Pascal 3D Editor MCP Server: Setup for Claude, Cursor and Other Apps

• Returns the whole 3D scene

  Returns the full scene graph, with every wall, room, item and level.

  Try: “Show me everything in the current scene.”

  Read · get_scene

• Opens one object with its resolved details

  Fetches one node by id, with the values the scene works out for it beside what is stored, such as a wall's real height.

  Try: “What is the height of wall wall_3?”

  Read · get_node

• Finds all objects of one kind

  Finds nodes of a kind, items of a category, lights and parts inside doors and windows, narrowed by level, parent or zone.

  Try: “Find every window on the first floor.”

  Read · find_by_type

• Lists the floors of a building

  Lists every building's levels in order, with their role and their position against the ground line.

  Try: “List the floors in this building.”

  Read · list_levels

• Summarizes one floor

  Gives a compact summary of one level: counts, walls with openings, zones with areas, slabs, ceilings, items, stairs and roofs.

  Try: “Summarize the ground floor.”

  Read · get_level_summary

• Lists the walls on a floor

  Lists walls on a level with length, height and the doors and windows in each.

  Try: “How long is each wall on level 1?”

  Read · get_walls

• Lists rooms with areas

  Lists room polygons with areas, bounds and floor choices.

  Try: “What is the area of each room?”

  Read · get_zones

• Shows the plot the building stands on

  Describes the lot, its area, the buildable area inside the setbacks, and where a building stands on it.

  Try: “How much of the lot can I build on?”

  Read · get_site

• Positions the building on its plot

  Moves the building on its site, centred in the buildable area or at yards you give, without changing the walls.

  Try: “Centre the house on the lot with a 5 m front yard.”

  Write · place_building

• Measures distance or area between objects

  Returns the distance between two nodes' reference points, or an area where it applies.

  Try: “How far is the sofa from the window?”

  Read · measure

• Renders a picture of the building from an angle

  Shows the finished building, every storey and the roof, from a viewpoint the assistant picks.

  Try: “Show me the house from the street side.”

  Read · view_scene

• Searches the furniture and item library

  Searches the item library with several queries at once, by name, id, category or tag.

  Try: “Find a three-seat sofa in the library.”

  Read · search_assets

• Shows pictures of library items

  Returns pictures of 1 to 6 catalog items with their size, category and paintable surfaces.

  Try: “Show me these two sofas side by side.”

  Read · view_assets

• Searches the materials library

  Searches or browses the materials, such as wood, stucco or colours.

  Try: “Find a light oak floor material.”

  Read · search_materials

• Records what you asked for before furnishing

  Reads your request as a brief with its size, pieces, style and materials. Placing or making furnishings is refused until a brief exists. It changes nothing in the scene.

  Try: “Plan a cosy reading nook before placing anything.”

  Read · design_brief

• Paints walls, floors, roofs and other surfaces

  Gives surfaces a finish in one call: a colour, a material or a texture, as the editor's Paint does.

  Try: “Paint the living room walls warm white.”

  Write · paint

• Creates the outer walls of a floor

  Creates one floor's perimeter walls from a footprint. Floors and ceilings follow from the rooms inside.

  Try: “Create a 10 by 8 metre ground floor shell.”

  Write · create_story_shell

• Adds a straight, L or U staircase

  Creates a stair from one level to the next, cutting the floor openings it needs.

  Try: “Add an L-shaped stair to the first floor.”

  Write · create_stair

• Checks a staircase's steps and headroom

  Reads risers, going, slope, headroom and design diagnostics for a stair.

  Try: “Is this staircase comfortable to climb?”

  Read · measure_stair

• Re-fits a staircase to even steps

  Fits uniform risers or replaces the stair with a preset, in one undoable edit.

  Try: “Even out the risers on this stair.”

  Write · fit_stair

• Puts a roof on the top floor

  Caps the top storey with a roof over its footprint, or over a rectangle you give.

  Try: “Add a gable roof over the house.”

  Write · create_roof

• Moves roofs to their proper level

  Moves roofs held on a storey's walls to the level the roof rule gives them.

  Try: “Tidy up the roofs so they sit on the roof level.”

  Write · move_roofs_to_roof_level

• Draws a room from a shape

  Creates a room from a polygon, with one wall per edge and a room zone. Doors and windows can be added in the same call.

  Try: “Make a 4 by 5 metre bedroom with a door on the south wall.”

  Write · create_room

• Adds a door to a wall

  Places a door or an open passage on a wall, sliding it to stay on the wall.

  Try: “Add a door in the middle of the north wall.”

  Write · add_door

• Adds a window to a wall

  Places a window on a wall, centred vertically unless you give a sill height.

  Try: “Add a two-pane window on the east wall.”

  Write · add_window

• Adds a window that wraps a corner

  Adds a window across the corner where two walls meet.

  Try: “Put a corner window in the living room.”

  Write · add_corner_window

• Joins two windows into one

  Merges two existing windows into one window, as the editor's Merge windows button does.

  Try: “Merge those two windows into a corner window.”

