mjs-agent-skills

In the author's own words, from each skill's SKILL.md — showing the first 30 of 68 files.

• browsing-with-playwright

  Browser automation using Playwright MCP. Navigate websites, fill forms, click elements, take screenshots, and extract data. Use when tasks require web browsing, form submission, web scraping, UI testing, or any browser interaction. NOT when only fetching static content (use curl/wget instead).

  .claude/skills/browsing-with-playwright/SKILL.md on GitHub (opens in a new tab)

• building-chat-interfaces

  Build AI chat interfaces with custom backends, authentication, and context injection. Use when integrating chat UI with AI agents, adding auth to chat, injecting user/page context, or implementing httpOnly cookie proxies. Covers ChatKitServer, useChatKit, and MCP auth patterns. NOT when building simple chatbots without persistence or custom agent integration.

  .claude/skills/building-chat-interfaces/SKILL.md on GitHub (opens in a new tab)

• building-chat-widgets

  Build interactive AI chat widgets with buttons, forms, and bidirectional actions. Use when creating agentic UIs with clickable widgets, entity tagging (@mentions), composer tools, or server-handled widget actions. Covers full widget lifecycle. NOT when building simple text-only chat without interactive elements.

  .claude/skills/building-chat-widgets/SKILL.md on GitHub (opens in a new tab)

• building-chatgpt-apps

  Guides creation of ChatGPT Apps with interactive widgets using OpenAI Apps SDK and MCP servers. Use when building ChatGPT custom apps with visual UI components, embedded widgets, or rich interactive experiences. Covers widget architecture, MCP server setup with FastMCP, response metadata, and Developer Mode configuration. NOT when building standard MCP servers without widgets (use building-mcp-se…

  .claude/skills/building-chatgpt-apps/SKILL.md on GitHub (opens in a new tab)

• building-mcp-servers

  Guides creation of high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK). Covers tool design, authentication, Docker deployment, and evaluation creation. NOT when consuming existing MCP servers (…

  .claude/skills/building-mcp-servers/SKILL.md on GitHub (opens in a new tab)

• building-nextjs-apps

  Build Next.js 16 applications with correct patterns and distinctive design. Use when creating pages, layouts, dynamic routes, upgrading from Next.js 15, or implementing proxy.ts. Covers breaking changes (async params/searchParams, Turbopack, cacheComponents) and frontend aesthetics. NOT when building non-React or backend-only applications.

  .claude/skills/building-nextjs-apps/SKILL.md on GitHub (opens in a new tab)

• building-rag-systems

  Build production RAG systems with semantic chunking, incremental indexing, and filtered retrieval. Use when implementing document ingestion pipelines, vector search with Qdrant, or context-aware retrieval. Covers chunking strategies, change detection, payload indexing, and context expansion. NOT when doing simple similarity search without production requirements.

  .claude/skills/building-rag-systems/SKILL.md on GitHub (opens in a new tab)

• configuring-better-auth

  Implement OAuth 2.1 / OIDC authentication using Better Auth with MCP assistance. Use when setting up a centralized auth server (SSO provider), implementing SSO clients in Next.js apps, configuring PKCE flows, or managing tokens with JWKS verification. Uses Better Auth MCP for guided setup. NOT when using simple session-only auth without OAuth/OIDC requirements.

  .claude/skills/configuring-better-auth/SKILL.md on GitHub (opens in a new tab)

• creating-skills

  Guides creation of effective Agent Skills with proper structure and validation. Use when users want to create a new skill, update an existing skill, or need guidance on skill design patterns, SKILL.md format, or verify.py implementation. NOT when just using existing skills (use those skills directly).

  .claude/skills/creating-skills/SKILL.md on GitHub (opens in a new tab)

• docker

  Production-grade Docker containerization for Python and Node.js applications. This skill should be used when users ask to containerize applications, create Dockerfiles, dockerize projects, or set up Docker Compose. Auto-detects project structure, analyzes .env for secrets, validates security, and generates tested Dockerfiles.

