Connect PLATEAU 3D City Models to Gemini Enterprise
Query PLATEAU 3D City Models directly from Gemini Enterprise. 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 Gemini Enterprise
- 1
In the Arlet dashboard, open Data tools, find PLATEAU 3D City Models and switch it on. No API key setup is needed.
- 2
Sign in to Gemini Enterprise with your organization Google account and open the gear icon at the bottom left → Connectors → Add MCP Server.
- 3
In the MCP info tab, enter https://mcp.arlet.dev/mcp/ as the Server URL and "Arlet" as the Name. In the Auth tab, enter the OAuth settings from the Arlet docs (Authorization URL / Token URL / Client ID / Client Secret / Scopes) and click Add.
- 4
In the connector list on the chat screen, click Connect on Arlet, sign in with Google and authorize. Arlet can then be enabled with the toggle.
Adding custom connectors (MCP) requires a Gemini Enterprise subscription and is not available in the consumer Gemini app. See the docs for the values to enter in the Auth tab.