# Teztopia — full reference for AI agents

> Everything an agent needs to build in Teztopia, as plain text. Generated from the site's code (docs updated 18 October 2026; SDK 0.3.0). Human pages: https://teztopia.xyz/docs/. Short version: https://teztopia.xyz/llms.txt.

## What the site is
Teztopia is a walkable 3D town for Tezos art that runs in the browser. The mainland is an old-European coastal village with 67 artist plots (31 of 16 m, 26 of 32 m, 5 of 48 m, 5 of 80 m), the Palazzo delle Arti and public squares. Invited artists build galleries on their plots and hang NFTs from their wallets; visitors walk in, chat and collect on objkt. Up to 50 people share the mainland at once.

## Publishing rules (read first)
- Agents never publish. No tool publishes, signs, spends tez, uploads model files or hangs NFTs.
- `deploy` validates the draft and returns a link. The owner opens it in their plot editor (Share › AI agents › Open in the editor), walks it, and publishes from Share › Publish your whole plot with their wallet's signature (no tez is spent).
- Never ask for a seed phrase, private key or password. Never claim something is published.
- Only build with art and models the owner has the right to show. Token metadata is not proof of authorship.

## Connecting
Remote MCP: https://teztopia.xyz/mcp (Streamable HTTP, stateless; protocol revisions 2024-11-05 to 2026-07-28).
- OAuth 2.1, the site is the authorization server. Metadata: /.well-known/oauth-protected-resource/mcp and /.well-known/oauth-authorization-server. Dynamic client registration or client ID metadata documents; PKCE S256 required; `resource` parameter; public clients, no secrets.
- The owner signs in with their Tezos wallet on /connect and presses Allow. Only invited wallets or plot holders, with a claimed plot. The draft is always of that wallet's plot.
- Access token 1 h; rotating refresh token 30 days; a connection ends after 90 days. Personal bearer tokens (7, 30, 90 days) from account › Connected agents, sent as `Authorization: Bearer <token>`.
- Limits: 60 tool calls a minute and 1,500 a day per wallet; 4 drafts per wallet, 1 MB each, 5 undo steps.
- ChatGPT: chatgpt.com/plugins › + › Add custom MCP server, OAuth, client ID empty. Claude: Settings › Connectors › Add custom connector. Claude Code: `claude mcp add --transport http teztopia https://teztopia.xyz/mcp` then `/mcp`. Codex: `codex mcp add teztopia --url https://teztopia.xyz/mcp` then `codex mcp login teztopia`.

Local MCP (stdio): download https://teztopia.xyz/sdk/third-life-mcp.mjs (Node.js 20+), then
  claude mcp add teztopia -- node "$PWD/third-life-mcp.mjs" --scene "$PWD/my-world.json"
  codex mcp add teztopia -- node "$PWD/third-life-mcp.mjs" --scene "$PWD/scene.json"
Options: --scene <file.json>, --assets <folder> (repeatable), --offline.
Plot folder: `node third-life-pack.mjs init --plot <number>` writes plot.json (cells, entrance, neighbours, limits), scene.json and agent setups. Validate: `node third-life-pack.mjs scene.json --check`. The owner deploys: `node third-life-pack.mjs deploy` (opens the deploy page; the wallet signs).
The local server adds new_scene, open_scene, save_scene, add_model (places a .glb with automatic collision) and export_zip (the ZIP the builder imports).

## Coordinates
- Metres, y up. A cell is 16 x 16 m, 16 m tall. A plot is 16, 32, 48 and 80 m square: 1, 4, 9 or 25 cells, numbered row by row from the north-west.
- Positions are the centre of an object's bounding box from the north-west corner (of the cell, or of the plot in a plot scene). On the ground, y = height / 2.
- North -z, south +z, east +x, west -x. In a plot, the street entrance is the front.
- Tools take degrees; the scene file stores radians. Solid objects turn only around y.
- Boxes crossing a cell border are cut per cell; anything else must lie inside one cell.

## describe_rules (the text the tools return, one-cell scene)
Teztopia scene rules (SDK 0.3.0)

UNITS AND AXES
- Metres. y is up. A scene is one build cell of 16 x 16 m, 16 m tall.
- Positions are relative to the cell's north-west corner: x and z run 0 to 16, y = 0 is the ground.
- Compass words used by the helpers: north = -z, south = +z, east = +x, west = -x.
  Visitors arrive 2 m outside the south edge, at [8, 0, 18], looking north (-z): the south side is the front.
- Angles are DEGREES. yaw turns around the vertical axis, counter-clockwise seen from above:
  yaw 90 turns an object's +x side to face north (-z) and swaps its x and z extents.

