I design complete AI operating systems for solopreneurs β€” and document the process so you can replicate the architecture, not copy the result.

I previously founded Levisoft, a software agency β€” real clients, real shipping, and the classic agency ceiling: my time was the product. So I went the other way: one person, systems instead of headcount, AI as the team.

Now I run my whole business from a single structured vault of plain files β€” strategy, finances, content, operations β€” with AI agents that can actually read it. Not as a productivity aesthetic: as the operating infrastructure of a real company. This publication is me building that in public.

What I write about:

Systems & second brain β€” the Obsidian operating structure, shown working on a real business. Practical AI β€” Claude skills, agents, and n8n automations that do jobs, with the build documented. Solo operating β€” strategy, pricing, and the honest numbers of building alone. Vibe coding β€” shipping real tools without a CS degree or a team.

Everything I publish starts from work I actually did. If I didn’t build it, run it, or break it, I don’t write about it.

What I’m building, in public:

Indexed Brain (indexedbrain.com) β€” my operating vault and living Operating Maps, packaged for DIY builders. Oknola (oknola.com) β€” the software version: an AI-native OS for solopreneurs, on files you own. This newsletter is where both get documented β€” wins, flops, and revenue included.

Follow the build. Free, practical, no spam.

User's avatar

Subscribe to Ricardo Cardona | AI Systems

πŸ—‚οΈ Weekly business analysis, AI systems, automations and step-by-step tutorials for solo operators β€” from 10 yrs and 100+ business systems delivered for real companies.

People