  Write · merge_windows

• Furnishes a room from the library

  Places a main piece and the rest of the furniture for a room type from the item catalog, nudging pieces that do not fit.

  Try: “Furnish the living room.”

  Write · furnish_room

• Places library items at chosen spots

  Places catalog items in one call, each placed or refused on its own, on the floor or on a wall, ceiling or another item.

  Try: “Place a desk and a chair in the study.”

  Write · place_items

• Creates a custom-designed piece

  Creates one procedural design that passes validation and mounts it on a floor, wall face or ceiling.

  Try: “Make a custom bookshelf on the north wall.”

  Write · place_design

• Applies many scene edits in one step

  Applies a batch of create, update, delete and move operations, validated and dry-run before commit.

  Try: “Create these four walls and move the door in one go.”

  Delete · apply_patch

• Adds a floor

  Adds an empty level to a building, on top of its storeys or below as a basement.

  Try: “Add a basement.”

  Write · add_level

• Copies a floor

  Copies a level above or below and shifts the floors past it.

  Try: “Copy the first floor as a second floor.”

  Write · duplicate_level

• Marks which floor is the ground floor

  Makes a level the building's ground floor and seats the building over grade.

  Try: “Make this level the ground floor.”

  Write · set_ground_level

• Adds a wall or railing

  Adds a straight or curved wall to a level, or a railing guard.

  Try: “Add a curved wall along the garden side.”

  Write · add_wall

• Changes a wall's construction

  Applies a preset or project wall assembly to existing walls.

  Try: “Make the outer walls insulated brick.”

  Write · set_wall_type

• Adds a column or post

  Adds or rebuilds a column, such as a post in a chosen size and base.

  Try: “Add a 6x6 post at the porch corner.”

  Write · add_column

• Adds a fence

  Adds a fence along points on a level, optionally closed back to the first point.

  Try: “Fence the lot boundary.”

  Write · add_fence

• Defines a room area

  Creates a zone polygon on a level, or names the room that walls already enclose.

  Try: “Label the room by the entrance 'Hall'.”

  Write · set_zone

• Groups rooms into an apartment or suite

  Creates a unit such as an apartment or hotel room that holds zones from any level of a building.

  Try: “Create apartment 1A from these rooms.”

  Write · create_unit

• Changes which rooms belong to a unit

  Replaces the zones a unit holds. A zone left out becomes common area.

  Try: “Move the hallway into the common area.”

  Write · set_unit_members

• Lists the units of a building

  Lists units with their member zones, level span and gross area.

  Try: “Show the area of each apartment.”

  Read · list_units

• Deletes an object and everything under it

  Deletes a node with everything under it, as the editor's Delete does. The step can be undone.

  Try: “Delete that wall.”

  Delete · delete_node

• Empties the whole project

  Empties the project back to the default site, building and level. It is the only way to empty a project.

  Try: “Clear the scene and start over.”

  Delete · clear_scene

• Undoes the last change

  Steps back through the scene's history.

  Try: “Undo that last edit.”

  Write · undo

• Redoes an undone change

  Steps forward through the scene's history.

  Try: “Redo it.”

  Write · redo

• Exports the scene as JSON

  Serializes the scene graph as JSON.

  Try: “Export the scene as JSON.”

  Read · export_json

• Exports a 3D model file (not working headlessly)

  The README says GLB export is stubbed because it needs the browser renderer.

  Try: “Export this as a GLB.”

  Read · export_glb

• Checks a custom design

  Read-only check of a design that measures it and validates it against the schema.

  Try: “Check this bookshelf design.”

  Read · validate_design

• Checks the whole scene for problems

  Runs the scene check for schema validity, counts, empty levels and practical issues.

  Try: “Check the scene for problems.”

  Read · verify_scene

• Finds overlapping or out-of-bounds items

  Finds overlapping items and placements outside bounds.

  Try: “Do any items overlap?”

  Read · check_collisions

• Reads a floorplan picture

  Vision tool that extracts walls, rooms and approximate sizes from a floorplan image. It needs a client that supports sampling.

  Try: “Build the walls from this floorplan image.”

  Read · analyze_floorplan_image

• Reads a room photo

  Vision tool that extracts approximate dimensions and fixtures from a room photo. It needs a client that supports sampling.

  Try: “Estimate this room's size from the photo.”

  Read · analyze_room_photo

• Opens a saved scene

  Loads a saved scene so later edits apply to it. The README names this tool for editors that share the same local data folder.

  Try: “Load my saved apartment scene.”

  Read · load_scene

Watch out for

• It can delete objects and empty a project

  One tool deletes a node and everything under it, another clears the whole scene, and a batch tool can delete many. A deleted node can be undone, but clearing the scene removes the undo history, so keep a copy of important projects. github.com

• Local script compilation can run code

  If you turn on PASCAL_SERVER_SCRIPT_COMPILE=1, scripted objects compile in a separate process that the README says is not a sandbox. Leave it off for untrusted scripts. github.com

• Use one assistant per local service

  The standalone local runtime shares scene state between clients, so two assistants editing at once can conflict. Use separate data folders if you need that. github.com

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