Evaluator-Optimizer in Claude Code: From Pattern to Skill
How I turned an Agentic AI pattern into a reusable Claude Code skill with evidence-based evaluation.
Claude Code
From zero to pro with Claude Code. In-depth guides and tips you can apply today.
8 articles · 27 tips
Articles
Hooks in Claude Code: A Practical Guide with Real Examples
Practical guide to Claude Code hooks: 3 hook types, 5 essential hooks, advanced patterns and common pitfalls. With copy-paste ready examples.
Claude Code Skills: Build Reusable Workflows with Custom Commands
Skills are the fastest way to create repeatable workflows in Claude Code. A markdown file, a slash command, and predictable steps with human intervention.
Automated Code Review with Claude Code, Playwright, and Notion (MCP)
Learn how to connect Claude Code with Playwright and Notion via MCP to create an automated UI and code review system.
Claude Code Subagents: Practical Guide with Real Agent Configs
Learn to create and manage subagents in Claude Code. Divide complex tasks, avoid context contamination, and scale your AI development.
Claude Code Guide: Professional Setup, Configuration & Workflows (2026)
The definitive Claude Code guide (2026). Installation, CLAUDE.md configuration, hooks, skills, subagents, and professional workflows for developers.
MCP in Claude Code: The Practical Setup Guide (2026)
Understand what the Model Context Protocol (MCP) is and how to use it in Claude Code to connect your LLM with real tools (GitHub, Linear, Databases).
Quick Tips
Ask Questions While Claude Code Is Working with /btw
Use /btw to ask quick questions while Claude Code is working. No interruption, no history pollution.
Create Custom Agents in Claude Code with --agent
Create specialized agents as Markdown files and launch sessions with claude --agent. Each agent has its own system prompt, tools, and model.
Get Notified When Claude Code Finishes (Only When You're Not Looking)
A Stop hook + a script that checks the focused app = sound only when you're in another app. Zero annoying notifications.
Claude Code Can Work While You Sleep
With the -p flag, Claude Code becomes a headless agent you can schedule with cron. Combined with --allowedTools, you get autonomous AI automation.
Did You Know Claude Code Remembers Between Conversations?
Claude Code writes notes about your project as you work and reads them at the start of every session — remembering build commands, debugging patterns, and architecture decisions.
Your CLAUDE.md Is Full of Junk — Here's How to Fix It
Most CLAUDE.md files are packed with information Claude can already infer. Learn to document what actually matters: business decisions, team conventions, and the why behind every rule.
Stop Wasting Tokens: Pick the Right Model in Claude Code
Use opusplan in Claude Code: Opus for planning, Sonnet for execution, Haiku for exploring. Stop using the frontier model for everything.
When Does Claude Code Load Each Feature (and What It Costs)
Learn when each Claude Code feature loads into context — CLAUDE.md, Skills, MCP, Subagents, and Hooks — and how to save tokens from the start.
Claude Code Desktop: 5 Features Worth Leaving the Terminal For
The 5 exclusive features of Claude Code Desktop over the CLI: visual diffs, parallel sessions, embedded preview, PR monitoring, and built-in connectors.
The Agentic AI Pattern That Always Keeps You Honest
Build the Evaluator-Optimizer pattern as an inline skill in Claude Code. One LLM generates, another evaluates every claim against real evidence.
4 Agentic AI Patterns You Already Use in Claude Code — and One You Don't
Every agentic pattern from Anthropic's guide maps to a Claude Code primitive. Here's the complete reference.
Claude Code Hooks — Automate Your Workflow
Hooks are commands that run automatically at specific points in Claude Code's lifecycle. Unlike CLAUDE.md instructions, hooks are deterministic: if the condition is met, they always execute.