BULC Building Designer

Instructions

Implementation Reference

• src/tools/furniture.ts:253-260 (handler)

  Core handler logic: validates input using ListCatalogSchema and sends 'list_furniture_catalog' action to BULC client.

  case "bulc_list_furniture_catalog": {
    const validated = ListCatalogSchema.parse(args);
    result = await client.sendCommand({
      action: "list_furniture_catalog",
      params: validated,
    });
    break;
  }

• src/tools/furniture.ts:200-204 (schema)

  Zod validation schema for tool parameters: category (optional string), search (optional string), limit (optional positive integer).

  const ListCatalogSchema = z.object({
    category: z.string().optional(),
    search: z.string().optional(),
    limit: z.number().int().positive().optional(),
  });

• src/tools/furniture.ts:9-37 (registration)

  Tool metadata registration including name, description, input schema, and annotations (read-only, non-destructive).

  {
    name: "bulc_list_furniture_catalog",
    description:
      "Get a list of available furniture items from the catalog. " +
      "Use category filter to narrow down results. " +
      "Returns catalog IDs needed for bulc_place_furniture.",
    inputSchema: {
      type: "object" as const,
      properties: {
        category: {
          type: "string",
          description:
            "Filter by category (e.g., 'Seats', 'Tables', 'Beds', 'Doors', 'Windows', 'Lights')",
        },
        search: {
          type: "string",
          description: "Search by name (partial match)",
        },
        limit: {
          type: "integer",
          description: "Maximum number of results to return. Default: 20",
        },
      },
    },
    annotations: {
      readOnlyHint: true,
      destructiveHint: false,
    },
  },

• src/index.ts:40-51 (registration)

  Global tool registry: includes furnitureTools in the complete list of MCP tools served via listTools.

  const allTools = [
    ...contextTools,      // 8 tools: spatial context, home info, levels, undo/redo, save
    ...roomTools,         // 5 tools: create, create_polygon, list, modify, delete
    ...wallTools,         // 5 tools: create, create_rectangle, list, modify, delete
    ...furnitureTools,    // 5 tools: catalog, place, list, modify, delete
    ...fdsDataTools,      // 7 tools: get, fire_source, detector, sprinkler, hvac, thermocouple, clear
    ...meshTools,         // 5 tools: list, create, auto, modify, delete
    ...simulationTools,   // 4 tools: get_settings, time, output, ambient
    ...fdsRunTools,       // 6 tools: preview, validate, export, run, status, stop
    ...resultTools,       // 5 tools: open_viewer, list_datasets, point_data, aset, report
    ...evacTools,         // 25 tools: setup, stairs, agents, run, results, advanced features
  ];

• src/index.ts:78-80 (handler)

  Main MCP callTool dispatcher routes furniture tools (including bulc_list_furniture_catalog) to handleFurnitureTool.

  // Furniture tools
  if (name.startsWith("bulc_") && name.includes("furniture")) {
    return await handleFurnitureTool(name, safeArgs);