Adrian PerezandClaude Opus 4.7
570c605446
Resources: pascal://scene/current (JSON), /scene/current/summary
(markdown with per-level counts, floor areas, bbox), /catalog/items
(returns catalog_unavailable in headless mode), and the templated
pascal://constraints/{levelId} which exposes slabs + wall footprints
via @pascal-app/core/wall helpers.
Prompts: from_brief (generate scene from a natural-language brief),
iterate_on_feedback (minimal-diff patch proposals), and
renovation_from_photos (orchestrates the vision tools).
17 tests, all passing.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
62 lines
2.4 KiB
TypeScript
62 lines
2.4 KiB
TypeScript
import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
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import { z } from 'zod'
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import type { SceneBridge } from '../bridge/scene-bridge'
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const PREAMBLE = [
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'You are a Pascal 3D scene designer.',
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'You have access to the `apply_patch` tool for all scene mutations. Prefer it over individual create_* tools so that your changes land as a single undoable step.',
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'Build incrementally. Starting from an empty scene, first create a Site, then a Building, then one or more Levels; only after that do you create walls, zones, slabs, items, and openings.',
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'Respect these invariants:',
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' - Levels live under a Building.',
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' - Walls, fences, zones, slabs, ceilings, roofs, stairs live under a Level.',
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' - Doors and windows live under a Wall (parentId = wallId).',
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' - Items live under a Wall, Ceiling, or Site.',
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'Use realistic dimensions in meters. Keep wall thickness small (0.1–0.3 m) and ceiling height 2.4–3.0 m unless the brief dictates otherwise.',
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'Respond ONLY with tool calls. Do not produce verbose narrative or prose; keep any explanations in short tool-call arguments.',
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].join('\n')
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/**
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* Build the user-facing prompt text for `from_brief`. Pure function for testability.
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*/
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export function buildFromBriefPrompt(args: {
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brief: string
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constraints?: string | undefined
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}): string {
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const parts: string[] = [PREAMBLE, '', '## Brief', args.brief.trim()]
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if (args.constraints && args.constraints.trim().length > 0) {
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parts.push('', '## Constraints', args.constraints.trim())
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}
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parts.push(
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'',
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'## Task',
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'Produce a plan of `apply_patch` calls that realises the brief within the stated constraints. Start from an empty site. Call the vision / query tools only if you need extra context.',
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)
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return parts.join('\n')
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}
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export function registerFromBrief(server: McpServer, _bridge: SceneBridge): void {
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server.registerPrompt(
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'from_brief',
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{
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title: 'Generate a Pascal scene from a brief',
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description:
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'Produces a plan of apply_patch calls to create a scene from a natural-language brief.',
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argsSchema: {
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brief: z.string(),
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constraints: z.string().optional(),
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},
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},
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async ({ brief, constraints }) => ({
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messages: [
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{
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role: 'user',
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content: {
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type: 'text',
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text: buildFromBriefPrompt({ brief, constraints }),
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},
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},
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],
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}),
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)
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}
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