The Diary
15 articles on AI agents, Python, Claude Code, machine learning, and web architecture. Written while shipping real things.
Claude Code: The Complete Mastery Guide (2026)
Master Claude Code CLI — Anthropic's AI coding agent. Setup, MCP servers, custom personas, memory, hooks, team workflows, and real-world benchmarks.
OpenClaw 2026: Self-Hosted AI Gateway Setup from Scratch
Install and harden OpenClaw 2026 — the self-hosted gateway connecting Claude to WhatsApp, Telegram, Discord, and 50+ channels with persistent memory.
How I Built a Context Manager for Multi-Agent LLM Systems
I built a context manager that solved collapse in 30+ turn multi-agent sessions. The 4-tier architecture tested on Claude, GPT-4o, and Gemini 1.5 Pro in 2026.
I Built a Spreadsheet That Emails Me Every Morning — for $47
48% of proposals get no buyer engagement in 2026. I built a 291-formula pipeline tracker — here's the build story.
I Packaged a Local SEO Agency's Workflow Into a Claude OS
How I built the Local SEO Dominance OS: 12 Claude skills, 3 automated workflows, and 6 schema templates that replace $400/month in fragmented tools as of 2026.
The Developer Behind DevDiary
I'm Rachid — solo dev building AI tools, ERPs, and 7 Gumroad products from a Termux phone and Contabo VPS. I've shipped 12 client projects since 2025.
Building AI Agent Systems in 2026: Multi-Agent Orchestration, Memory, and Tool Calling
Build AI agent systems in 2026. Multi-agent orchestration, SQLite vector memory, tool calling, and state management for production agent architectures.
What I Use: Dev Hardware, Software, and Stack in 2026
The exact hardware, languages, and tools that power DevDiary.uk — Termux on Android, Contabo VPS, Node.js/TypeScript, Python, and SQLite — current as of 2026.
Freelance Rate Calculator — Stop Guessing What to Charge
A single-file HTML tool that turns your income goals and work style into hourly rates, day rates, and project quotes. Sliders update live. No signup needed.