> a spec graph the agent actually reads

Nope. The agent doesn't actually read, and never will. That is, it may pull it into context randomly, and then purge it from context randomly. But any tool/harness/wrapper that claims that agents actually do something is selling you a bridge.

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Also, the entire page somehow manages present a condensed example of the worst marketing + the worst LLM-adjacent speech in a few short paragraphs.

Of course it depends on the type of software you’re writing and just how strict it needs to be, but in general, I find that you need the “spec-driven development” paradigm less now than you did maybe 6 months ago. Older specs really begin to become noise and context pollutants, plus the model is just going to explore the codebase to get a current state of truth regardless.