Forming a US LLC as a non-resident, using AI tools in a small business, and the real numbers behind each step. Written from Medellín, by someone who went through the process.
The English side of this site is new. Right now it has one guide, and I’m translating the most useful Spanish ones first.
Start here
How to convert a PDF to Markdown without burning tokens
When you upload a PDF to Claude or ChatGPT to ask about a single paragraph, you pay for reading the whole document. This guide explains why, and how TokDown handles it. Full disclosure: TokDown is a free tool I co-created with two colleagues.
What I write about
- US LLCs for non-residents: choosing a state, registered agents, the EIN and opening a bank account. These guides are in Spanish for now: forming an LLC from Colombia, getting an EIN as a foreigner, opening a US bank account for your LLC and LLC costs by state.
- AI and automation: tools that save time or money in a small business, tested before I write about them.
- Productivity and resources for people building on their own.
Who writes this
I’m Carlos Correa Builes, born in Medellín, Colombia. I’m a financial engineer with a specialization in marketing management and a master’s degree in SEO.
In 2020 I formed my first LLC in Wyoming. I paid $39 for the registered agent and requested the EIN myself by fax: it was free and took almost a month. The LLC was set up to run an online glasses store for the US market. The legal setup worked fine. The store didn’t survive its delivery times.
Today I work on AI, automation and micro-SaaS, and I build multi-agent systems.