kamal

Rotate a JWT signing key the naive way, swap it out and redeploy, and every token issued under the old key stops verifying the instant you deploy. Every logged-in user gets kicked out at once. This is one of those problems that’s obvious in hindsight and easy to miss the first time you actually need … Read more

The Reality Check Every Founder Dreaded When you enter a fast-paced hackathon, the most dangerous thing you can do is fall in love with your first idea. When we joined the RevenueCat Shipathon 2026, our original plan was to build RedFlag—a tool designed around automated risk detection and user alerts. On paper, it sounded like … Read more

You launch an LLM feature. Users like it. Usage grows. Someone adds conversation history. Someone else adds RAG. Then tools. Then retries. Then an evaluator that uses another LLM. A few months later, finance asks a question engineering teams increasingly have to answer: Why is the AI bill growing faster than the product? The first … Read more

Featured image source: Original AI-assisted illustration created for this article. The AI agent demo is convincing. Connect an agent to the CRM. Let it research a prospect, summarize the account, update the deal, draft the follow-up, and alert the sales team. A workflow that once took thirty minutes now appears to take thirty seconds. Then … Read more

Early in my product career, I worked on a tool used by market participants to make daily operational decisions in U.S. electricity markets. One afternoon, a customer called – not because something had crashed, but because the product was behaving slightly differently than expected during a rare market condition. The numbers were technically correct. The … Read more