Show HN: Whiteboard Defense – defend decisions of any system you've shipped

Category: devtools

Tags: ai-agents, code-review, documentation, developer-tools, claude-code, codex

Score: 6.5/10 (Innovation: 7, Technical: 5, Documentation: 8, Utility: 6)

Whiteboard Defense is a skill/plugin for AI coding agents (Claude Code, Codex, OpenCode) that after substantial work generates a brief explaining how the built system works, tagging each decision as USER, INFERRED, DEFAULT, or GUESS. It aims to help developers defend architectural choices at a whiteboard, especially surfacing agent habits/defaults. The concept is novel and well-documented with honest limitations, though it relies on probabilistic agent cooperation and a community-driven defaults catalogue.

Target audience: backend devs, full-stack devs, engineering leads, anyone using AI coding agents

Repository: https://github.com/avestura/whiteboard-defense · JavaScript · MIT · 5 stars

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