Sylph – the open-source company brain behind my YC startup
Hello HN! I'm Claire, founder of nao Labs (YC X25). Two months ago I started building a company brain in a git repo. Now I fully run my company with 8 AI agents, 20+ skills, and a self-learning context repo. I built it in a git repo because I refused to lock into any tool - not a context layer, not a specific agent harness. Today I'm open sourcing it so others can build their own. Sylph is the open source version of the company brain I use. It gives you the structure to host your own company context, build skills, create AI agents, and already has a self-learning loop scaffolded. It is a Git…
In plain words
Sylph is an open-source framework for building a company brain using AI agents stored in a Git repository. It enables users to create and manage multiple AI agents with custom skills, maintain shared company context, and implement self-learning loops without vendor lock-in. Designed for startups and teams, Sylph works with various AI models and can be forked and customized through a setup process. The tool structures how organizations share knowledge and automate tasks through coordinated AI agents.
written from the facts on this page · September 2026
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In the maker’s words, at launch
Hello HN! I'm Claire, founder of nao Labs (YC X25). Two months ago I started building a company brain in a git repo. Now I fully run my company with 8 AI agents, 20+ skills, and a self-learning context repo. I built it in a git repo because I refused to lock into any tool - not a context layer, not a specific agent harness. Today I'm open sourcing it so others can build their own. Sylph is the open source version of the company brain I use. It gives you the structure to host your own company context, build skills, create AI agents, and already has a self-learning loop scaffolded. It is a Git repo, with no lock-in on any tool, that can work with any agent: Claude Code, Codex, Cursor. Sylph is made for you to make your own: fork it, run /sylph-setup, and it will build your own company brain according to your own context. Repo: github.com/getnao/sylph How I built it: https://thenewaiorder.substack.com/p/i-built-a-company-brain... Tell me what you think, and if you've got some tips if you built an AI brain for your company too!
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