Are electrical and plumbing included in the DXF?

Yes, on dedicated layers ELEC/PLOMB/PLOMB_RESEAUX, and also in the SVG/PNG preview, the metres counts and the PDF board.

Browser CAD (CAO) for trades & landscapers — AI operator guide

Q: Can an AI agent drive the CAD for any project type?

Yes. The JSON scene covers construction, interior renovation, MEP lots and decoration. The agent reads GET /api/v1/cao/schema, composes the scene, self-checks with /cao/metres and /cao/render, then delivers DXF, PDF or video.

A 3D editor in the browser, nothing to install: draw a plan, place code-compliant building elements, get costed quantities and a printable dimensioned plan — export to AutoCAD, or let an AI agent draw for you. An AI agent can drive the CAD for any project type (new build, renovation, extension, technical rooms, decoration, outdoor) through a simple JSON scene. Version française.

Drive the CAD from an AI agent

The same engine is exposed as a REST API and an MCP server. One JSON scene feeds every output below. Get a free key in one call — POST /api/v1/signup (no email) or the MCP tool obtenir_cle_api — then use header X-API-Key (REST) or Authorization: Bearer (MCP).

Endpoint	Purpose
`GET /api/v1/cao/schema`	Authoritative schema (all fields + examples) — no key. Read first.
`POST /api/v1/cao/verifier`	FREE geometric audit (no key) — floating dormers, absolute sill heights, blank upper floors… MCP: `cao_verifier`.
`POST /api/v1/cao/dxf`	JSON scene → AutoCAD DXF (walls/boxes as `3DFACE`, MEP on layers ELEC/PLOMB/PLOMB_RESEAUX)
`POST /api/v1/cao/metres`	Same scene → costed quantities (linear m, m², counts, paint litres) — to self-check
`POST /api/v1/cao/render`	Same scene → quick SVG/PNG top view (incl. electrical/plumbing/networks) — to self-check
`POST /api/v1/cao/pdf`	Same scene → presentable board: top view, elevations, shaded axonometric, MEP plan, dimensions
`POST /api/v1/cao/video`	Exterior orbit MP4 visit (async job_id). For more (interior room-by-room): editor → "Visite 4K"

The scene model + FR→EN glossary

Coordinate system: x = right, y = depth, z = height, all in millimetres. A scene is a JSON object of lists. Field names are in French — here is the glossary:

murs = walls: {x1,y1,x2,y2, hauteur(height, def. 2500), epaisseur(thickness, def. 200)}. Close the loop for a room.
ouvertures = openings (doors/windows): {mur(wall index), position(mm from x1,y1), largeur(width), hauteur(height), z, type:'porte'(door)|'fenetre'(window)}. Affects /cao/pdf only.
toitures = roofs: {type, murs, hauteur_faitage(ridge height)} — plat(flat), deux_pans(gable), quatre_pans(hip), conique, dome, chien_assis(dormer), personnalise(custom). Affects /cao/pdf only.
decoration = per-wall finish: {mur, face:'interieur'(inside)|'exterieur'(outside), type, couleur(hex)}. Types: peinture(paint), enduit(render), papier_peint(wallpaper), carrelage_mural(wall tiles), lambris(panelling), beton_cire(polished concrete).
electricite = electrical symbols: {type, mur, position} or {type, x, y}. Types: prise(socket), prise_rj45, interrupteur(switch), va_et_vient(2-way), luminaire(light), tableau_electrique(panel), detecteur_fumee(smoke detector), vmc(MEV).
plomberie = plumbing fixtures. Types: evier(sink), lavabo(basin), wc(toilet), douche(shower), baignoire(bathtub), chauffe_eau(water heater), radiateur(radiator), compteur_eau(water meter).
reseaux = pipe networks: {type, diametre(diameter), trace:[{x,y}…]}. Types: ef(cold water), ec(hot water), eu(waste), ev(soil), ep(rainwater), chauffage(heating).
boites = boxes/volumes (masses, furniture, slabs, terraces): {x,y,l(length),p(depth),h(height), z, rotation}; plan/cercles = 2D lines/circles.
Multi-floor: every murs item accepts z (base altitude, mm) — stack as many floors as you want (ground floor z:0, first floor z:2600, …).
escaliers = stairs (straight flight, sized by the French Blondel rule): {x, y, hauteur(rise to next floor), largeur(width), rotation, z}.
ascenseurs = elevators/lifts (shaft + accessible cabin, NF EN 81-70 1100×1400 mm): {x, y, niveaux(floors served), hauteur(per floor), largeur, profondeur, porte, rotation, z}.
garde_corps = guardrails (balcony/mezzanine/stairwell): {x1,y1,x2,y2, hauteur(default 1000, NF P01-012), z}.

Where each field renders: electricite, plomberie and reseaux appear everywhere — DXF layers ELEC/PLOMB/PLOMB_RESEAUX, the SVG/PNG preview, the metres counts and the PDF board. ouvertures and toitures affect the /cao/pdf board only.
Recommended workflow: ① GET /cao/schema → ② compose the scene → ③ POST /cao/verifier (fix critical alerts) → ④ /cao/metres + /cao/render → ⑤ deliver /cao/dxf, /cao/pdf and/or /cao/video (orbit MP4). For more (interior tour): editor → "Visite 4K".

