| Provider | Models | |----------|--------| | Anthropic | Claude Opus 4.6, Sonnet 4.6, Haiku 4.5 | | OpenAI | GPT-4o, GPT-4o Mini, o3-mini | | Google Gemini | Gemini 2.5 Pro, Gemini 2.5 Flash | | OpenRouter | Auto (Best Available), Claude Sonnet 4, GPT-4o | | Ollama | Llama 3.3, Qwen 2.5, + any custom model | | LM Studio | Any loaded model | | Custom | Any OpenAI-compatible endpoint |

git clone https://github.com/ThamJiaHe/claudeforge.git
cd claudeforge && npm install && npm run dev

Tech Stack: Next.js 16 · React 19 · Tailwind CSS v4 · shadcn/ui · Zustand 5 · Supabase · Shiki · Framer Motion

Claude Prompt Engineering Guide

The definitive guide to Claude prompt engineering and Claude Code mastery for Opus 4.6, Sonnet 4.6, and Haiku 4.5 — covering Skills, Plugins, MCP, Hooks, Agent Teams, Subagents, Ultrathink, and 100+ curated skills. Updated for March 2026 with Claude Code v2.1.83.

March 2026 Update

Last Updated: 26 March 2026 | Claude Code v2.1.83 | 220+ verified sources

What's New

| Feature | Description | |---------|-------------| | Claude Code v2.1.83 | Voice mode, 1M context, 128K output, remote execution, computer use | | 24 Hook Events | SessionStart, PreToolUse, PostToolUse, Stop, CwdChanged, FileChanged + more | | Agent Teams | Multi-agent coordination with file ownership and shared task lists | | Adaptive Thinking | Opus 4.6 auto-calibrates reasoning; ultrathink for max depth | | Fast Mode | /fast — 2.5x faster Opus 4.6 output ($30/$150 per MTok) | | MCP as Linux Foundation Standard | Tool Search GA, OAuth 2.1, MCP Elicitation | | 100+ Skills Catalog | Curated skills from ECC, Superpowers, and community | | 5 New Guides | Hooks, Agent Teams, Ultrathink, Plugins, Subagents | | Deep Research | 13 community repos analyzed — plugins, agents, skills, orchestration, internal architecture | | Skills Catalog | Curated top skills across 15 categories |

How to Use This Repo

1. New to Claude? Start with the Quick Start Guide
2. Prompt engineering? Read the Main Guide
3. Using Claude Code? See the Claude Code Guide + Tips & Tricks
4. Want skills? Browse the Skills Catalog (100+ curated)
5. Building with API? Read the API Guide
6. Deep diving? Explore the Deep Research Index (13 community repos analyzed)
7. Need a template? Pick from Templates

Make Claude Code Behave Like a Senior Engineer

Reading this guide teaches you what to prompt. claude-kopitiam makes Claude automatically act on it — without you having to ask every time.

It's a companion config layer: 7 rules files that install into ~/.claude/rules/ and load on every Claude Code session.

| Without kopitiam | With kopitiam | |---|---| | Write Python — generic response | router.md auto-triggers python-reviewer | | Start planning — Claude dives into code | Routes to brainstorming then writing-plans first | | Touch auth or tokens — no safety net | security.md guards fire by default | | Any commit message accepted | Conventional commits enforced automatically | | Hit 85% context — silent degradation | /save-session + /compact discipline triggers |

git clone https://github.com/ThamJiaHe/claude-kopitiam
cd claude-kopitiam && bash INSTALL.sh

All Guides

Claude Code Deep Dives

| Guide | What You'll Learn | |-------|-------------------| | Claude Code Guide | CLI tool overview, v2.1.83 features, platforms, permissions | | CLAUDE.md Guide | Configuration files, rules files, auto-memory, best practices | | Hooks Guide | All 24 hook events, 4 types, matchers, patterns | | Agent Teams Guide | Multi-agent coordination, file ownership, team patterns | | Subagents Guide | Agent tool, model routing, parallel execution, tool inheritance | | Plugins Guide | Plugin structure, marketplace, top plugins, creating plugins | | Skills Guide | Ski