I let an AI coding agent build a 1,300-page site with a $0 server bill
I'm not a full-time developer. For the past few days I've been running an experiment: I describe what I want in plain Korean, and an AI coding agent…
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Triglav: orchestrating Claude Code and Codex agents for long-running work and layered review
AI coding agents can write code. Longer tasks still need coordination and quality control. Someone has to keep track of the objective, settle the op…
Our agent re-asked a question its owner settled 53 days earlier. The ledger that fixed it later defended an outdated answer
Our agent asked its owner a question the owner had settled 53 days earlier. CLAUDE.md already told it to check past decisions first. So we moved eve…
AI Hooks for Claude Code, Cursor, and Codex: Block Secrets Before Agents Can Use Them
TL;DR Instructions are suggestions, not controls : Prompts, AGENTS.md, and CLAUDE.md files only guide an agent, which can reinterpret or route aroun…
Claude Haiku 5.5 in Claude Code: Cut AI Coding Costs 20x
Anthropic released Claude Haiku 5.5 on October 7, 2026, and the headline number is hard to ignore: $0.10 per million input tokens, a tenth of Sonnet…
karasu weekly update: language v2.0, a focus canvas, and 97% fewer SVG elements
karasu is a text modeling language for system architecture, inspired by the C4 model. You describe your system in .krs files and karasu draws the vi…
How I build a product alone with a team of seven Claude Code agents
Someone in a founder group I am part of asked a good question: how do you let several agents work on one product in parallel without them stepping o…
The green lamp lies: ten months growing a harness around Claude Code
Forty-two days on shift. The diesel generators throb under your boots until you stop hearing them. Hundreds of indicator lights on the alarm screens…
AI Coding Agent Security Flaws: Claude Code, Gemini, Codex
An AI coding agent reads files written by other people, runs commands with your privileges, and sees your secrets. AI coding agent security is there…
Our CLAUDE.md and skills named 190 commands: one pointed at a deleted script for 24 days while 28 shape tests passed
Our CLAUDE.md, three rules files, nine skills and one CLI reference contain 707 pnpm <name> references to 190 unique names, checked against 19…
What Is intent.md in Claude Code? A Practical Guide with an Example
You ask Claude Code to build a feature. Minutes later, the code looks reasonable—but it solves a slightly different problem from the one your team h…
Making Claude Code concise without making it dumber: the engineering behind two open-source plugins
Claude Code talks too much, and its status bar tells you nothing. So I built two open-source plugins to fix both — and a third, experimental one tha…
The Second Build Was Mostly Wiring
My first series, Your agent might actually lie to you , is about one shape of GuardianKane: a Claude Code Stop hook that will not let the agent fini…
Open Source MCP Gateways for Claude Code in 2026
TL;DR Connecting Claude Code directly to multiple Model Context Protocol (MCP) servers causes severe token bloat, credential fragmentation, and secu…
4 Days, 3 Wasted Calls Per Run: My Retry Loop Mistook a Quota-Limit Message for a 'Too Short' Article
Last time I wrote about using a probe to decide which jobs to stop first when the quota runs dry . This post is about the problem sitting right next…
One Line of mv Kills the 4x Duplicate Run After Recovery: Making launchd Queue Processing Idempotent
Six months ago my side business made ¥0 a month. This month it's ¥1.2M, running on an autonomous setup built with Claude Code. And here's the thing…
Every step green, queue still growing: 7 cross-posts, 72 hours, and the step that was a browser tab
Our cross-posting pipeline has five steps. Four of them are scheduled jobs, and all four have been green for a week. The fifth is a person pasting i…
How long should CLAUDE.md be? The 200-line target and what it costs you
Originally published at https://aicoding-guide.com . As you keep adding to CLAUDE.md , it gets hard to tell how much detail is too much. Longer feel…
The Terminal Is the New IDE: An Architectural Deep-Dive into Claude Fable 5.1 and Claude Code
The software engineering toolkit is undergoing its most radical transformation since the transition from raw text editors to integrated development…
Claude Code Changed How I Work — An Honest Developer Review
TL;DR: Claude Code is a CLI tool that reads your entire codebase and makes coordinated multi-file changes. It cut my feature development time from 4…
We cut CLAUDE.md to 33KB. Eighteen days later it was 45KB again: what a size cap missed and a structure test caught
We cut our agent's CLAUDE.md from 548KB to 33KB on 2026-08-18 and put a 45KB cap on it. Eighteen days later the file was 45KB again. The cap had wat…
12 Pitfalls I Hit Auto-Logging Claude Code Subagents with a Stop Hook (and How the Numbers Cut My Weekly Cost 15–20%)
I had a gut feeling that my general-purpose subagent was the slow one. Then I measured it: 18 seconds on average, faster than Explore at 22. The rea…
5 Verbal Corrections Didn't Stick, So a 46-Line Stop Hook Made the Mistake Physically Impossible
I corrected the same Claude Code mistake more than five times. It never stuck. Then I replaced the correction with a 46-line shell script, and the m…
67 Lines of Bash That Won't Let an LLM Say Done: A Stop Hook That Reads the Transcript JSONL
Back when I was a student pulling in ¥100k a month, I thought delegating work came down to three things: ask politely, check in on progress, trust t…
19 Audit Nags in One Night: Making a Claude Code Stop Hook Detect Unattended Sessions
My autonomous setup earns its keep precisely because Claude Code starts on its own and finishes on its own. The thing that nearly broke that setup w…
15 AI Coding Prompts for Codex and Claude Code
Code audits, performance work, feature planning, and product research, with an installable workflow skill. Theo shared six ways he uses Astra : code…
I stopped writing prompts. I write the repo.
Originally published on indiecore.net . For about a year I got better at asking. Longer prompts, worked examples, careful phrasing, a private collec…
7 of My 8 Claude Code Agents Had Zero Calls in 30 Days: Finding Dead Agents Automatically
I had eight custom agents defined in Claude Code. When I finally counted, seven of them hadn't been called once in the last 30 days. What keeps my ¥…
Your subagent finished — you just could not hear it: how agent replies actually reach the parent
We spawned two review agents, waited, got nothing, declared them unresponsive, fell back to self-review, and shipped. Hours later — the moment our m…
52 Days of Silent Zeros: The Stop Hook Payload Has No usage Field
I used to be a college student scraping by on ¥100k a month. Then I was laid off. Six months later, after building an autonomous Claude Code environ…