OBJECTS (add_objects)
- position is the CENTRE of the object's bounding box. Something of height h standing on the ground has y = h / 2;
  on a floor whose top is at y = f it has y = f + h / 2.
- size is the full extent [x, y, z] before yaw, each above 0 and at most 16. It defaults per shape.
- Shapes:
  box: Rectangular block filling its size box: walls, floors, slabs, steps, plinths, tables. Default size 2 × 2 × 2 m.
  cylinder: Upright cylinder: size x and z are its diameters, size y its height. Columns, posts, round tables. Default 1 × 3 × 1 m.
  sphere: Sphere or ellipsoid filling its size box. Domes (sink the lower half into a roof), lamps, shrubs. Default 2 × 2 × 2 m.
  torus: Ring standing upright in the x–y plane, its hole facing ±z (turn it with yaw). Outer diameter = size x and y; the tube is about a quarter of size z thick. Default 2 × 2 × 2 m.
  vault: Hollow half-round arch shell: spans size x, rises to size y at its crown, runs along size z and is open at both z ends and underneath. Barrel-vault roofs, arcades, tunnels. Default 4 × 2 × 4 m.
  foliage: Leafy fern or shrub filling its size box. Not solid by default. Default 1.5 × 1.5 × 1.5 m.
  frame: Empty picture frame the creator later fills with a Tezos NFT from the builder’s Art tab: a thin box whose picture faces +z (south) at yaw 0, +x (east) at yaw 90, −x (west) at yaw −90 and −z (north) at yaw 180. So on the inside of a north wall use yaw 0, south wall 180, west wall 90, east wall −90. Never solid. Default 2 × 1.6 × 0.08 m; hang it 0.05 m in front of the wall face, its centre about 1.6 m up. add_frames hangs a row of them on a wall for you.
- color is "#rrggbb"; it defaults to the material's colour. material: stone, metal, glass, plaster, copper, plywood, painted, concrete, brick, fabric.
- label names an object; group puts objects in one building group the creator moves as one. Use groups.
- Every object lies wholly inside the cell: x and z within 0..16, bottom at least -0.3, top at most 16.
  Within 1 mm of an edge it is nudged inside; further out it is refused with the distance to move it.

WALKING AND COLLISION
- The visitor is 0.6 m wide and 1.72 m tall, and walks up any ledge of at most 0.28 m.
  Anything taller is a wall; stairs need risers of at most 0.28 m (the helpers use 0.18 m).
- collider: true makes an object solid: visitors cannot walk through it and can stand on it. It defaults to true
  for box, cylinder and vault. A solid object collides as its bounding box (a vault as its arch) and may only turn with yaw;
  tilted pieces (roof slopes, rafters) must be collider: false.
- collisionOnly: true makes an invisible solid box, to give decoration or a model walls and floors.
- Doorways need at least 0.8 m of width and 1.82 m of height (helpers use 1.2 x 2.3 m).
- Over a stair keep 2.1 m of headroom: leave the hole add_stairs returns open in the floor above (add_floor or a room ceiling with that hole).

HELPERS (fastest way to rough out)
- add_room: four walls with a door and windows, a floor and optionally a ceiling, as one group.
  x, z are the room's north-west corner; y is the floor level it stands on. The next storey of a room of
  height h with a ceiling slab t starts at y + h + t (add_room says so).
- add_wall: one straight wall from [x, z] to [x, z], cut for a door and windows. add_floor: a slab with holes.
- add_stairs: a straight flight a visitor walks up; it returns the hole to leave in the floor above.
- list_prefabs / add_prefab: ready old-town pieces (walls with cornices, doorways, arcades, stairs, roofs, a fountain,
  benches, cypresses, three small buildings) placed as one group. Prefabs keep their real height above the level you give.
- add_objects items take repeat: { count, offset } for rows of posts, slats, columns or steps.
- Prefer helpers and prefabs for structure, add_objects for details, update_objects for adjustments, undo to step back.

CHECKING YOUR WORK
- describe_scene: what is where, per group, what a visitor can reach (a real walk test with the game's own movement),
  and what ground is still free.
- preview: a picture of the scene: plans and elevations. Look at it after each round.
- validate: the site’s own checks, and whether every model file can be found.

