San Antonio, Texas
Castilloworks
A San Antonio studio that builds and runs its own companies. Four working, a fifth taking shape.
A tree doesn't grow in leaps. It adds one ring at a time, and every ring stays. This studio grows the same way: patiently, on purpose, each company a ring around the last.
Property operations
Iron Star
Doorstep trash valet and grounds upkeep for apartment communities in San Antonio. The unglamorous work, done like it matters.
A star drawn without lifting the pen. The route runs the same way: one pass, no gaps.
Visit Iron StarNonprofit wedding ministry
Castillo Family Marriage Ministries & Weddings
Bilingual ceremonies in English and Spanish, Bexar County, Texas. No couple turned away for financial reasons.
Two rings drawn in one continuous line, crossing in the middle. The crossing is the whole ministry.
Visit the ministryMedia, the founder's Instagram
broseph.ai
Short videos about free, public tools most people don't know exist. Privacy, OSINT, and the internet they don't show you.
An eye drawn in one line. Everything the account shows was sitting in plain sight the whole time.
Visit broseph.aiCourses & tools, first releases 2026
Studio Products
Courses, prompt packs, and open workflows from the studio's own AI pipeline. We only sell what we already use.
A cube is six faces drawn from three lines. Good tools look simple because the structure underneath isn't.
Visit the productsAfter-school STEM, in development
NeuroNest
Small-group STEM sessions in San Antonio for gifted kids, the ones who take things apart to see why. First families hear first.
A nest is one line wound around what it protects. Built for the kids whose questions don't stop.
Visit NeuroNestThe companies.
Measured from San Antonio.
The line doesn't stop at six. When the next company earns its place, the pen is already down.
Castilloworks is a working studio in San Antonio, Texas. Meet the founder.