Commentary on X
@gokulr The Product Summary requirement is a smart addition. Giving agents the product shape before scope and acceptance criteria should cut a lot of avoidable interpretation.
7:05 PM · Jul 14, 2026PRODUCTSPEC UPDATE We just tightened the open ProductSpec standard. The question behind the change was simple: If you hand a Product Spec to an AI coding agent, does it know what to build? A lot of Product Specs fail that test. They have a problem statement. They have a hypothesis. They have metrics. They still leave the agent guessing about the actual product shape. So ProductSpec now requires a new (retrospectively obvious) section: Product Summary. The sequence is now: • Problem: who is hurting and why it matters • Hypothesis: what behavior should change • Product Summary: what should exist when the work is done • Scope: what is in, out, and cut • Acceptance Criteria: what must be true before launch • Success Metrics: what proves the product worked after launch Product Summary is intentionally plain English. Example: “A transcript search product lets a researcher paste one video URL, view timestamped transcript lines, search within them, and copy cited passages.” That one sentence gives humans and agents the product shape before they read boundaries and tests. We also tightened Scope. Scope now works best as 3 structured lists: • In • Out • Cut Each item should be a full sentence. Weak: “search video transcript” Better: “Let a user submit a video URL, generate a transcript, and search that transcript by keyword.” Weak: “teams” Better: “Do not build team transcript libraries in this version.” This matters because terse labels force interpretation., while full sentences create boundaries. We also tightened Acceptance Criteria. Acceptance Criteria should be behavioral and testable. Weak: “Search works.” Better: “When a user searches the transcript, the page returns matching passages with timestamps.” A Product Spec should let an engineer, PM, reviewer, or agent say: this passed, or this failed. The open source repo has been updated: • Spec updated • Parser updated • Examples updated • Conformance tests updated • Scope warnings added for terse fragments • Product Summary now required The direction is simple: ProductSpec should be readable by humans and executable by agents. If you are using AI to build software, try converting one real PRD into ProductSpec this week. Make the Product Summary crisp. Rewrite Scope as full-sentence guardrails. Rewrite Acceptance Criteria until each one can be proven true or false. That is when the spec starts doing real work.
6:29 PM · Jul 14, 2026Combined views
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