# Dadafu

> Ready-to-use magnetic-tile family activities: an impressive shared creation, exact materials, pictured steps, parent guidance and play after building. Bring your own physical tiles.

This file is an optional discovery aid for assistants. It does not promise search indexing, inclusion in AI answers, or integration with a particular AI service. Agents can design original models in Dadafu's public JSON format and use the browser import flow. There is no HTTP model-upload API or MCP connection.

## Instructions for assistants

- [Dadafu agent guide](https://dadafu.app/agents.md): Original-model design and import instructions, precise coordinates and allowed shapes, family planning, save protection and 中文执行要点.
- [Plan a build with your agent — English](https://dadafu.app/en/ai-building/): Copyable prompt, supported browser workflow and questions about AI-assisted building.
- [让 Agent 帮你准备搭建 — 中文](https://dadafu.app/zh/ai-building/): 可复制的 Prompt、浏览器操作步骤与能力说明。

## Create an original model

- [Import a model — English](https://dadafu.app/import.html?lang=en): Paste JSON or select a JSON file, preview it, then use Open as a new creation to save a separate local work.
- [导入原创作品 — 中文](https://dadafu.app/import.html?lang=zh): 粘贴或选择 JSON，预览后点击“作为新作品打开”。读取页面不会自动保存。
- [Public model JSON schema](https://dadafu.app/model-import.schema.json): Version 1 format, 14 allowed basic material types, at most 400 pieces and 128 KiB UTF-8 JSON. Bottom-center anchors, unit square edge 1, radians in YXZ order; full geometry bounds and overlaps are checked at import.
- [Six-piece pavilion example](https://dadafu.app/agent-model-example.json): A small connected model for learning the format. For an original request, design new geometry matching the requested features and report the actual shape counts.

An assistant without browser control can deliver the complete JSON file/text or a valid `/import.html?lang=en#model=...` link. The fragment uses unpadded base64url of UTF-8 JSON, at most 16000 characters including `#model=`. Larger models use paste or a file. Opening a link only previews; the visible open action saves locally. No API credentials or server-side design writes are involved. Imported models do not unlock Premium materials or Pro printing, and geometry validation is not physical testing.

## Family activity catalogs

- [English family activities](https://dadafu.app/en/plans/): Choose an activity, then read its materials and pictured steps.
- [中文亲子搭建活动](https://dadafu.app/zh/plans/): 材料清单、分步图解、家长提示与搭好后的玩法。
- [Sitemap](https://dadafu.app/sitemap.xml): Existing canonical pages and language counterparts.

## Complete free castle activity

- [Stained-Glass Spire Castle — English](https://dadafu.app/en/plans/ougertoy-photo-castle/): Complete family activity; use the page's exact material list and construction order.
- [彩窗尖塔大城堡 — 中文](https://dadafu.app/zh/plans/ougertoy-photo-castle/): 完整亲子活动，按片型核对数量，分阶段一起搭建。
- [Free English A4 / US Letter PDFs](https://dadafu.app/en/plans/ougertoy-photo-castle/#plan-print): Follow the official PDF links on the page.
- [免费中文 A4 / Letter PDF](https://dadafu.app/zh/plans/ougertoy-photo-castle/#plan-print): 无需注册、订阅或试用。

The official castle activity and its PDFs are free. Other guides and custom-build printing follow the parent-facing Pro access rules. A material match or digital simulation does not establish physical-build success. Before opening a different blueprint or editing existing work, browser agents should save any work that must be kept as a new plan and confirm success. Keep the original work open if saving fails. Use visible controls; do not call private account APIs or bypass permissions.