A local, GitHub-centric operating contract that makes a collection of independent repositories behave like one understandable, verifiably ready workspace for humans and coding agents.
Latest release v1.10.5 — Base v1.10.5 · 14 Oct 2026
2 files for GitHub Copilot, Codex and OpenCode: base copilot-instructions.md, base AGENTS.md — 1,627 tokens loaded in every session.
.github/copilot-instructions.md A 541 tok AGENTS.md A 1,086 tok These files are basefoundry/base's own configuration — they tell GitHub Copilot, Codex and OpenCode 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.