A local-first operating layer for founders, on Claude Code. Six markdown files run your business; the AI reads them every session. Free, MIT, no lock-in.
Latest release v1.56.0 — v1.56.0 - the progress card · 24 Oct 2026
4 files for Claude Code, Codex, OpenCode and Gemini CLI: FounderOS, FounderOS AGENTS.md, FounderOS CLAUDE.md, FounderOS GEMINI.md — 14,530 tokens loaded in every session.
AGENTS.md A 2,233 tok CLAUDE.md A 10,414 tok GEMINI.md A 1,883 tok .claude/settings.json A — These files are ARCASSystems/FounderOS's own configuration — they tell Claude Code, Codex, OpenCode 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.