Most Claude Code projects start with a CLAUDE.md and nothing else. Here is the full structure that turns Claude from a coding assistant into an engineering partner.

The complete directory

your-project/
├── CLAUDE.md
├── CLAUDE.local.md
├── mcp.json
└── claude/
    ├── settings.json
    ├── rules/
    │   ├── code-style.md
    │   ├── testing.md
    │   └── api-conventions.md
    ├── commands …

When you send a prompt to an LLM, three layers shape how fast you get a response: the hardware (GPUs, TPUs, LPUs), the model size and architecture, and the inference engine strategies sitting on top. Most of the latency battle is fought at that third layer — and the core problem …

PromptTemplate is one of those ideas that sounds technical but is actually something you already understand from everyday life. Here are three ways to see it clearly.

Cookie Cutter 🍪

The Shape — A star-shaped cookie cutter that never changes. You press it into any dough and get the same star, every …

If you are shipping agentic systems in 2026 and these six terms are fuzzy, you are building on sand. This is the foundational vocabulary — not hype, not vendor marketing, just the concepts that actually show up when you are designing, debugging, or scaling an agent pipeline.

The Six Terms

Model …

We encode information every single day — and we almost never think about it.

A student called me to get her account unlocked. She dictated her password over the phone: apple1234. I typed it in. Login failed. We went back and forth, both confused. Then she clarified: she meant appleOne2Three4.

Same …

The multi-agent space is fracturing fast. Teams pick LangGraph one quarter, switch to CrewAI the next, then discover Google ADK or AWS Strands and wonder if they should migrate again. Every switch costs weeks — ripping out abstractions, rewriting orchestration logic, re-testing state management. This is the exact problem Terraform solved …

If you've ever wondered what --set-upstream really means in Git — or why it isn't just called --set-remote — this post breaks it down, along with practical tricks to explore Git options faster.

Core Concepts

--set-upstream vs --set-remote — "remote" in Git already refers to the server (like origin), so naming it --set-remote …

"The issue isn't the coding agent's coding ability, but our approach.
We treat coding agents like search engines when we should be treating them
more like literal-minded pair programmers."
— Den Delimarsky, GitHub Principal Product Manager

The Problem With Vibe Coding

If you've used an AI coding assistant, you've experienced vibe …

Building reliable AI agents isn't just about picking the right model — it's about the patterns you wire around it. Here's a concise reference of 15 agentic system design concepts worth knowing. Two lines each — just enough to understand what they do and why they matter.

Resilience & Failure Isolation

Agent Circuit …

Claude Code is not a chatbot. It lives in your terminal, reads your actual files, writes code, runs commands, and executes multi-step workflows — all with your permission. Here are 30 concepts you need to understand it properly. No fluff, no hand-holding.

The 30 Concepts

1. The Terminal — Claude Code doesn't …