HERO names the four shapes coding agents over-defend in, and ships a paste-in contract.

wanshuiyin/HERO-Anti-OverDefense went from creation to 68 stars in a single day. HERO is Hashing, Edge cases, Rubrics, Overbuild, and the claim is that agent over-engineering isn't diffuse but falls into four recognizable shapes suppressible with a portable prompt contract across Claude Code, Codex, Antigravity, Cursor, Copilot, Windsurf, and Gemini CLI. Markdown-only, no code. That's the trend itself: the highest-velocity agent artifacts this week are constraint documents distributed as plain text with no install step to gate adoption. neuroarxiv fits the same pattern from a different angle, forcing Claude to check arXiv prior art before designing an architecture.