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immobilier

by fr.synergieloc
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Show the model as built at a date (4D)

cao_4d
Read-only

WHEN the building must be shown AS IT WILL BE BUILT over time (4D, as Navisworks links a model to a schedule): every element belongs to a trade (load-bearing walls to structural works, roof to roofing, facade openings to exterior joinery, partitions and rooms to drywall, interior doors and stairs to interior joinery, finishes, furniture at handover); the schedule comes from the model's quantities. Returns one step per trade with its dates and, as SVG, the axonometric view and the ground-floor plan as built at the end of that trade, and optionally the state at a given date.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
dateNoOptional date, YYYY-MM-DD: the state of the site on that day.
mursNoWalls: plan segments extruded vertically. Every coordinate in this whole scene is in MILLIMETRES, in a single plan frame whose origin you choose — X to the right, Y upward, Z up from the floor. Keep one consistent origin across murs/boites/plan: the generators never recentre anything for you.
planNo2D reference lines — drawn flat, never extruded and never counted in the quantities. Use them for axes, plot limits or setting-out marks.
debutNoSite start date, YYYY-MM-DD (today by default).
boitesNoBoxes (furniture, volumes): a rectangular block placed by its CENTRE, not by a corner. Millimetres, same frame as murs[].
georefNoOptional Lambert-93 (EPSG:2154) false origin for IfcMapConversion. Local millimetres are scaled by 0.001 to CRS metres. Do not invent coordinates: omit est/nord if unknown (origin stays 0). orientation is the angle in degrees of project X from map East, counterclockwise.
imagesNoInclude the SVG views.
cerclesNoCircles on the 2D plan, alongside plan[] lines: each has a centre and a radius, in the same unit as the plan. Use for round shapes a polyline would render badly — fillets, posts, manholes.
reseauxNoPlumbing pipe runs (EF/EC/EU/EV/EP/chauffage) — used only by cao_pdf (technical plan + linear-meter quantities per type).
toituresNoRoofs — used only by cao_pdf. WITHOUT this field: a flat roof is auto-generated over the footprint of ALL walls (legacy default). WITH it: compose freely — each entry can target a subset of walls (via `murs`), letting you build an L-shaped building's roof, or add a dormer on top of a main roof.
plomberieNoSanitary fixtures (sink, WC, shower…) — used only by cao_pdf. Same positioning as electricite.
decorationNoPaint/finish per wall — used only by cao_pdf. Colors the elevations (exterior face) and the axonometric view (face auto-detected by orientation relative to the building's centroid).
ouverturesNoDoors/windows embedded in a wall — used only by cao_pdf (elevations + axonometric view), no effect on dxf/metres.
electriciteNoElectrical symbols (outlets, switches, lights…) — used only by cao_pdf (dedicated technical plan + quantities), no effect on dxf/metres/render. Position: attached to a wall (`mur`+`position`, like ouvertures) or free (`x`,`y`).
compositionsNoNamed wall/slab layer sets declared by the project. A key that matches an inferred kind (mur_exterieur, refend, cloison, plancher, toiture) or murs[].composition drops the Hypothese flag. Each value is {libelle, couches: [{cle, epaisseur?}]}. cle: enduit, bloc_beton, isolant, ba13, ossature, enduit_platre, beton_arme, tuile, charpente, etancheite. Omit epaisseur on the load-bearing layer.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Added

TDQS

A3.9/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already cover read-only, non-destructive, closed-world, so the safety profile is settled. The description adds real output behavior: one step per trade with dates, SVG axonometric and ground-floor plan per step, and the optional single-date state — valuable since there is no output schema.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

A single dense paragraph, front-loaded with the WHEN trigger and the 4D framing before the trade vocabulary and return description. Slightly run-on but every clause carries information about output structure or classification.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a 15-parameter, all-optional, no-output-schema tool, the description supplies the missing return-value picture (per-trade steps, dates, two SVG views, single-date state). The input scene schema is inherited and well documented elsewhere, so little is left unexplained.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the 15 scene parameters are already fully documented in the schema, which sets the baseline at 3. The description adds domain framing (trade classification, schedule derived from model quantities) but no parameter-level detail beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('show the model as built at a date') and pins the semantics precisely with '4D, as Navisworks links a model to a schedule'. It is clearly the only scheduling/sequencing sibling among the cao_* export tools, though it never names an alternative explicitly.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Opens with an explicit trigger ('WHEN the building must be shown AS IT WILL BE BUILT over time'), which is a clear usage context an agent can match. It offers no when-not guidance or named alternatives (e.g. cao_permis, cao_pdf) for overlapping use cases.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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