Connect PLATEAU 3D City Models to ChatGPT
Query PLATEAU 3D City Models directly from ChatGPT. Arlet links the two through one MCP connection and takes care of API keys.
This entry connects your AI client to the official PLATEAU MCP server operated by Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT). Project PLATEAU publishes open 3D city models - buildings, roads, urban planning zones, flood risk areas and more - for cities across Japan.
Through the gateway you can search the PLATEAU dataset catalog by city or data type, retrieve CityGML file listings and building attributes for a given area, and obtain 3D Tiles / MVT streaming URLs that can be loaded into map viewers.
Note: the PLATEAU distribution service is operated on a trial basis. Schemas and responses may change without notice, and no service level is guaranteed. Data follows the Japanese government's standard terms of use (commercial use allowed with attribution).
How to connect PLATEAU 3D City Models to ChatGPT
- 1
In the Arlet dashboard, open Data tools, find PLATEAU 3D City Models and switch it on. No API key setup is needed.
- 2
In ChatGPT, open Settings → Plugins → Browse plugins and click + at the top right.
- 3
In the New Plugin form, enter "Arlet" as the Name, choose Server URL for Connection and enter https://mcp.arlet.dev/mcp/, pick OAuth for Authentication, check the risk acknowledgement and click Create.
- 4
Open the Arlet plugin you created, click Sign in with Arlet, sign in with Google and click Allow. The connection is complete.
If the Plugins screen is not shown, turn on Developer mode under Settings → Security and login.