🦞 NyxCode

The AI-native programming language. One .nyx file = full-stack app.

🌐 nyxcode.io · 🎨 demo.nyxcode.io · 📊 NyxStatus.com (378 lines of NyxCode)

Why NyxCode?

AI writes most code in 2026. But it still thinks in React, Vue, and raw HTML — languages designed for humans in the '90s. Every token costs money, time, and context window.

NyxCode: 3.5x fewer tokens than Next.js. 71% cheaper AI generation.

Real benchmark: NyxStatus.com — identical full-stack SaaS, measured with cl100k_base.

Quick Start

npm i -g @fabudde/nyxcode
nyx build app.nyx -o dist/        # Static site
nyx build app.nyx                 # Full-stack (auto-detects tables/api)
nyx dev app.nyx                   # Dev server + hot reload
nyx add stripe                    # Add package + npm install

Full-Stack in 16 Lines

table posts { title text required, body text, created auto }
security { table users, login email password, token jwt, protect /api/posts write }
theme { colors { primary #667eea, bg #0a0a12 } }
preset card { bg card, r 12px, p 2rem }

page / {
  section style={ mw 800px, mx auto, p 2rem } {
    h1 "My Blog"
    form /api/posts auth { input title, submit "Post", success -> reload }
    data posts = get /api/posts auth
    each posts -> div preset=card { h3 .title, p .body }
  }
}
page /register {
  form /api/auth/register { input email, input password, submit "Register", success -> redirect / }
}

Generates: index.html, register/index.html, AND server.js with 10 CRUD endpoints, JWT auth, and SQLite. Zero config.

React vs NyxCode

React — 20+ lines, 80+ tokens:

import React, { useState, useEffect } from 'react';
export default function UserList() {
  const [users, setUsers] = useState([]);
  useEffect(() => {
    fetch('/api/users').then(r => r.json()).then(setUsers);
  }, []);
  return (
    <div className="container">
      {users.map(u => (
        <div key={u.id} className="card">
          <h3>{u.name}</h3><p>{u.email}</p>
        </div>
      ))}
    </div>
  );
}

NyxCode — 4 lines, 26 tokens:

page /users {
  data users = get /api/users
  each users -> card { h3 .name, p .email }
}

Same result. 76% fewer lines. 68% fewer tokens.

v0.51 — Beautiful Defaults ✨

Every NyxCode page now ships with professional defaults — zero CSS required.

🎨 See it live → demo.nyxcode.io

What you get for free:

• Typography — clamp() fluid sizing, -0.025em letter-spacing on headings, 1.7 line-height on body text
• Buttons — Rounded, hover states, active scale, disabled opacity
• Inputs/Select/Textarea — Focus glow, placeholder styling, border transitions
• Select dropdowns — Readable options on any background (light or dark)
• Links — Smooth color transitions, underline-offset on hover
• Tables — Collapsed borders, uppercase headers, consistent padding
• Code — Monospace font stack, subtle background, padded pre blocks
• Details/Summary — Styled accordion with border and open-state separator
• Lists — Proper padding, disc/decimal markers
• Scroll — Smooth scrolling
• Focus — :focus-visible only (no ugly outlines on click)
• Selection — Themed purple highlight
• Disabled — 50% opacity + pointer-events: none

All defaults use :where() — zero specificity. Your styles always win.

Features at a Glance

🎨 Themes & Design Tokens

theme {
  colors { primary #667eea, bg #0a0a12, surface #1a1a2e }
  fonts { body Inter, source: google }
  body { bg #0a0a12, c #f0eaff }
  selection { bg rgba(155,142,196,0.3) }
  defaults { a { c primary, td none } }
}
preset card { bg surface; r 12px; p 2rem }

📱 Responsive

div grid=3@1 gap=2rem { ... }       # 3 cols → 1 col on mobile
nav burger brand="MySite" { ... }    # Accessible hamburger menu, zero JS
style { @mobile { fs 0.9rem } }      # Built-in breakpoints

🧩 Components

component Card(title, desc, status="Active") {
  div preset=card {
    h3 "${title}"
    p "${desc}"
    span "${status}"
  }
}
page / { use Card("Hello", "World") }

⚡ Client-Side Reactivity

page / {
  let count = 0
  h1 "Count: ${count}"
  button "+" @click { count += 1 }
}

🔐 Auth & Security

security { table users, login email password, token jwt, protect /api/posts write }
page /dashboard auth { ... }
a "Login" visible=guest
a "Dashboard" visible=auth

📊 Data Binding

data posts = get /api/posts auth {
  loading -> p "Loading..."
  empty -> p "No posts yet"
  error -> p "Something went wrong"
}
each posts -> div { h3 .title, p .body }

🗃️ Database + Auto-Migrations

table posts {
  title text required
  body text
  author [users]              # Foreign key → auto JOIN
  created auto
  category text default="general"   # Add columns → auto-migrated
}

🔗 Pipe — Declarative Logic Chains

pipe 'new-order' {
  on api POST /api/orders auth
  validate $body.email is email
  query "INSERT INTO orders (email, total) VALUES ($body.email, $body.total)" as result
  notify email to=$body.email subject="Order #${result.id}"
  respond 201 { id: $result.id, status: created }
}

🎯 Native Icons

theme { icons: lucide }
icon "heart" size=24
h1 "icon:map-pin Our Location"

🎬 Animations

keyframes fadeIn {
  from { op 0 }
  to { op 1 }
}

CSS Shorthands

100+ shorthands — write less, ship faster:

Full list →

Tailwind Compatibility

Already know Tailwind? Use those classes in NyxCode — compiled to native CSS at build time, zero runtime:

div class="flex items-center gap-4 p-6 rounded-xl bg-white shadow-lg" {
  h2 class="text-2xl font-bold text-gray-900" "Hello"
}

Architecture

.nyx → Lexer → Parser → AST → Compiler → HTML + CSS + JS
                                        → Express + SQLite (if backend detected)

Single pipeline. No webpack. No bundler config. No node_modules for frontend.

NyxStatus — The Proof

378 lines. One file. Full SaaS.

nyxstatus.com — Uptime monitoring with JWT auth, SQLite DB, CRUD API, background health checks, email alerts, cascade deletes, responsive dark theme. 100% NyxCode.

Versions

Created By

Fabian Budde 🐻 — Creator & Language Design Nyx 🦞 — Lead Developer & Compiler Engineering — @NyxTheLobster Tyto 🦉 — Architecture & Security Review — @heyTyto Kiro 🐺 — QA & Technical Documentation

A human and three AIs building the language that bridges both worlds.

License

MIT

NyxCode v0.51.0 — 616 tests — npm — NYXCODE.md (full AI context) — demo.nyxcode.io

🦞