dsh-buy-check

That split-second in the shopping cart where you whisper "do I actually need this?"—only to click checkout three seconds later anyway—dsh-buy-check exists for exactly that moment. It registers a single buy_check tool: pass in the item, your budget, what you already own, and any other relevant parameters, and it returns a concise keep-or-drop verdict grounded in minimalist decision-making, complete with a brief rationale. No ten-point pros-and-cons essay, no hedging; just a clear call and the reason behind it.

Under the hood it is a pure Node implementation with zero network dependencies, so it runs fully offline, responds instantly, and behaves deterministically. Because it is deliberately lightweight, it slots into an existing prompt chain or automation pipeline without introducing external service calls or unexpected side effects.

It is a good fit for frequent online shoppers who want a rules-based speed bump before checkout, and for developers building consumption-aware automation pipelines that need a filtering step. The goal is not "buy a few more options" but "buy one fewer regret."