Archlang MCP server

<!-- AGENT-FIRST NOTICE -->

[!IMPORTANT]

### 🤖 Read this with your AI agent — don't read it by hand.

This repo is written agent-first. Point Claude Code, GitHub Copilot, Cursor, or any agent at it:

"Read the README and AGENTS.md, then help me run / extend this."

Structure + AGENTS.md are optimized for agent comprehension.

<!-- /AGENT-FIRST NOTICE -->

Floor plans as code — compiled to SVG, DXF and PDF.

An open-source (MIT) DSL for floor plans that compiles .arch source to SVG/DXF/PDF with linting and geometric validation — diffable, reproducible, and LLM-writable. Text in, a precise architectural drawing out: deterministic, zero-dependency, and built so an AI agent can verify its own plan without ever looking at an image.

▶ Live Playground · 📖 Docs · ⌨ CLI reference · 📦 npm · 🧩 VS Code

👀 See it

Here is a whole program, and below it the actual drawing it compiles to — not a mock-up. Not one coordinate in it places a door, a window or a piece of furniture: every opening is pinned to a distance along a named wall, every fixture resolves against a room or a wall, and the bath and bedroom are laid out by a strip. site { street north } names the two facades the plan turns on — the front door faces the lane, the glazing faces the garden.

# A one-bedroom laneway cottage — 49 m² that reads as one program.
#
# Nothing here is positioned by hand. Every opening is pinned to a run distance along a
# named wall (`on <wall> at <pos>`), every fixture resolves against a room or a wall
# (`in <room> anchor …`, `against wall …`), and the bath/bedroom pair is laid out by
# `strip`. `site { street north }` names the two facades the plan turns on: the door
# faces the lane, the glass faces the garden.
plan "Laneway House" {
  units mm
  grid 50            # partitions are 100 thick, so a `flush` fixture lands on a …50
  north up
  dims auto all
  site { street north }

  wall id=w_lane   exterior  thickness 200 { (0,0) (7500,0) }
  wall id=w_east   exterior  thickness 200 { (7500,0) (7500,6500) }
  wall id=w_garden exterior  thickness 200 { (0,6500) (7500,6500) }
  wall id=w_west   exterior  thickness 200 { (0,0) (0,6500) }
  wall id=w_hall   partition thickness 100 { (4200,0) (4200,6500) }
  wall id=w_bath   partition thickness 100 { (4200,2500) (7500,2500) }

Shortened. The full README is on GitHub.