LIMITS PER SCENE
- 500 objects. 8 different model files, 16 model instances.
- GLB files up to 20 MB each, 48 MB in total; 200,000 triangles per model, 500,000 per scene;
  textures embedded as PNG, JPEG or WebP, up to 16.8 megapixels per model. Draco and KTX2 are refused.
- 8,192 model collision surfaces per scene.

WORKFLOW
- Every change is saved to the scene file at once. undo steps back (up to 30 steps).
- add_model places your own .glb files (static models get the site's automatic collision).
- export_zip writes the ZIP the builder imports: builder.html, Share tab, Import world (or your plot editor).
- Tezos NFTs are hung after import, from the builder's Art tab, into the frames you placed.

## describe_rules addition for a whole plot (example: plot 12, 32 m)
THIS SCENE IS A WHOLE PLOT
- Artist plot 12: 32 x 32 m, 4 cells of 16 m (2 x 2), numbered row by row from the north-west: cell 1 is x 0–16, z 0–16.
- Every tool takes metres from the PLOT's north-west corner: x and z run 0 to 32, y 0 to 16. This replaces the single-cell numbers below.
- The street reaches the plot at [16, 32], on its south side: that is the front. describe_scene walks it from the street.
- The site stores the plot cell by cell. A box (wall, floor, slab, step) that crosses a cell border is cut into one piece per cell:
  it looks and collides as one, keeps its id, and counts once in each cell. Anything else (cylinder, sphere, torus, foliage, a vault
  across its arch, a frame, a model, a prefab's columns and roof) must lie inside one cell; the tools say where it fits.
- LIMITS PER SCENE below are per cell here: each cell holds 500 objects, 16 models from 8 files, 500,000 triangles.
- WEIGHT: this plot publishes at most 100 MB of its own files (models, images) and 800 files: 25 MB and 200 files a cell,
  never more than 100 MB and 800 files without paid extra storage. This, not the 48 MB scene figure below, is what blocks
  publishing. Tezos NFTs hung in frames are token references and do not count.
- plot.json beside the scene names the neighbouring plots, buildings and streets, in the same coordinates.
- When it is ready, run validate. The creator deploys it with `node third-life-pack.mjs deploy` and approves it with their wallet;
  deploy only when they ask.

## Tools (remote server, in working order)
### describe_rules
Read this first. The cell (16 x 16 x 16 m, metres, y up, positions are object CENTRES from the north-west corner), angles in degrees, where visitors arrive, the avatar and what it can climb, shapes, materials, collision, helpers, prefabs and every limit. Changes nothing.
  (no arguments)

### list_drafts
The drafts this wallet keeps for agents: id, plot, name, objects, when and by whom each was last saved, and which one is open. Changes nothing.
  (no arguments)

### new_plot
Start an empty draft of the creator's own plot of the mainland and work on it from now on: every cell of the plot, coordinates in metres from its north-west corner, the street entrance and the neighbours as describe_rules tells them. plot is only for the island host, who may name any plot by number; anyone else builds on the plot their wallet owns. Returns the link the owner opens it with.
  - name: Draft name.
  - description: A sentence about the scene.
  - plot: Host only: the plot number, e.g. "5". Default: the wallet’s own plot.

### open_draft
Work on another of this wallet’s drafts, by id or exact name (list_drafts). The owner may have changed it from the plot editor since; describe_scene shows what is there now.
  - draft (required): Draft id or name.

### describe_scene
What is built now, in one screen of text: each group with its bounds, a walk test from the arrival point with the game’s own movement (which floors a visitor reaches and which they cannot), the ground still free, and things resting on nothing or frames hanging on nothing. Call it after each round of changes. Changes nothing.
  (no arguments)

### preview
A picture of the scene to check your work: by default a ground-floor plan, an upper-floor plan (or the roof), and the south and east elevations, with a 1 m grid. Plans are cut 1.4 m above their level like an architect’s plan (walls cut dark, what is above left out); green marks where a visitor can stand, red floors they cannot reach. Changes nothing.
  - views: Panels, up to four: top (everything from above), plan (cut at each of levels), south, north, east, west (elevations).
  - levels: Floor levels for plan panels, e.g. [0, 3.71]. Default: the levels found.
  - highlight: Ids to draw strongly, with everything else faded.
  - format: png (default, an image) or svg (text).

### list_objects
The objects in the cell: id, label, shape, position (centre), size, yaw in degrees (or rotation when tilted), color, material, collider (solid), group, and locked for scenery the creator has locked. Filter by group or shape. Changes nothing.
  - group: Only objects of this group name.
  - shape: Only objects of this shape.

