CLAUDE-CODE
How I built an AI agent with Claude Code in 20 minutes
A complete walkthrough: from zero to a working agent using only the Claude Code CLI. No frameworks, no magic.
R
Roi Gomez
CLAUDE & CLAUDE CODE EXPERT
Master Claude.
Build faster.
In-depth guides on Claude API, Claude Code, and AI-powered workflows. No fluff. Only what works.
10 ARTICLES
ES/EN BILINGUAL
2026 UPDATED
import anthropic
client = anthropic.Anthropic()
response = client.messages.create(
model="claude-sonnet-4-6",
max_tokens=1024,
tools=[get_weather, search_web],
messages=[{
"role": "user",
"content": user_input
}]
)
# Claude decides which tool to call
if response.stop_reason == "tool_use":
result = handle_tool(response)
send_result_back(result)▋Latest articles View all →
CLAUDE-CODE
CLAUDE.md: best practices for configuring your agent
How to write an effective CLAUDE.md that makes Claude Code more useful and predictable in your project. Structure, examples, and common mistakes.
CLAUDE-API
Prompt caching: how to cut Claude API costs by 80%
The most underused feature in Anthropic's API. How it works, when to use it, and how much I saved.
MCP
Build your first MCP server in TypeScript
Model Context Protocol explained with real code. From zero to a working TypeScript server with the tools you need.
CLAUDE-API
Extended thinking in Claude: when and how to use deep reasoning
Extended thinking lets Claude show its reasoning process before responding. Practical guide to enabling it and getting the most from it on complex tasks.
AI-AGENTS
Agent orchestration: patterns that scale
How to design multi-agent systems with Claude that don't spiral out of control. Real coordination and handoff patterns.
PROMPT-ENGINEERING
The 5 prompting techniques that actually matter
No empty theory. These are the techniques that changed results in real projects with Claude.
DEV-PRODUCTIVITY
My Claude Code workflow after 3 months
What I changed, what I kept, and what I learned using Claude Code as my primary development tool.
CLAUDE-CODE
Hooks in Claude Code: automate guardrails with shell commands
How to use hooks in Claude Code to run commands before or after each agent action. Full control over what Claude does in your project.
CLAUDE-API
Tool use in Claude API: practical guide with real examples
How to implement function calling in Claude API. From tool definition to handling responses in production.
What they say
"Roi helped us integrate Claude API into our product in record time. The cost savings with prompt caching were immediate."
"The Claude Code workshop transformed how our dev team works. 3x productivity in the first weeks."
"The multi-agent system Roi designed reduced our content pipeline processing time from 4 hours to 20 minutes."