AI forgets what it built

Claude will build you a working system today and remember nothing about it next week.

The chat that built it closes, and every decision made along the way closes with it. That's fine, right up until something breaks and nobody can say how the thing works.

I wish someone had told me this when I started building with AI. Whether it's a website, an internal tool or a full app, one habit makes your life a hundred times easier.

After every session, get your AI to create or update a build log.

A build log is a plain document where the AI writes down what it built, how it works, and why it made each choice. Think of the notes a good doctor leaves behind, so the next doctor isn't guessing at what's already been diagnosed.

That document outlives the chat that wrote it.

Hand it to a fresh session, a different AI, or whoever takes over from you, and they pick up exactly where the last one left off. Troubleshooting no longer means starting from scratch, because the new session reads the log and knows the system as well as the one that built it.

I do this on everything I build now, and the log is the first thing I open when a system misbehaves.

A system nobody can explain is a liability, whether a person built it or an AI did.

Next time you ask Claude to build anything, make the first line of your request: keep a build log as you go.

One sentence in the brief, and everything you build stays explainable.