Welcome to DevDiary

Welcome to DevDiary.uk — my public engineering diary. This is where I document everything I build, everything I learn, and everything that breaks along the way.

What This Is

A developer’s diary focused on building authority through real work. No abstract theory, no fluff. Every post is rooted in a real build, a real integration, or a real debugging session. I ship first, then write about what I learned.

What You’ll Find Here

• Claude Code & AI Agent Development — Custom agents, ~/.claude/ configuration, MCP servers, and agentic workflow patterns. Start with the 10-Minute Quick Start Setup or dive into the Complete Mastery Guide
• AI Productivity Systems — Personal OS architecture, knowledge compounding, auto-dreaming, and moving from chatbot user to agent operator. See Build Your AI Chief of Staff for the full blueprint
• Modern Agentic Systems — Phase-gated agents, batch-and-specialize patterns, self-learning pipelines. Explore Arc: The Self-Learning ERP Agent and the MIS v2 LLM Architecture
• Web Development & Architecture — Astro, Supabase, Node.js, TypeScript — the real stack decisions behind production systems
• The opencode Ecosystem — Custom agents, skills, SOUL.md philosophy, and integration patterns for LLM-powered development

Who This Is For

Developers who want to move beyond prompting and into operating. If you’re already comfortable with a terminal and curious about what happens when you treat AI as an infrastructure layer rather than a chat interface — you’re in the right place.

Get Involved

Follow @Hkim08 for updates, or subscribe via RSS.

New posts every week. Real builds. Real insights. No filler.