Blog

Automated GCP Infrastructure Auditing with gcloud MCP

Learn how to automatically detect security vulnerabilities and configuration issues in GCP infrastructure using AI agents and gcloud MCP.

SEO/AEO in the LLM Era: B2B SaaS Optimization Roadmap

From SEO foundation to AEO strategy: real implementation case study with measurable results from the Agent Effi Flow project

Individual Developer's AI SaaS Journey: Production Launch in 3 Days

Real-world experience building a B2B AI OCR service with SvelteKit, Supabase, and Google Gemini API. Tech stack rationale, implementation details, and business strategy from a solo developer's perspective.

Building Serverless AI Batch Systems with Terraform

A practical guide to building cost-effective AI batch processing infrastructure using API Gateway, Lambda, and ECS Fargate

Automating Page E2E Testing with Claude Code

Build an automated page quality verification system for web publishers. Test 8 quality items with a single command and receive improvement suggestions.

Google Code Wiki: Complete Guide to AI-Powered Code Documentation

Explore Google Code Wiki features, usage guide, and Gemini-based automatic documentation system in detail.

Complete Guide to My MCP Server Toolkit

Maximize Claude Code productivity with 7 essential MCP servers. Learn Serena, Context7, Sequential Thinking setup and real-world usage patterns

Optimizing AI Agent Systems with the Deep Agents Paradigm

A practical guide to analyzing Deep Agents concepts from LangChain and Philipp Schmid and optimizing agent architecture

Claude Code CLI Migration Guide: Comparing Copilot, Gemini, and Codex

Learn how to migrate from Claude Code to GitHub Copilot CLI, Gemini CLI, or Codex CLI with practical guidance on choosing the right tool for your situation

jangwook.net 45-Day Growth Report: 7 Insights from 750 Visitors

Comprehensive GA4 analysis of blog's first 45 days - 44.3% organic search achieved, SEO optimization ROI proven, traffic spike investigation, 91% bounce rate crisis on English homepage

MCP Code Execution in Practice: Improving Claude Code Project Structure

Learn how to apply Anthropic's MCP Code Execution patterns to real projects with practical examples of directory structure improvements and security configurations.

Anthropic's Code Execution with MCP: A Paradigm Shift in AI Tool Integration

Explore how Anthropic's Code Execution with MCP achieves 98.7% token reduction and 60% faster execution through sandboxed code-based tool orchestration.

Adding Chinese Support to Your Blog: A Practical Guide to Multilingual Website Expansion

Experience report on adding Chinese support to 40 posts. Parallel agent processing to update 120 files, SEO optimization, automation strategies - everything about expanding an Astro multilingual blog

EffiFlow Part 3: Real-World Improvements in 38 Minutes - 99% Stability and 100% Completion

Practical implementation of Top 3 Quick Wins. Achieving 100% completion and 99% stability with 38 minutes of investment and ROI analysis

EffiFlow Part 2: Skills Auto-Discovery and 58% Token Reduction Caching

Skills auto-discovery mechanism and Commands integration. Achieving 58% token reduction through caching strategy

EffiFlow Analysis: 71% Cost Reduction with Metadata Architecture

Blog automation with 17 Agents and metadata-first architecture. Case study achieving 60-70% token reduction and full automation

Build a RAG System in 5 Minutes with Google Gemini File Search

A practical guide to building document search and Q&A systems using Gemini File Search Tool announced in November 2025, without complex RAG pipelines. Dramatically reduce development time with fully-managed RAG.

Prompt Engineering Guide: 10x Performance Boost for AI Agents

Research-backed prompt engineering techniques applied to 17 Claude Code agents, with measurable results and practical implementation guide.

Automate Blog Publishing with n8n RSS Feed and AI Agents

Learn how to build a complete automation pipeline from blog publishing to social media with GitHub Actions, RSS feeds, and n8n workflows powered by AI.

