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The open-source company brain. Run your entire company with AI agents, skills, and a self-improving context.

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

Name: Sylph – the open-source company brain behind my YC startup
Availability: InStock
Author: ClaireGz

by ClaireGz·May 22, 2026·10 points·3 comments

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AI Analysis

●●●BangerBig BrainShip It

Git diffs drive agent self-learning without vector DBs or fine-tuning.

Strengths

•Self-learning loop rewrites skill rules based on user edits automatically.
•Agent-agnostic structure works with Cursor, Claude Code, or Codex.
•Git-native context avoids vendor lock-in and external databases.

Weaknesses

•Relies on disciplined commit hygiene to maintain context quality.
•No built-in UI for non-technical team members to manage agents.

Post Description

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!