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Yurukusa

Indie game studio: AI × human collaboration. Creator of Spell Cascade and Azure Flame Dungeon. Non-engineer shipping games, tools, and articles with Claude Code.

Location Japan Joined Joined on  Personal website https://github.com/yurukusa/claude-code-hooks
Extended Thinking Returns Two Blocks, Not One (Anthropic Academy Part 2)

Extended Thinking Returns Two Blocks, Not One (Anthropic Academy Part 2)

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3 min read

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Your CLAUDE.md Rules Aren't Being Enforced. Here's What Actually Works.

Your CLAUDE.md Rules Aren't Being Enforced. Here's What Actually Works.

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3 min read
I Was Caching Wrong This Whole Time (Anthropic Academy Part 1)

I Was Caching Wrong This Whole Time (Anthropic Academy Part 1)

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3 min read
claude-code-hooks Is Now a Plugin (One Command Install)

claude-code-hooks Is Now a Plugin (One Command Install)

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2 min read
We Already Had an Escape Room. It Became Our Game Jam Entry in One Day.

We Already Had an Escape Room. It Became Our Game Jam Entry in One Day.

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5 min read
I Built a Procedural Sokoban Generator in One Day. Here's Why It Kept Making Unsolvable Levels.

I Built a Procedural Sokoban Generator in One Day. Here's Why It Kept Making Unsolvable Levels.

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6 min read
I Distributed My VS Code Extension as a GitHub Action, npm Library, and MCP Server — All in One Session

I Distributed My VS Code Extension as a GitHub Action, npm Library, and MCP Server — All in One Session

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4 min read
50 Lines of Code. 15 Build Names. One Accidental Challenge Mode.

50 Lines of Code. 15 Build Names. One Accidental Challenge Mode.

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4 min read
5 Claude Code Hook Mistakes That Silently Break Your Safety Net

5 Claude Code Hook Mistakes That Silently Break Your Safety Net

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4 min read
I Calculated What My $200/Month AI Subscription Actually Produced. Here's the Math.

I Calculated What My $200/Month AI Subscription Actually Produced. Here's the Math.

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2 min read
What's Your AI Life Level? I Designed a 5-Tier System Based on 50 Days of Real Data.

What's Your AI Life Level? I Designed a 5-Tier System Based on 50 Days of Real Data.

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2 min read
I Built a GitHub Action That Catches the 'Did You Mean to Leave That console.log?' Comment

I Built a GitHub Action That Catches the 'Did You Mean to Leave That console.log?' Comment

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3 min read
Claude Code Bingo: 50 Things That Happen to Everyone Who Uses AI Seriously

Claude Code Bingo: 50 Things That Happen to Everyone Who Uses AI Seriously

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2 min read
10 Claude Code Hooks I Collected From 108 Hours of Autonomous Operation (Now Open Source)

10 Claude Code Hooks I Collected From 108 Hours of Autonomous Operation (Now Open Source)

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5 min read
I Let Claude Code Run Unattended for 108 Hours. Here's Every Accident That Happened.

I Let Claude Code Run Unattended for 108 Hours. Here's Every Accident That Happened.

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3 min read
I Found Out My AI Was Working 2x Longer Than Me — So I Built a Tool to Show It

I Found Out My AI Was Working 2x Longer Than Me — So I Built a Tool to Show It

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3 min read
AI Broke My Back. Literally. Here's What Nobody Tells You About Productivity Tools.

AI Broke My Back. Literally. Here's What Nobody Tells You About Productivity Tools.

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4 min read
Your indie game doesn't need a leaderboard server. Here's what I built instead.

Your indie game doesn't need a leaderboard server. Here's what I built instead.

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4 min read
Your indie game doesn't need a leaderboard server. Here's what I built instead.

Your indie game doesn't need a leaderboard server. Here's what I built instead.

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4 min read
I Made My AI Write Its Own Weekly Report. The Numbers Surprised Me.

I Made My AI Write Its Own Weekly Report. The Numbers Surprised Me.

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3 min read
I Had No Idea How Full My Claude Code Context Window Was. So I Built a Tool.

I Had No Idea How Full My Claude Code Context Window Was. So I Built a Tool.

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2 min read
I Built 35 Free CLI Tools for Claude Code -- Here's What Each One Does

I Built 35 Free CLI Tools for Claude Code -- Here's What Each One Does

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5 min read
I Built a Tool That Roasts Your CLAUDE.md. Mine Got Called an 'S-Tier Micromanager'.

I Built a Tool That Roasts Your CLAUDE.md. Mine Got Called an 'S-Tier Micromanager'.

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3 min read
101 Free Developer Tools. One Portal. Zero Dependencies.

101 Free Developer Tools. One Portal. Zero Dependencies.

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2 min read
What My AI Did While I Slept: Building an Audit Log for Autonomous Claude Code

What My AI Did While I Slept: Building an Audit Log for Autonomous Claude Code

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3 min read
I Built Spotify Wrapped for Claude Code. Here's What 3,400 Sessions Look Like.

I Built Spotify Wrapped for Claude Code. Here's What 3,400 Sessions Look Like.

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4 min read
I Analyzed 14 Real CLAUDE.md Files. Here's What Claude Code Users Actually Configure.

I Analyzed 14 Real CLAUDE.md Files. Here's What Claude Code Users Actually Configure.

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5 min read
I Can't Write Code. I Pay $200/Month for AI. My Life Is Now a Hardcore Game.