  .claude/skills/docker/SKILL.md on GitHub (opens in a new tab)

• evaluation

  Build evaluation frameworks for agent systems. Use when testing agent performance, validating context engineering choices, or measuring improvements over time.

  .claude/skills/evaluation/SKILL.md on GitHub (opens in a new tab)

• fetching-library-docs

  Token-efficient library API documentation fetcher using Context7 MCP with 77% token savings. Fetches code examples, API references, and usage patterns for published libraries (React, Next.js, Prisma, etc). Use when users ask "how do I use X library", need code examples, want API syntax, or are learning a framework's official API. Triggers: "Show me React hooks", "Prisma query syntax", "Next.js ro…

  .claude/skills/fetching-library-docs/SKILL.md on GitHub (opens in a new tab)

• helm

  Production-grade Helm 4 chart development, release management, and debugging. This skill should be used when users ask to create Helm charts, deploy with Helm, manage releases (install/upgrade/rollback), push charts to OCI registries, debug failed deployments, configure chart dependencies, create umbrella charts, set up GitOps with ArgoCD/Flux, or troubleshoot Helm issues. Auto-detects from Docke…

  .claude/skills/helm/SKILL.md on GitHub (opens in a new tab)

• hypothesis-annotation-visibility

  Diagnose and fix Hypothesis (hypothes.is) annotation visibility — why two people in the same group see different annotation counts, why a class or study group can't see someone's notes, why highlights never show up for anyone else, and how to safely move "Only Me" annotations into a group or pull accidentally-public ones back out. Use this whenever someone mentions Hypothesis, hypothes.is, web an…

  .claude/skills/hypothesis-annotation-visibility/SKILL.md on GitHub (opens in a new tab)

• installing-skill-tracker

  Installs Claude Code hooks for automatic skill usage measurement. Use when setting up skill tracking infrastructure in a new project. NOT when hooks are already installed (run verify.py to check).

  .claude/skills/installing-skill-tracker/SKILL.md on GitHub (opens in a new tab)

• internal-comms

  A set of resources to help me write all kinds of internal communications, using the formats that my company likes to use. Claude should use this skill whenever asked to write some sort of internal communications (status reports, leadership updates, 3P updates, company newsletters, FAQs, incident reports, project updates, etc.).

  .claude/skills/internal-comms/SKILL.md on GitHub (opens in a new tab)

• kafka

  Apache Kafka on Kubernetes with Strimzi (KRaft mode, no ZooKeeper). This skill should be used when users ask to deploy Kafka clusters, build producers/consumers, implement event-driven patterns, or debug Kafka issues. Includes tested manifests and Makefile for one-command deployment.

  .claude/skills/kafka/SKILL.md on GitHub (opens in a new tab)

• kubernetes

  Production-grade Kubernetes manifests and debugging for containerized applications. This skill should be used when users ask to deploy to Kubernetes, create K8s manifests, containerize for K8s, set up Deployments/Services/Jobs/StatefulSets/CronJobs, create namespaces with resource quotas, set up multi-team isolation, configure ResourceQuota/ LimitRange, secure with RBAC (ServiceAccount, Role, Rol…

  .claude/skills/kubernetes/SKILL.md on GitHub (opens in a new tab)

• local-llm-claude-code

  Set up a FREE local LLM (via Ollama) and connect Claude Code to it so it runs offline with no API costs. Use this whenever the user wants to run Claude Code on a local/self-hosted model, use Ollama/Qwen/Llama/Mistral/DeepSeek with Claude Code, get a "free" or "offline" coding agent, avoid Anthropic API costs, point ANTHROPIC_BASE_URL at localhost, or asks "can my machine/VPS run a local LLM for C…

  .claude/skills/local-llm-claude-code/SKILL.md on GitHub (opens in a new tab)

• memory-systems

  Design and implement memory architectures for agent systems. Use when building agents that need to persist state across sessions, maintain entity consistency, or reason over structured knowledge.

