Posts by Vinh Nguyen

@Vinh Nguyen

Vinh Nguyen

Founder @ Stewie | Product Truth Layer for AI-native teams
Ho Chi Minh City, Vietnam stewie.sh Joined April 2026
785 Points15 Badges3 Connections4 Followers10 Following

Posts by Vinh Nguyen

Posted in AI group
Vinh Nguyen in Articles 5 min read
> TL;DR: Compaction is lossy by design, and the loss compounds across passes. After a few compactions, your agent remembers the gist but loses the why — and you become its memory, re-typing the same constraints week after week. agent-crystallizehttps...
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Vinh Nguyen in Articles 4 min read
> TL;DR: Agents "violate product rules" mostly because they can't see which behaviors are confirmed decisions vs. temporary implementation details. Modern harnesses AGENTS.md, memory, specs, monitors steer code execution, but they still don't provide...
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Vinh Nguyen in Articles 6 min read
> TL;DR: AI-safe engineering needs three durable, machine-readable layers: a behavior layer what the product must do, a decisions layer why the team chose it, and an execution layer what's actually running and whether it matches. Execution has mature...
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Vinh Nguyen in Articles 4 min read
> TL;DR: Vibe coding ships fast, but it often fails to preserve the reasoning behind product behaviors — and agents refactoring later will “reasonably” change things users rely on. A lightweight behavior spec .pbc.md makes “what must happen / must no...
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Vinh Nguyen in Articles 6 min read
> TL;DR: CLAUDE.md and AGENTS.md are excellent at steering how agents write code. They were never designed to capture what the product promises to do. When agents refactor, extend, or integrate code, they need a behavior spec — not more workflow inst...
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Vinh Nguyen in Articles 5 min read
> TL;DR: The agent ecosystem is rapidly improving harnesses, memory, and workflow rules — but agents still lack product truth: which behaviors are protected promises vs. incidental implementation. This post argues that missing layer is a durable beha...
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