Build commands, build order, TypeScript configuration, and CDK deployment. Use when building packages, troubleshooting build issues, or deploying stacks.

An autonomous loop for the agent to identify, analyze, and fix build errors using `pnpm build`.

Build coordination wrapper for VCV Rack modules using Makefile

Construit des chatwindows avec widgets interactifs ChatWidget. Guide la création de widgets selon le contrat ChatWidget, leur intégration dans ChatWindow, la configuration des workflows (OpenAI Agent / n8n), et la validation via le Playground. Utilise ce skill lorsque l'utilisateur demande de créer, modifier ou intégrer des widgets dans une conversation ChatWindow.

Guidance for building and installing Cython extension packages, particularly when resolving compatibility issues with modern Python and NumPy versions. This skill applies when installing legacy Cython packages, fixing NumPy 2.0 deprecation errors, resolving Python 3.x compatibility issues in extension modules, or troubleshooting Cython compilation failures. Use this skill for tasks involving setup.py with Cython extensions, deprecated NumPy type errors, or installing packages to system Python environments.

Automatically log meaningful insights, discoveries, and decisions during coding sessions. Capture non-trivial learnings about edge cases, design decisions, patterns, and implementation details. Activate when building complex code where institutional knowledge should be preserved. Log to .claude/insights/ and help transfer key learnings to CLAUDE.md.

>

>

Use this skill when the user says:

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.

building-chat-interfaces

building-chatgpt-apps

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.

>-

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

Build or refresh a team culture and produce a Team Culture Operating System Pack (culture snapshot, culture code, norms, rituals, rollout + measurement plan). Use for team culture, culture code, team values, team norms, psychological safety, and coaching culture. Category: Hiring & Teams.

Use when building AI agents with Anthropic's Claude Agent SDK (formerly Claude Code SDK). Triggers include creating autonomous agents, building agentic applications, SDK-based automation, implementing hooks/subagents/MCP servers, session management, or agent tool usage. NOT when using Claude API directly (use anthropic-sdk) or building MCP servers from scratch (use mcp-builder).

Use when building distributed microservices with Dapr sidecar architecture. Triggers include Dapr components, service invocation, state management, pub/sub, secrets, bindings, configuration, actors, and workflows. NOT for direct infrastructure clients (use building-with-kafka-strimzi instead).

Use when building event-driven systems with Apache Kafka on Kubernetes. Triggers include EDA patterns, Kafka producers/consumers, Strimzi operator deployment, Schema Registry, transactions, exactly-once semantics. NOT for general messaging (use Dapr pub/sub for abstraction).

Use when building AI agents with OpenAI's Agents SDK. Triggers include creating agents, implementing tools, multi-agent handoffs, guardrails, MCP integration, tracing. Also for using LiteLLM to run agents on free/alternative models (Anthropic, Gemini). NOT for general OpenAI API usage (use openai-python SDK docs instead).

Bump the version of a plugin in this repository. Use to increment plugin versions and update marketplace metadata.

Build and deploy Cloudflare Workers using Bun for development.

Initialize a new Bun project with TypeScript and optimal configuration. Use when starting a new Bun project or converting a directory to a Bun project.

Use when building server-rendered React with Bun, including streaming SSR, hydration, renderToString, or custom SSR without a framework.

Use when working with Redis in Bun (ioredis, Upstash), caching, pub/sub, session storage, or key-value operations.

Bun has built-in WebSocket support integrated with `Bun.serve()`.

Use for Web Workers in Bun, worker_threads, parallel processing, and background tasks.

Business analysis skill for requirements gathering, market research, strategic analysis, and project brief creation. Use when users need to (1) Create comprehensive project briefs, (2) Conduct market or competitive analysis, (3) Facilitate brainstorming sessions, (4) Define problems and validate assumptions, (5) Elicit requirements through structured questioning, (6) Create user personas, or (7) Analyze project feasibility and scope

MBA-trained business strategist with full commercial awareness. USE WHEN user says 'business plan', 'financial analysis', 'P&L', 'cash flow', 'valuation', 'market analysis', 'competitive analysis', 'SWOT', 'business model', 'unit economics', 'fundraising', 'pitch deck', or needs strategic business guidance.

Add cinematic lerp-based smooth scrolling for all scroll inputs (mouse wheel, trackpad, touch). Creates butter-smooth momentum scrolling like premium agency websites. Works alongside existing smooth-scroll anchor links.

Align DNA short reads to reference genomes using bwa-mem2, the faster successor to BWA-MEM. Use when aligning DNA short reads to a reference genome.

Guidelines for C# development including Blazor, Unity game development, and .NET backend best practices

Use when verifying C3 documentation quality - checks methodology compliance (layer rules, structure, diagrams) and implementation conformance (docs vs code drift)

cache-components

cache-health

The 4 layers of caching (Memoization, Data Cache, Full Route, Router Cache).

caddy-https-troubleshoot

caddy

Interact with the Cal.com API v2 to manage scheduling, bookings, event types, availability, and calendars. Use this skill when building integrations that need to create or manage bookings, check availability, configure event types, or sync calendars with Cal.com's scheduling infrastructure.

Calendly scheduling automation using REST API v2 for managing event types, availability, bookings, webhooks, and scheduling workflows

Complete guide to implementing deep links and universal links in Capacitor apps. Covers iOS Universal Links, Android App Links, custom URL schemes, and navigation handling. Use this skill when users need to open their app from links.

Guide to handling keyboard in Capacitor apps including visibility detection, accessory bar, scroll behavior, and input focus. Use this skill when users have keyboard-related issues.

Use percentage-based capital limits, not hard-coded dollar amounts. Trigger when: (1) trades blocked on small accounts, (2) min_cash_buffer is absolute dollars, (3) capital allocation doesn't scale with account size, (4) fixed dollar thresholds in risk code.

Competency frameworks, level expectations (Junior to Staff+), and career progression paths for software engineers. Use when navigating promotions, understanding level requirements, or planning career advancement.

>

Use when implementing Cashu token wallet functionality - provides complete patterns for sending and receiving Cashu tokens, token QR codes, automatic mint management, and integrating with Lightning wallet operations

Build desktop, web, or terminal UIs with Castella. Create widgets, components, layouts, manage reactive state, handle events, and use the theme system.