2026年版：AIエージェントに渡すNext.js用ルールファイルの実例と書き方
なぜルールファイルが必要なのか Claude CodeやCursor、GitHub Copilot...
Tutorials
【実体験】Vercel/Supabase無料枠で月数百円に抑える構成と落とし穴
Vercel/Supabase無料枠で月数百円に抑える構成と落とし穴 結論 Next.js + Supabase...
Why I ditched regex scrapers for an LLM parser (and when you shouldn't)
Last month I needed to scrape product details from 30 different e-commerce sites. Each site used its...
Valta: We built hard spending limits that AI agents cannot break
Hey Dev, I built the first tool that gives developers hard spending limits inside AI agents — instead...
Quanto guideline um agente de código precisa?
Disclaimer Este texto foi inicialmente concebido pela IA Generativa em função da...
introducing gh-aw-fleet
I started using GitHub Agentic Workflows a couple months ago: small Claude/Copilot agents that run...
The Model Context Protocol (MCP): what it is and how to build a server
A practical walkthrough of the Model Context Protocol — what it is, how JSON-RPC 2.0 transports work, and how to build an MCP server in Python with FastMCP.
I wasted $43 rebuilding a Vectorize index the wrong way — here's the $5.50 fix
Cloudflare Vectorize 인덱스를 production에서 재구성할 때 실제로 발생한 비용, 다운타임, 쿼리 드랍을 실측한 운영 기록. 블루/그린 전략 없이 in-place rebuild를 시도했다가 깨진 이야기.
Your AI agent has amnesia. Here's the file architecture I use to fix it.
Most agents I build start life the same way: capable, fast, and completely amnesiac. They have no...
When Regex Fails: My Journey to AI-Powered Data Extraction
I spent three hours the other day staring at a regular expression that was supposed to extract phone...
I tracked 34 'dead opens' in Obsidian over 3 weeks. That's why I switched to Tana.
I ran both tools in parallel for 6 weeks. Here's the honest breakdown of what Tana does better and what I genuinely miss.
Extracting structured data from messy text: what worked for me
I spent a good two weeks last quarter building an invoice extraction pipeline for our accounting...
Catching the failure is the easy part
The last post I wrote ended on a loose thread I have not been able to stop pulling at. Almost every...
I tried 5 ways to build a Q&A system over my docs — here's what worked
Last month, I needed a way to ask natural-language questions about a pile of internal documentation....
500 portadas distintas de un solo modelo de $0.04: arte de portada con IA, consistente con la marca, en un generador económico
La lección de cabecera: en un modelo económico, la calidad no la consigues escribiendo un mejor...
My morning BTC checklist uses three agents — here's what it actually said the day BTC bottomed
BTC Max Profit Engine is a 4-file Python pipeline that runs three specialized agents in parallel, weights their scores, and emails me one decision before breakfast. Here's the work...
I built a region-survivable system by directing an AI agent. An append-only decision log kept it coherent.
Most of Quorum's code was written by directing an AI coding agent. The discipline that turned that speed into a correct multi-region database application was an append-only archite...
hosted coding agents make observability a product feature
The laptop was never the interesting part of coding agents. It was just the first convenient runtime. Your laptop has the repository, the shell, the secret
The most underrated feature in a website AI assistant: saying "I don't know"
A lot of teams are bolting a chatbot onto their marketing site this year. Most of them optimize for...
Reputation You Can Mint for Free Is Not Reputation
Sybil resistance is not a scoring problem. It's a pricing problem. Every few months someone...
A Cognitive Benchmark for Code-RAG Retrieval: Part 2 — Why Model Rankings Depend on the Pipeline
How embedding models, chunking, retrieval modes, and query phrasing jointly determine Code-RAG quality.
The spec is in the wrong place
My day job is at a large tech company. Hundreds of engineering teams, and every one of them is...
@hazeljs/agent 1.0.1: Production Hardening for Real Deployments
We are shipping @hazeljs/agent 1.0.1 — a patch release focused on operational durability, resilience...
I built an AI code reviewer as a GitHub Action — here's what I learned
If you've spent time on software engineering teams, you know pull request reviews are the ultimate...