Figma MCP to Web Components: Research-Based Design System Automation

Comprehensive guide on generating web components from Figma using MCP and implementing continuous design-to-code synchronization with vanilla JavaScript.

Applying Verbalized Sampling to Claude Code Agents: 1.6〜2.1x LLM Diversity Boost

A practical guide to applying Verbalized Sampling technique to Claude Code agents, achieving 2.0x prompt diversity, 1.8x content diversity, and 1.6x writing style diversity. Complete with 4 agent modification histories, parameter tuning, and cost analysis.

Verbalized Sampling: A Training-Free Prompting Technique to Restore LLM Diversity

Verbalized Sampling tackles mode collapse after alignment by prompting models to verbalize probability distributions, achieving 1.6-2.1x diversity gains without retraining

3-Week Analytics Report: 1266% Organic Search Explosion & 20-Post Publishing Sprint

2025-10-15〜11-04 GA4 analysis, organic search leap from 4.3% to 54.4%, 20 new posts published, South Korea emerges as #1 country - transparently sharing blog growth journey

Data-Driven Product Decisions: Analytics Framework for PMs

Master data-driven product decisions using analytics frameworks, key metrics, and A/B testing best practices. Learn from top PMs at Netflix, Spotify, and Amazon.

Analyzing Team Communication with Slack MCP and AI Agents

Learn how to leverage Slack MCP for automated team communication analysis, sentiment tracking, and actionable insights using Claude AI and Model Context Protocol.

Building a Modern Project Management Stack: Notion, Backlog, Slack & Claude

Learn how to standardize project management with Notion, Backlog, Slack, and Claude Code to boost team productivity by 50% and project success rates by 80%.

Recommendation System V3: 100% Build Performance Improvement with Frontmatter-Embedded Architecture

Removing the bloated recommendations.json and embedding recommendation data directly in frontmatter eliminates runtime file I/O by 100%. Here is our V3 system journey and results.

Streamlining Project Manager Workflows with LLMs: 3x Productivity Boost with AI

A practical guide to automating project management tasks and maximizing productivity using cutting-edge LLM tools like ChatGPT, Claude, and Gemini. Step-by-step walkthrough from daily task automation to ROI measurement.

Automating Large-Scale Page Testing with Claude Code in Parallel

Practical guide to running web page migration tests 5-8x faster with Claude Code agents and Playwright parallel execution

Standardizing Web Page Migration with LLMs: A Comprehensive Guide

Learn how to automate web page migration using LLMs, Web Components, and comprehensive testing frameworks. Discover proven strategies from Google, Airbnb, and industry leaders.

Building Automated Code Review Systems with Claude Code Hooks

Complete guide from hook-based coding rule configuration to CI/CD integration for production-ready automated review processes

Building an MCP Server for BigQuery with Prefix Filtering

Learn how to build a Model Context Protocol server for BigQuery with dataset prefix filtering, including architecture, implementation, and security best practices.

Auto-Coding with Jules: The Complete Guide to Google's Autonomous AI Coding Agent

Learn how to automate GitHub issue resolution and PR creation with Jules, Google's groundbreaking AI coding agent powered by Gemini 2.5 Pro

LangGraph Multi-Agent Systems: Production-Grade Orchestration

Build stateful multi-agent AI systems with LangGraph. Learn graph-based orchestration, deployment patterns, and real-world use cases from LinkedIn and Uber.

Playwright + AI: Building Automated E2E Tests

Complete guide to E2E test automation with Playwright and AI Codegen. TypeScript implementation, GitHub Actions integration, and visual regression testing for production-ready test suites

Analyzing Blog Revisit Intent with SSR Methodology

Experimental results and statistical analysis of 225 evaluations using LLM-based Semantic Similarity Rating. Validated high reliability with ICC 0.83 and visualizations.

AI Predicts Consumer Behavior: Semantic Similarity Rating Method

Revolutionary LLM-based synthetic consumer research achieves 90% human reliability using SSR methodology

Claude Skills Complete Guide: From Project Implementation to Practical Know-How

A practical guide documenting the journey from introducing Claude Agent Skills to real-world implementation, including trials, errors, and achievements. Learn how to specialize AI agents through folder-based modularization.