I Can't Write Code. I Pay $200/Month for AI. My Life Is Now a Hardcore Game.

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4 min read
I Tracked My Claude Code Usage. 50 Days Straight. My Hip Flexors Have Opinions.

I Tracked My Claude Code Usage. 50 Days Straight. My Hip Flexors Have Opinions.

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3 min read
I Discovered I'd Spent 116 Hours with Claude Code in 50 Days — So I Built a CLI to Track It

I Discovered I'd Spent 116 Hours with Claude Code in 50 Days — So I Built a CLI to Track It

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2 min read
Single Source of Truth: The Concept Non-Engineers Don't Know (But Should)

Single Source of Truth: The Concept Non-Engineers Don't Know (But Should)

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3 min read
We Entered an AI Game Jam. We Ended Up Submitting 3 Games.

We Entered an AI Game Jam. We Ended Up Submitting 3 Games.

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8 min read
I Built a Health Check CLI for Claude Code. My Setup Scored 63 on the First Run.

I Built a Health Check CLI for Claude Code. My Setup Scored 63 on the First Run.

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3 min read
My AI Agent Designed a Game Synergy. Here's the Design Reasoning It Used.

My AI Agent Designed a Game Synergy. Here's the Design Reasoning It Used.

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3 min read
AI Strategy vs Human Intuition: A Bug-Finding Showdown

AI Strategy vs Human Intuition: A Bug-Finding Showdown

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9 min read
The Token-Per-Dollar Math: Running Claude Max for 30 Days

The Token-Per-Dollar Math: Running Claude Max for 30 Days

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10 min read
I Asked 4 AIs to Judge Each Other's Code

I Asked 4 AIs to Judge Each Other's Code

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11 min read
I Built a CLI That Searches 3 Hours of Twitch VODs in 7 Minutes

I Built a CLI That Searches 3 Hours of Twitch VODs in 7 Minutes

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7 min read
I Made an AI Product for $4.99. Then I Got Scared It Was a Scam - So I Tested It

I Made an AI Product for $4.99. Then I Got Scared It Was a Scam - So I Tested It

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11 min read
5 Dangerous Patterns in CLAUDE.md Configs (and a Free Browser Scanner to Detect Them)

5 Dangerous Patterns in CLAUDE.md Configs (and a Free Browser Scanner to Detect Them)

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6 min read
I Built a Free Safety Scanner for Claude Code Setups - Here's Why I Had To

I Built a Free Safety Scanner for Claude Code Setups - Here's Why I Had To

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6 min read
I Added 5 MCP Servers to Claude Code — Here's What Actually Worked (and What Didn't)

I Added 5 MCP Servers to Claude Code — Here's What Actually Worked (and What Didn't)

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7 min read
Claude Code Deleted a User's Entire Home Directory. Here's What I Built to Prevent It.

Claude Code Deleted a User's Entire Home Directory. Here's What I Built to Prevent It.

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7 min read
I Built a Complete Puzzle Game in a Single HTML File (Zero Dependencies)

I Built a Complete Puzzle Game in a Single HTML File (Zero Dependencies)

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4 min read
The 200 Lines of Code That Run Claude Code. The 9,800 Lines That Keep It Safe.

The 200 Lines of Code That Run Claude Code. The 9,800 Lines That Keep It Safe.

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7 min read
I Ran a 5-Agent Game Studio with Claude Code Teams

I Ran a 5-Agent Game Studio with Claude Code Teams

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4 min read
Why Your AI Agent Needs a Quality Gate (Not Just Tests)

Why Your AI Agent Needs a Quality Gate (Not Just Tests)

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11 min read
I Ran a Safety Scan on My Claude Code Setup - Here's What I Found

I Ran a Safety Scan on My Claude Code Setup - Here's What I Found

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4 min read
I Ran a Safety Scan on My Claude Code Setup - Here's What I Found

I Ran a Safety Scan on My Claude Code Setup - Here's What I Found

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4 min read
Generate Your CLAUDE.md in 30 Seconds (Interactive Script)

Generate Your CLAUDE.md in 30 Seconds (Interactive Script)

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3 min read
4 Hooks That Let Claude Code Run Autonomously (With Zero Babysitting)

4 Hooks That Let Claude Code Run Autonomously (With Zero Babysitting)

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3 min read
I Slept While My AI Completed 88 Tasks — Here's What Happened

I Slept While My AI Completed 88 Tasks — Here's What Happened

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11 min read
5 Design Patterns for LLM Agent Teams (From Someone Who Learned Them the Hard Way)

5 Design Patterns for LLM Agent Teams (From Someone Who Learned Them the Hard Way)

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9 min read
Why AI Agents Keep Making the Same Mistakes -- and How We Fixed It

Why AI Agents Keep Making the Same Mistakes -- and How We Fixed It

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7 min read
I Made $2: A Non-Engineer's First Game Sale, Built Entirely with AI

I Made $2: A Non-Engineer's First Game Sale, Built Entirely with AI

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3 min read
I Tried to Automate Marketing Across 10 Platforms with AI — Here's What Worked and What Broke

I Tried to Automate Marketing Across 10 Platforms with AI — Here's What Worked and What Broke

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10 min read
I Built a Multi-Agent AI System Where Claude Instances Manage Each Other — Here's the Architecture

I Built a Multi-Agent AI System Where Claude Instances Manage Each Other — Here's the Architecture

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7 min read
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