Two weeks ago I asked what the hardest part of choosing tools was. The answer surprised me.

I expected people to say "there are too many options" or "the catalog isn't big enough." Almost nobody did.

What kept coming up instead was confidence. Finding tools is easy now. The hard part is trusting a recommendation enough to actually stop researching and start building. One builder pointed out the tools that survive aren't the ones with the most features, they're the ones with the fastest time to first useful output. Another asked how we'd handle the cases where there's no clean "right" answer, just tradeoffs you don't understand yet.

That's the gap we went after.

So Build doesn't just hand you a stack anymore. For every tool it picks, it now tells you why — what you're trading off (speed vs. flexibility, lower cost vs. more control), and where that choice will start to hurt later, whether that's a pricing cliff or a scaling bottleneck. The goal is not give you "this is the best tool," but "here's why this fits your situation, and here's the moment you'll want to revisit it."

To help get you building ASAP, it now generates a detailed starting prompt specific to your tooling stack, plus a short plan (stack.md) to keep in your project so your AI coding agent (Claude Code, Codex etc) stays consistent instead of drifting into something different every session.

Still early, still rough in places. But it feels much closer to the thing people were actually asking for; less directory, more "what should I do, and why."

Same question as last time: when you're choosing a stack, what would actually make you confident enough to commit? What's the thing you wish someone would just tell you straight?