This repository is automatically kept up to date. Every week, an AI agent researches the latest Claude, Anthropic, MCP, and AI news — then opens a PR with updates across all guides, skills, and templates. I review and merge it manually. You're always reading current information.
This repo runs on API credits — every coffee keeps it alive and updated. Perplexity + Anthropic APIs power the weekly research agent that keeps every guide current. If this guide saved you time, a coffee goes a long way.
Select Your Language:
ClaudeForge is the companion web app for this guide — it takes everything documented here and puts it into action. Describe what you need in plain English, pick your AI provider, and get a polished, model-optimized prompt in seconds.
7 AI Providers · 5 Prompt Targets · 9 Output Formats · Local LLM Support · BYOK
| What You Get | Details |
|---|---|
| 7 AI Providers | Anthropic Claude, OpenAI, Google Gemini, OpenRouter, Ollama, LM Studio, Custom |
| 5 Prompt Targets | Claude, GPT, Gemini, Llama, Universal — each optimized for its model family |
| 9 Output Formats | XML (Anthropic), TOON, Harness, Markdown, Plain Text, JSON, YAML, Claude.md, System+User Split |
| Instant Format Switching | Switch between all 9 formats client-side — no regeneration needed |
| Extended Thinking | Toggle on/off with configurable effort levels |
| Skill Suggestions | Get relevant Claude Code plugin recommendations for your prompt |
| Prompt History | Browse, search, filter, and favorite past generations |
| BYOK | Bring Your Own Key — API keys stay in your browser, never touch our servers |
| Local LLM Support | Use Ollama or LM Studio with no API key required |
| 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
- New to Claude? Start with the Quick Start Guide
- Prompt engineering? Read the Main Guide
- Using Claude Code? See the Claude Code Guide + Tips & Tricks
- Want skills? Browse the Skills Catalog (100+ curated)
- Building with API? Read the API Guide
- Deep diving? Explore the Deep Research Index (13 community repos analyzed)
- 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 |