ArchLang

archlang

Use when the user wants to create, edit, or inspect an architectural floor plan / building layout as code — e.g. "draw a 2-bedroom apartment", "add a bathroom to this plan", "make the bedroom 1 m wider", "lay out an office floor". ArchLang is a tiny text language that compiles a .arch file to a professional floor-plan drawing (SVG/PNG/PDF/DXF). Drive it entirely through the `archlang` CLI; do not hand-render.

archlang-brief-to-plan

Use when the user gives a written brief for a new floor plan (rooms, areas, how rooms connect, a plot size) and wants the drawing, e.g. "design a two-bedroom flat of about 75 m²" or "lay out a small office with four rooms". Writes an ArchLang .arch file from the brief, checks it against the brief with the archlang CLI, and finishes it as a sheet. Not for changing an existing plan (archlang-edit-plan) or for exporting one (archlang-export).

archlang-edit-plan

Use when the user wants to change an existing ArchLang .arch floor plan, e.g. "make the bedroom 1 m wider", "add a bathroom next to the hall", "move the front door to the south wall", "merge the kitchen into the living room". Reads the plan's facts with the archlang CLI, makes the smallest edit that does the job, and re-verifies. Not for writing a plan from a brief (archlang-brief-to-plan).

archlang-export

Use when the user wants an ArchLang .arch floor plan delivered as files, e.g. "export this plan as PDF", "give me a DXF for CAD", "a PNG I can paste into a document", "one sheet per floor", "print it at 1:50 on A3". Covers SVG, PNG, PDF and DXF output, paper size and scale, multi-storey plans and batches, through the archlang CLI, or through the ArchLang MCP tools and the Playground where the CLI cannot run. Not for writing or changing the plan itself.

archlang-review-plan

Use when the user wants an existing ArchLang .arch floor plan checked rather than changed, e.g. "review this plan", "does this layout meet the brief?", "is every room reachable?", "check it for accessibility", "why does lint complain?". Reads the plan's facts, runs the lint profiles and the intent gate through the archlang CLI, and reports findings with suggested fixes. It edits nothing unless asked.