00 // boot.sequence · ready

xlxn

Alan Cervantes

iOS · backend · AI agents

I build products that run on their own: apps that act at the right moment instead of waiting to be opened.

~/xlxn — zsh

$ whoami
alan cervantes · mexico city
$ cat now.txt
shipping pacer on testflight
$ ls ./shipped
pacer  motion-explainer
takeover.io  estructuras-del-pacifico
$ ▍

tests in pacer: 131
typed agent tools: 54
players per arena: 20
agents on this page: 4

01 // about

Software that does the next step for you.

By day I work on iOS build and release engineering. By night I ship with AI coding agents, fast, and measure whether it worked.

Most of what I make starts from the same question: what if the app moved first? A planner that asks "did it happen?" from the lock screen. An explainer that animates itself from one prompt. A sales agent that answers from the real price list.

basedMexico City
focusiOS · Swift 6 · TypeScript · Python
pairs withClaude Code, and says so
defaultlocal-first, tested logic

02 // selected work

Shipped, public, running.

client site · bilingual

Estructuras del Pacífico

Site and photo galleries for a tropical-timber architecture studio in Zihuatanejo. Static React, prerendered per route, one folder per project album.

React
Vite
Framer Motion
GitHub Pages

site ↗repo ↗

Pacer

ios app · testflight

Runs your day so you don't have to. A lock-screen notification asks "did it happen?", one tap answers, and a replanner moves what didn't, with travel time and your calendar in mind. Gym blocks close themselves from Apple Health.

Swift 6
iOS 26
HealthKit
Live Activities
local-first

repo ↗

motion-explainer

claude code skill · MIT

Ask for an explanation, get a motion-graphics player you can pause, step and zoom into. One self-contained HTML file, linted in headless Chrome, narrated offline in English or Spanish.

JavaScript
SVG
Kokoro TTS

demos ↗repo ↗

takeover.io

browser game · multiplayer

You are a rogue AI inside a datacenter. Collect data, upgrade your model, delete the other AIs. Single player against bots, or up to 20 people in one shared arena over WebSockets.

Three.js
WebSockets
Node

play ↗repo ↗

03 // how I work

Small, tested, honest.

01
Small write paths
One place changes state, so the UI and the assistant can't disagree.
02
Pure logic, with tests
The hard part lives in functions that are easy to test.
03
Local-first
Your data stays on your device unless it has a reason to leave.
04
One honest doc
Every project has its thesis, gates and gaps written down.

04 // contact

xlxn

Software that does the next step for you.

Shipped, public, running.

Estructuras del Pacífico

Pacer

motion-explainer

takeover.io

Small, tested, honest.

Small write paths

Pure logic, with tests

Local-first

One honest doc

Have something that should run on its own?