### add_room
The fastest way to rough out a building: four solid walls whose OUTER faces sit on the footprint x..x+width, z..z+depth (x, z = north-west corner), standing on level y, with a door (default on the south side, 1.2 x 2.3 m), windows, a floor slab (default) and optionally a ceiling with holes for stairs. One group. Returns the inside faces of the walls (for add_frames), the door and where the next storey starts (y + height + ceiling thickness).
  - x (required): West edge of the footprint (minimum x), metres.
  - z (required): North edge of the footprint (minimum z), metres.
  - width (required): Size along x, metres.
  - depth (required): Size along z, metres.
  - height (required): Wall height above the floor, metres.
  - y: Floor level the room stands on, default 0. For an upper storey use the nextStorey a lower room returned.
  - thickness: Wall thickness, default 0.25 m.
  - doorSide: Wall with the door: south (default, facing arriving visitors), north, east, west or none.
  - door: Door size and place; at is measured from the wall’s west or north end. Default centred, 1.2 x 2.3 m.
  - windows: Windows per wall, spread evenly.
  - windowSides: Walls that get windows; default every wall but the door wall.
  - window: Size of counted windows (default 1 m wide, 1.2 m tall, sill at 0.9 m).
  - floor: Floor slab under the room, its top at y. Default true.
  - ceiling: Ceiling slab on top of the walls, default false. Give it a hole over a stair.
  - color: Hex colour such as "#b9ab92". Defaults to the material’s colour (warm stone).
  - material: Surface finish; color still tints it. glass is see-through.
  - label: Name shown in the Objects list, e.g. "North wall".
  - group: Group name. A group is selected and moved as one in the editor; an existing group with this name is joined.

### add_wall
One straight solid wall along its centreline from [x, z] to [x, z], standing on level y, cut for an optional door and windows (sills and lintels are added). One group.
  - from (required): Start of the centreline [x, z].
  - to (required): End of the centreline [x, z].
  - height (required): Wall height, metres.
  - thickness: Wall thickness, default 0.25 m.
  - y: Floor level the wall stands on, default 0.
  - door: true for a centred 1.2 x 2.3 m door, or { at, width, height }.
  - windows: A count spread evenly, or a list of { at, width, height, sill }.
  - window: Size of counted windows (default 1 m wide, 1.2 m tall, sill at 0.9 m).
  - color: Hex colour such as "#b9ab92". Defaults to the material’s colour (warm stone).
  - material: Surface finish; color still tints it. glass is see-through.
  - label: Name shown in the Objects list, e.g. "North wall".
  - group: Group name. A group is selected and moved as one in the editor; an existing group with this name is joined.

### add_floor
A solid slab whose TOP is the walking surface at y, over x..x+width, z..z+depth, with holes left open (for stairs). One group.
  - x (required): West edge (minimum x).
  - z (required): North edge (minimum z).
  - width (required): Size along x.
  - depth (required): Size along z.
  - y: Height of the walking surface, default 0.
  - thickness: Slab thickness, default 0.2 m.
  - hole: A hole to leave open, usually the hole add_stairs returned.
  - holes: Several holes.
  - color: Hex colour such as "#b9ab92". Defaults to the material’s colour (warm stone).
  - material: Surface finish; color still tints it. glass is see-through.
  - label: Name shown in the Objects list, e.g. "North wall".
  - group: Group name. A group is selected and moved as one in the editor; an existing group with this name is joined.

### add_stairs
A straight solid flight a visitor walks up, climbing rise metres toward direction from 'from' (the middle of its bottom edge). Risers stay at or under 0.18 m by default (a visitor climbs up to 0.28 m). Returns the footprint: leave it open in the floor or ceiling above (hole) for headroom, and the point where a visitor steps off at the top.
  - from (required): Middle of the bottom edge of the first step [x, z].
  - direction (required): The way up: north, south, east or west.
  - rise (required): Height to climb, usually the next floor level minus y.
  - y: Level the stair starts from, default 0.
  - width: Width, default 1.2 m.
  - tread: Tread depth, default 0.3 m.
  - maxRiser: Largest riser, default 0.18 m, at most 0.28.
  - color: Hex colour such as "#b9ab92". Defaults to the material’s colour (warm stone).
  - material: Surface finish; color still tints it. glass is see-through.
  - label: Name shown in the Objects list, e.g. "North wall".
  - group: Group name. A group is selected and moved as one in the editor; an existing group with this name is joined.

