Why it's useful
Plays the grumpy senior dev who replaces fifty lines with one: reuse what's there, use the standard library, skip what you don't need. It's mostly the old YAGNI rule written up as a prompt. Installs as a plugin for Claude Code or Codex, or paste the AGENTS.md into any agent. Only install it from the official repo.
What it needs
Claude Code, Codex or any agent that reads AGENTS.md
Image: Dietrich Gebert. Ponytail belongs to Dietrich Gebert; we just think it's worth knowing about.
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