You give your AI coding agent a task. It gets to work. Thirty tool calls later you have code — and it’s not what you needed. The agent understood the words but missed the intent. It made a dozen small decisions that individually seemed reasonable, and collectively built the wrong thing. This isn’t a capability […]

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Spec-driven development treats a structured specification—not the codebase—as the system of record. This post maps who does what when you work that way: from turning product intent into an agent-readable spec, through API contracts and UI rules, to validation that implementation still matches what you wrote down. Table of contents Overview Spec-driven development (SDD) is […]

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