Example scenes by project type

Copy-and-adapt starting points. All dimensions in millimetres.

Detached house (structure + openings + roof + decoration)

{
  "murs": [
    {"x1":0,"y1":0,"x2":9000,"y2":0,"hauteur":2600,"epaisseur":200},
    {"x1":9000,"y1":0,"x2":9000,"y2":7000,"hauteur":2600,"epaisseur":200},
    {"x1":9000,"y1":7000,"x2":0,"y2":7000,"hauteur":2600,"epaisseur":200},
    {"x1":0,"y1":7000,"x2":0,"y2":0,"hauteur":2600,"epaisseur":200}
  ],
  "ouvertures": [
    {"mur":0,"position":3800,"largeur":1000,"hauteur":2150,"type":"porte"},
    {"mur":2,"position":3500,"largeur":1400,"hauteur":1250,"z":900,"type":"fenetre"}
  ],
  "toitures": [{"type":"deux_pans","hauteur_faitage":1800,"debord":300}],
  "decoration": [{"mur":0,"face":"exterieur","type":"enduit","couleur":"#e9e2d0"}]
}

Multi-storey house (R+2) with a roof on top

Stack as many floors as you like: repeat the walls with the right z (0, 2600, 5200…), add one stair per level, a mezzanine guardrail, and a roof of your choice at the total height.

{
  "murs": [
    {"x1":0,"y1":0,"x2":8000,"y2":0,"z":0},{"x1":8000,"y1":0,"x2":8000,"y2":6000,"z":0},
    {"x1":8000,"y1":6000,"x2":0,"y2":6000,"z":0},{"x1":0,"y1":6000,"x2":0,"y2":0,"z":0},
    {"x1":0,"y1":0,"x2":8000,"y2":0,"z":2600},{"x1":8000,"y1":0,"x2":8000,"y2":6000,"z":2600},
    {"x1":8000,"y1":6000,"x2":0,"y2":6000,"z":2600},{"x1":0,"y1":6000,"x2":0,"y2":0,"z":2600},
    {"x1":0,"y1":0,"x2":8000,"y2":0,"z":5200},{"x1":8000,"y1":0,"x2":8000,"y2":6000,"z":5200},
    {"x1":8000,"y1":6000,"x2":0,"y2":6000,"z":5200},{"x1":0,"y1":6000,"x2":0,"y2":0,"z":5200}
  ],
  "escaliers": [{"x":600,"y":600,"hauteur":2600,"z":0},{"x":600,"y":600,"hauteur":2600,"z":2600}],
  "ascenseurs": [{"x":2200,"y":800,"niveaux":3,"hauteur":2600,"z":0}],
  "garde_corps": [{"x1":600,"y1":2000,"x2":4000,"y2":2000,"hauteur":1000,"z":2600}],
  "toitures": [{"type":"quatre_pans","z":7800,"hauteur_faitage":2200,"debord":400}]
}

Bathroom — technical (plumbing + networks + MEV)

{
  "murs": [
    {"x1":0,"y1":0,"x2":2600,"y2":0},{"x1":2600,"y1":0,"x2":2600,"y2":2200},
    {"x1":2600,"y1":2200,"x2":0,"y2":2200},{"x1":0,"y1":2200,"x2":0,"y2":0}
  ],
  "plomberie": [
    {"type":"douche","mur":1,"position":600},
    {"type":"lavabo","mur":0,"position":1800},
    {"type":"wc","mur":2,"position":500}
  ],
  "electricite": [{"type":"vmc","x":1300,"y":1100},{"type":"luminaire","x":1300,"y":700}],
  "reseaux": [
    {"type":"ef","trace":[{"x":0,"y":300},{"x":600,"y":300},{"x":600,"y":100}]},
    {"type":"ev","trace":[{"x":500,"y":2200},{"x":500,"y":1400},{"x":1800,"y":1400}]}
  ]
}

Video walkthrough

API — POST /api/v1/cao/video (MCP cao_video): exterior orbit MP4 (async). For more — editor “Visite 4K” button: GPU cinematic tour (exterior + interior room-by-room, 4K 30 fps, bare shell or furnished). Still boards: /cao/pdf or /cao/render.

FAQ

Do I need to install software?

No — the editor runs entirely in the browser (WebGL/Three.js), no dedicated GPU required.

Can an AI agent drive the CAD for any project type?

Yes. The JSON scene model covers construction (house, apartment, extension, commercial), interior renovation (partitions, doors, per-room finishes), MEP lots (electrical, plumbing, networks) and decoration. An agent reads GET /api/v1/cao/schema for exact fields, composes the scene, self-checks with /cao/metres and /cao/render, then delivers the DXF, the PDF board or the video.

Are electrical & plumbing in the DXF?

Yes — on dedicated layers ELEC/PLOMB/PLOMB_RESEAUX (symbols + type labels), and also in the SVG/PNG preview, the metres counts and the PDF board.