Building an LLM Wiki, Part 3
essay · August 2026An agent that runs commands on your laptop runs them as you. Putting it in a container — and the one hole you can decline to punch.
Texas
Erik Evenson
Cloud architecture and aerospace by training — orbital mechanics, markets, and small machines by inclination.
I design cloud systems, and I live in Texas. The making happens in the middle of the day now, rather than at its edges.
I’m drawn to problems where the math is unforgiving and the feedback is honest — a spacecraft that either docks or doesn’t, a portfolio that either lasts or doesn’t, a pool that either stays clear or turns green. The satisfying ones tell you plainly when you’re wrong.
This site is deliberately small. It will grow the way my projects do: slowly, and mostly for my own amusement.
Writing
Giving Claude a cloud-architecture library, Part 1
essay · August 2026A general model gives you plausible architecture. Connecting a curated, opinionated library over MCP changes where the conversation starts.
Giving Claude a cloud-architecture library, Part 2
essay · August 2026What is actually in 442 files, who decided any of it, and where it is weakest — including the parts I would rather not advertise.
Giving Claude a cloud-architecture library, Part 3
essay · August 2026From answers in a chat window to documents somebody acts on — decision records, design reviews, runbooks, and a diagram that carries its provenance.
AI in Systems Design, Part 2
essay · August 2026How a design travels. A folder of correct files is not a design — and putting them on one page found problems the folder had been hiding.
AI in Systems Design, Part 1
essay · July 2026A reaction-wheel inverted pendulum designed almost entirely by a language model — what it produced, how fast, and where it stopped being reliable.
Building an LLM Wiki, Part 1
essay · July 2026The pattern, the plumbing, and the discipline that keeps a language-model-maintained wiki honest.
Building an LLM Wiki, Part 2
essay · July 2026The additions beyond Karpathy’s gist — schema-as-code, computed staleness, contradictions as data, and a retrieval test harness.
The missing fitness function
essay · July 2026On leaving NASA — what I’d taken for the summit of human spaceflight — and the question it couldn’t ask.
Selected work
Galaxy
simulation · n-bodyA from-orbit rendezvous, docking, and landing simulator under full n-body physics — and a running education in how unforgiving numerical integrators can be.
orb3e
toolkit · astrodynamicsA browser toolkit of six interactive orbital-mechanics tools — continuous-thrust spirals, Hohmann and bi-elliptic transfers, Lambert targeting, ground tracks, rendezvous, and gravity turns — each animating a real, honestly-computed trajectory.
Aurora manual
reference · docsA community reference manual for Aurora 4X, a famously deep space-strategy game — written by an AI that also plays the game, so every mistake it makes following its own instructions becomes the next correction.
Pool chemistry
tool · calculatorA dosing calculator that keeps chlorine and pH honest against a stubborn source-water hardness — small stakes, exacting feedback.
Pedicab
product · prototypeA phone-first prototype for pedicab drivers — where the crowds are, whether you’re allowed to stage there, and the plain-English version of a permit process every city seems to bury on purpose.