  .claude/skills/memory-systems/SKILL.md on GitHub (opens in a new tab)

• multi-agent-patterns

  Design multi-agent architectures for complex tasks. Use when single-agent context limits are exceeded, when tasks decompose naturally into subtasks, or when specializing agents improves quality.

  .claude/skills/multi-agent-patterns/SKILL.md on GitHub (opens in a new tab)

• nextjs-devtools

  Next.js development tooling via MCP. Inspect routes, components, build info, and debug Next.js apps. Use when working on Next.js applications, debugging routing, or inspecting app structure. NOT for general React or non-Next.js projects.

  .claude/skills/nextjs-devtools/SKILL.md on GitHub (opens in a new tab)

• nx-monorepo

  Nx monorepo management skill for AI-native development. This skill should be used when working with Nx workspaces, project graphs, affected detection, code generation, and caching. Use when: analyzing dependencies, running affected commands, generating code, configuring Nx Cloud, or optimizing build performance. Invoke nx-mcp tools for documentation queries.

  .claude/skills/nx-monorepo/SKILL.md on GitHub (opens in a new tab)

• operating-production-services

  SRE patterns for production service reliability: SLOs, error budgets, postmortems, and incident response. Use when defining reliability targets, writing postmortems, implementing SLO alerting, or establishing on-call practices. NOT for initial service development (use scaffolding skills instead).

  .claude/skills/operating-production-services/SKILL.md on GitHub (opens in a new tab)

• researching-with-deepwiki

  Research GitHub, GitLab, and Bitbucket repositories using DeepWiki MCP server. Use when exploring unfamiliar codebases, understanding project architecture, or asking questions about how a specific open-source project works. Provides AI-powered repo analysis and RAG-based Q&A about source code. NOT for fetching library API docs (use fetching-library-docs instead) or local files.

  .claude/skills/researching-with-deepwiki/SKILL.md on GitHub (opens in a new tab)

• scaffolding-fastapi-dapr

  Build production-grade FastAPI backends with SQLModel, Dapr integration, and JWT authentication. Use when building REST APIs with Neon PostgreSQL, implementing event-driven microservices with Dapr pub/sub, scheduling jobs, or creating CRUD endpoints with JWT/JWKS verification. NOT when building simple scripts or non-microservice architectures.

  .claude/skills/scaffolding-fastapi-dapr/SKILL.md on GitHub (opens in a new tab)

• scaffolding-openai-agents

  Builds AI agents using OpenAI Agents SDK with async/await patterns and multi-agent orchestration. Use when creating tutoring agents, building agent handoffs, implementing tool-calling agents, or orchestrating multiple specialists. Covers Agent class, Runner patterns, function tools, guardrails, and streaming responses. NOT when using raw OpenAI API without SDK or other agent frameworks like LangC…

  .claude/skills/scaffolding-openai-agents/SKILL.md on GitHub (opens in a new tab)

• streaming-llm-responses

  Implement real-time streaming UI patterns for AI chat applications. Use when adding response lifecycle handlers, progress indicators, client effects, or thread state synchronization. Covers onResponseStart/End, onEffect, ProgressUpdateEvent, and client tools. NOT when building basic chat without real-time feedback.

  .claude/skills/streaming-llm-responses/SKILL.md on GitHub (opens in a new tab)

• styling-with-shadcn

  Build beautiful, accessible UIs with shadcn/ui components in Next.js. Use when creating forms, dialogs, tables, sidebars, or any UI components. Covers installation, component patterns, react-hook-form + Zod validation, and dark mode setup. NOT when building non-React applications or using different component libraries.

  .claude/skills/styling-with-shadcn/SKILL.md on GitHub (opens in a new tab)

• systematic-debugging

  Systematic methodology for debugging bugs, test failures, and unexpected behavior. Use when encountering any technical issue before proposing fixes. Covers root cause investigation, pattern analysis, hypothesis testing, and fix implementation. Use ESPECIALLY when under time pressure, "just one quick fix" seems obvious, or you've already tried multiple fixes. NOT for exploratory code reading.

  .claude/skills/systematic-debugging/SKILL.md on GitHub (opens in a new tab)

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