Stop AI coding agents from adding dependency and build ownership without a decision note.
Latest release v0.4.0 · 28 Jun 2026
4 files for GitHub Copilot, Codex, OpenCode, Claude Code and Gemini CLI: buy-vs-build copilot-instructions.md, buy-vs-build AGENTS.md, buy-vs-build CLAUDE.md, buy-vs-build GEMINI.md — 2,240 tokens loaded in every session.
.github/copilot-instructions.md A 560 tok AGENTS.md A 560 tok CLAUDE.md A 560 tok GEMINI.md A 560 tok These files are stdin/buy-vs-build's own configuration — they tell GitHub Copilot, Codex, OpenCode, Claude Code and Gemini CLI how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.