Show HN: Sylph – the open-source company brain behind my YC startup

Show HN (score: 6)
Found: May 22, 2026
ID: 4709

Description

Other
Show HN: 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 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!

More from Show

Show HN: Pablo – a Chrome extension that copies UI from any website

Show HN: Pablo – a Chrome extension that copies UI from any website Pablo is a Chrome extension that copies the HTML and CSS behind any element you hover.<p>It captures computed styles, fonts (with @font-face and Google Fonts links), CSS keyframes, and animation props from GSAP and Framer Motion. The output is structured so it pastes cleanly into Claude Code, Cursor, or Codex when you want to rebuild a component in your own stack.<p>Manifest v3, no host permissions, no backend. Free.<p><a href="https:&#x2F;&#x2F;usepablo.dev" rel="nofollow">https:&#x2F;&#x2F;usepablo.dev</a><p>Happy to answer questions about how the extraction works, and would love to hear about sites where the output breaks.

No other tools from this source yet.