### add_frames
Hang count empty picture frames evenly along a wall face, for the creator to fill with Tezos NFTs from the Art tab after import. from and to are two points ON THE WALL’S FACE (the insideFaces add_room returns, or a wall’s face line) and must run along x or along z; facing is the way the pictures look (into the room). Frames are not solid and join the group "Frames" unless you name another.
  - from (required): One end of the wall face [x, z].
  - to (required): The other end of the wall face [x, z].
  - facing (required): The way the pictures face: north, south, east or west.
  - count (required): How many frames, spread evenly.
  - width: Frame width, default 2 m.
  - height: Frame height, default 1.6 m.
  - centreHeight: Height of the frames’ centres above the floor level, default 1.6 m.
  - y: Floor level of the room, default 0.
  - label: Name shown in the Objects list, e.g. "North wall".
  - group: Group name. A group is selected and moved as one in the editor; an existing group with this name is joined.

### list_prefabs
Ready old-town pieces to place with add_prefab: three small buildings (studio, loggia, gallery room), walls with plinths and cornices, doorways, windows, floors, stairs and a landing, columns, an arcade bay, a portico, roofs, a balustrade, a bench, a cypress planter, a lemon tree, a lamp post and a fountain. Each with its id, size [x, y, z] in metres at yaw 0 (front facing south), the height its lowest part sits above the level it is placed on, and its piece count. Changes nothing.
  - category: Only this category.

### add_prefab
Place one prefab from list_prefabs as one new group. at is the centre of its footprint [x, z]; y is the floor level it stands on (default 0), and its parts keep their real height above it, so a roof lands on 3.5 m walls built at the same level. yaw turns it in degrees (default 0: its front faces south, toward arriving visitors; 90 east, 180 north, -90 west). scale (default 1) resizes it uniformly. Returns its bounds, doorways and stair ends in cell coordinates.
  - prefab (required): Prefab id from list_prefabs, e.g. "loggia".
  - at: Centre of the footprint [x, z]. Default the middle of the cell, [8, 8], or in a plot scene of its middle cell.
  - y: Floor level it stands on, default 0.
  - yaw: Turn in degrees; 0 faces south (+z). Quarter turns keep it on the grid.
  - scale: Uniform scale, default 1.
  - group: Group name; default the prefab’s name, numbered if taken.
  - models: Use the prefab’s model files where it has them (roof tiles), as the Prefabs shelf does. Default true; false places plain primitives only.

### add_objects
Add a batch of primitives in one step: box, cylinder, sphere, torus, vault, foliage or frame (an empty picture frame for an NFT). Each needs shape and position; size, yaw, color, material, collider, collisionOnly, label, group and id are optional. position is the CENTRE in metres from the cell’s north-west corner: x and z 0–16, y is height, so a box of height h on the ground has y = h / 2. size is [x width, y height, z depth] before yaw; yaw is degrees (90 turns the +x side to face north). The whole object must stay inside the cell. Solid objects (default for box, cylinder, vault) block walking and can be stood on. Example, a 10 x 8 m stone floor and its back wall: {shape:"box", position:[8,0.1,8], size:[10,0.2,8], material:"stone", group:"Room"}, {shape:"box", position:[8,1.7,4.1], size:[10,3,0.2], group:"Room"}. repeat makes rows (posts, slats, columns) in one item. All or nothing: if any object is wrong nothing is added and the reply lists every problem. One Undo step. In a plot scene (new_plot) coordinates run across the whole plot from its north-west corner; a box that crosses a 16 m cell border is cut into one piece per cell, and anything else must lie inside one cell.
  - objects (required): The objects to add, each { shape, position, ... }.

### update_objects
Change existing objects by id in one step. Give each id with only the fields to change: position (new centre), offset (added to the centre, e.g. [2,0,0] moves 2 m east), size, yaw or rotation (degrees), color, material (null clears it), collider, collisionOnly, label, group (a name to join or create, null to leave the group) or shape (between box, cylinder, sphere, torus, vault and foliage). Same coordinates and limits as add_objects. All or nothing, one Undo step. Locked scenery cannot be changed.
  - changes (required): One { id, ...fields to change } per object.