OpenAI AgentKit Complete Guide Part 2: Production Deployment and Advanced Patterns

From enterprise-grade multi-agent system design to production deployment, master AgentKit implementation in real-world scenarios

OpenAI AgentKit Complete Guide Part 1: Core Concepts and Getting Started

From core concepts to hands-on tutorials: everything you need to know about OpenAI AgentKit announced in October 2025

What Happens When You Assign Gender and Personas to AI Agents?

Psychological effects and optimal design strategies for AI agent personas revealed through 120+ research studies and industry best practices

Recommendation System Optimization: From 78K Tokens to Zero

How we eliminated 100% of token usage and reduced execution time by 99% in our content recommendation system through metadata-based algorithmic optimization.

Self-Healing AI Systems: Building Agents That Automatically Fix Bugs Without Human Intervention

Complete guide to Self-Healing Systems deployed by GitHub, Google, and Netflix. Full implementation from error detection to automatic patching with LangGraph

AI Agent Collaboration Patterns: Building Full-Stack Apps with 5 Specialized Agents

Orchestrate Architecture, Coding, Testing, Security, and DevOps agents to build production-grade applications

Specification-Driven Development in the AI Era: Writing Code with Markdown

Complete guide to systematic AI development with GitHub Spec Kit. Move beyond "Vibe Coding" to build scalable, maintainable production code that truly works.

First Week Analysis Report: A Journey Begun with 31 Passionate Early Adopters

GA4 data analysis, content performance, and improvement impact one week after blog launch - transparently sharing our blog growth journey (2025-10-07~10-14)

Implementing Scheduled Publishing on Static Sites: Automating Astro + GitHub Actions

A practical guide to implementing WordPress-like scheduled post publishing on static blogs using Astro and GitHub Pages. Complete automation with pubDate filtering and scheduled workflows

Building an Intelligent Content Recommendation System with Claude LLM

A comprehensive guide to building an AI-powered blog recommendation system that goes beyond simple tag matching with semantic understanding

Automate Web Performance Optimization with Chrome DevTools MCP

Complete guide to Chrome DevTools MCP: AI assistants measure and optimize performance with real browser data. From Core Web Vitals automation to practical workflows.

Building AI Agent Systems: A Practical Guide to Automation Pipelines with Notion API MCP and Claude Code

Complete guide to building production-ready AI agent automation systems using Model Context Protocol (MCP) and Claude Code with Notion integration. Expert-verified tutorial covering capabilities, limitations, benefits, and best practices from SEO and content management perspectives.

Automating Semi-Annual Presentation Creation with AI: From 60 Hours to 10

Learn how we reduced semi-annual reporting preparation from over 60 hours to just 10 hours using AI agent systems and automation tools in this practical implementation guide.

Automating Large-Scale Website Page Generation with Claude Code: Parts Library and SubAgent Parallel Processing

A practical case study of auto-generating 31 HTML pages using a parts library-based approach. Complete guide covering CSV metadata management, SubAgent parallel processing, and two-phase quality validation.

Claude Code Best Practices: Maximizing Developer Productivity with AI

A comprehensive guide to optimizing Claude Code setup based on Anthropic official best practices, with real-world implementation insights.

jangwook.net Blog Launch Analysis Report: The Beginning of a Data-Driven Technical Blog

Blog launch GA4 data analysis, practical MCP query examples, and 3-month growth strategy - transparently sharing the journey of starting a technical blog

Automating Blog Analytics with Google Analytics MCP and AI Agents

Learn how to automate blog analytics and make data-driven decisions using MCP and AI agents

Blog Automation with LLM and Claude Code - The Future of Content Creation

Complete guide to automating your blog with Claude Code and 11 specialized AI agents. From prompt engineering to MCP integration, multi-language support, and image generation - a practical tutorial anyone can follow.