoration, CSS styling, or content model changes.

building-chat-interfaces

building-chat-widgets

building-chatgpt-apps

Constructs secure, efficient CI/CD pipelines with supply chain security (SLSA), monorepo optimization, caching strategies, and parallelization patterns for GitHub Actions, GitLab CI, and Argo Workflows. Use when setting up automated testing, building, or deployment workflows.

Use this skill when creating new Claude Code skills from scratch, editing existing skills to improve their descriptions or structure, or converting Claude Code sub-agents or slash commands to skills. This includes designing skill workflows, writing SKILL.md files, organizing supporting files with intention-revealing names, and leveraging CLI tools and appropriate scripting.

Use when building command-line interface tools; when choosing argument parsing libraries; when handling stdin/stdout/stderr patterns; when implementing subcommands; when tests for CLI apps fail or are missing

Build professional command-line interfaces in Python, Go, and Rust using modern frameworks like Typer, Cobra, and clap. Use when creating developer tools, automation scripts, or infrastructure management CLIs with robust argument parsing, interactive features, and multi-platform distribution.

Expert at creating and modifying Claude Code slash commands. Auto-invokes when the user wants to create, update, modify, enhance, validate, or standardize slash commands, or when modifying command YAML frontmatter fields (especially 'model', 'allowed-tools', 'description'), needs help designing command workflows, or wants to understand command arguments and parameters. Also auto-invokes proactively when Claude is about to write command files (*/commands/*.md), or implement tasks that involve creating slash command components.

Provides patterns for building detailed structures programmatically using Parts and CSG. Use when creating buildings, towers, vehicles, or any brick-by-brick constructions in code.

Create markdown indexes of GitHub repositories optimized for Claude project knowledge. Indexes enable retrieval of source content (.md, .qmd, .ipynb) via GitHub API without parsing rendered HTML/CSS/J

Use when creating reusable GitLab CI/CD configurations, building component catalog entries, or packaging pipeline templates for sharing - provides systematic guide following GitLab documentation to avoid missing required files, directory structure, input specifications, or testing/publishing configuration

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Expert at creating and modifying Claude Code event hooks for automation and policy enforcement. Auto-invokes when the user wants to create, update, modify, enhance, validate, or standardize hooks, or when modifying hooks.json configuration, needs help with event-driven automation, or wants to understand hook patterns. Also auto-invokes proactively when Claude is about to write hooks.json files, or implement tasks that involve creating event hook configurations.

LangGraph development for stateful multi-agent applications, cyclic workflows, conditional routing, human-in-the-loop patterns, and persistent state management. Use for complex AI orchestration, agent coordination, and production-grade agentic systems.

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building-mcp-servers

Use when building MCP servers in TypeScript, Python, or C#; when implementing tools, resources, or prompts; when configuring Streamable HTTP transport; when migrating from SSE; when adding OAuth authentication; when seeing MCP protocol errors

Comprehensive architecture patterns for multi-agent systems where AI agents coordinate to accomplish complex tasks using tools. Language-agnostic and applicable across TypeScript, Python, Go, Rust, an

building-nextjs-apps

Expert at creating and managing Claude Code plugins that bundle agents, skills, commands, and hooks into cohesive packages. Auto-invokes when the user wants to create, structure, validate, or publish a complete plugin, or needs help with plugin architecture and best practices. Also auto-invokes proactively when Claude is about to create plugin directory structures, write plugin.json manifests, or implement tasks that involve bundling components into a plugin package.

Strategies for transforming a software product into a global community and ecosystem. Use this when launching open-source projects, building developer platforms, or seeking to create a competitive moat through ecosystem incentives rather than just features.

Used to build a project

building-rag-systems

Router for 3D building game mechanics in Three.js. Use when creating survival games, sandbox builders, base builders, or any game with player-constructed structures. Routes to 9 specialized skills for performance, physics, multiplayer, terrain, decay, UX, platform support, and design reference. Start here for building mechanics projects.

Help users build and scale their sales organization. Use when someone is hiring their first salespeople, deciding when to bring on sales leadership, structuring sales compensation, or transitioning from founder-led sales.

Build an early sales team and operating cadence (readiness gate, hiring plan, role scorecards, interview loop, onboarding/ramp). Use for first AE/SDR hires, seed→Series A sales team build, and product-led sales pilot. Category: Sales & GTM.

Use when creating new Claude Code skills, setting up marketplace repositories, or packaging skills for distribution - complete workflow from skill creation to marketplace publication

Expert at creating and modifying Claude Code skills. Auto-invokes when the user wants to create, update, modify, enhance, validate, or standardize skills, or when modifying skill YAML frontmatter fields (especially 'allowed-tools', 'description'), needs help designing skill architecture, or wants to understand when to use skills vs agents. Also auto-invokes proactively when Claude is about to write skill files (*/skills/*/SKILL.md), create skill directory structures, or implement tasks that involve creating skill components.

Use when creating static websites with Next.js static export - covers YAML-based content, image optimization, form handling, SEO, and deployment to GitHub Pages/Netlify/Vercel

Expert for building user stories using Test-Driven Development (TDD) with NestJS and @lenne.tech/nest-server. Implements new features by creating story tests first in tests/stories/, then uses generating-nest-servers skill to develop code until all tests pass. Ensures high code quality and security compliance. Use in projects with @lenne.tech/nest-server in package.json dependencies (supports monorepos with projects/*, packages/*, apps/* structure).