### move_group
Move or turn a whole group as one, the way the editor does: offset adds [dx, dy, dz] (e.g. [0, 0.15, 0] lifts it onto a 15 cm slab), to puts the middle of its footprint at [x, z], and yaw turns it in degrees about the vertical axis through that middle. One Undo step; locked scenery cannot move.
  - group (required): The group’s name, from describe_scene or list_objects.
  - offset: Metres to move it [dx, dy, dz].
  - to: New centre of its footprint [x, z], instead of offset.
  - yaw: Turn in degrees, counter-clockwise seen from above, about its middle.

### remove_objects
Delete objects by id, every member of a group by its name, or both, in one step (one Undo step). Locked scenery cannot be removed.
  - ids: Objects to delete, from list_objects.
  - group: Delete every object of this group.

### undo
Undo the last change (up to 30 steps). A whole add, update, remove, helper or prefab call is one step.
  (no arguments)

### validate
Check the open draft the way the site will: the plot and each cell’s limits, whether the wallet still owns the plot, and which model files the owner’s browser must hold. describe_scene tells what a visitor can reach. Changes nothing.
  (no arguments)

### deploy
Only when the creator asks: check the draft the way the site will and give the creator the link that opens it in their plot editor on the site. There they walk it, change what they like and publish it with their wallet; nothing is published without that signature, and this server never holds a key or publishes. Changes nothing here.
  (no arguments)

## Example call
{"jsonrpc":"2.0","id":7,"method":"tools/call","params":{"name":"add_room","arguments":{"x":4,"z":4,"width":8,"depth":6,"height":3.5,"doorSide":"south","windows":2,"label":"Gallery room"}}}
Invalid arguments return a tool error listing every problem with its path, so fix the whole call at once.

## Scene format
JSON Schema: https://teztopia.xyz/sdk/world.schema.json. "spec": "tezworlds-dev/1", "parcelSize": 16, parcels (cells) with nodes. Shapes: box, cylinder, sphere, torus, vault, foliage, model; a box with galleryFrame: true is an empty NFT frame. Materials: stone, brick, plaster, metal, glass, copper, plywood, painted, concrete, fabric. Prefer the tools to writing the file.

## Limits
Per cell: 500 objects; 16 model instances; 8 different model files; 24 live NFT displays; 8 artworks carrying their own file; 16 portals; 500,000 model triangles.
Per GLB model: 20 MB; 200,000 triangles; 64 materials; 256 draw primitives; 1,000 nodes; 64 images / 128 textures; one image up to 8 MB and 4096 px a side; 16.8 MP of textures in total; 1,000,000 vertices per accessor; 4 animation clips, 64 channels, LINEAR/STEP, translation/rotation/scale only; no skins, morph targets, lights, sparse accessors or external files.
Accepted GLB extensions: EXT_meshopt_compression, KHR_mesh_quantization, EXT_texture_webp, KHR_materials_emissive_strength, KHR_materials_unlit, KHR_materials_specular, KHR_materials_ior, KHR_texture_transform. Draco is decoded only by the builder's own import; the SDK and published files refuse it. KTX2, EXT_mesh_gpu_instancing and KHR_meshopt_compression are refused.
Builder preparation targets: 180,000 triangles, 24 materials, textures 2,048 px, about 3 MB per model; distant copy 30,000 triangles. The SDK uses files as given and warns above these.
Per plot (publish weight): 25 MB and 200 files per cell, ceiling 100 MB and 800 files; signed description 72 KB per cell (min 1 MB, max 1.8 MB). Paid storage: 25 MB add-ons, up to 150 MB (16 m) or 300 MB (larger). NFTs are token references and do not count; their display copies have a quota of 15 MB per cell up to 60 MB.
Textures: WebP at quality 0.85–0.92, at most 2048 px on the long side (1024/512 for small things), powers of two recommended.

## Land (for answering owners' questions)
A plot is a renewable tenure, not ownership and not an investment. Prices in tez, purchase covers the first 3-month term; renewal about 20 % of the purchase price per term; a year is 4 terms for the price of 3. Second plot ×2, third ×4; at most 3 per wallet, 2 touching. Grace 60 days, then the plot reverts (content kept). Resale after 90 days, 5 % fee. Payments are final; corrections are refunded by hand. Prices: https://teztopia.xyz/docs/land.

## Do and don't
Do: describe_rules first; preview and describe_scene after each round; groups; helpers and prefabs for structure; frames on inside wall faces with add_frames; validate; deploy only on request.
Don't: guess units; build from hundreds of tiny boxes; block the street entrance or the gallery sign by the door; claim to hang or buy NFTs; work around limits; copy other people's buildings or brands.