https://jcentner.com Writing about AI agents, production systems, and what breaks. en-us https://jcentner.com/blog/someone-sold-the-loading-spinner https://jcentner.com/blog/someone-sold-the-loading-spinner kickbacks.ai turned the Claude Code spinner into an ad auction, and a whole economy assembled itself around it in about a day. Notes on the strangest new market in software, and the thing I'm building on top of it. Fri, 12 Jun 2026 00:00:00 GMT https://jcentner.com/blog/agent-permission-model https://jcentner.com/blog/agent-permission-model I gave an AI agent access to a realtor's live inbox, calendar, and files. The boundaries that make that sane live in code and OAuth scopes, not in a sentence the model is asked to respect. Wed, 03 Jun 2026 00:00:00 GMT https://jcentner.com/blog/chrome-dino-three-times https://jcentner.com/blog/chrome-dino-three-times Three rebuilds of the same toy RL problem, eight years apart — and what the fastest, smartest, AI-built one taught me about trusting my own numbers. Sat, 25 Apr 2026 00:00:00 GMT https://jcentner.com/blog/autonomous-copilot-workflow https://jcentner.com/blog/autonomous-copilot-workflow A VS Code workflow that lets Copilot build software unsupervised across long sessions — and the session where I found out my agent had been bending the yardstick. Fri, 17 Apr 2026 00:00:00 GMT