Arlet

Connect Japan Road Traffic Volume to Copilot Studio

Query Japan Road Traffic Volume directly from Copilot Studio. Arlet links the two through one MCP connection and takes care of API keys.

This server connects your AI client to the Traffic Volume API, operated by the Japan Road Traffic Information Center (JARTIC) for the Ministry of Land, Infrastructure, Transport and Tourism (MLIT). It serves directional vehicle counts measured by roughly 2,600 permanent traffic counters (loop/ultrasonic and CCTV-AI counters), mainly on national routes (δΈ€θˆ¬ε›½ι“).

Key features:

  • Query by bounding box and observation time (JST), at 1-hour or 5-minute aggregation.
  • Each observation point returns its coordinates, point code, and up/down direction counts split into small vehicles, large vehicles and unclassified, with missing-data flags.
  • Retention: about 3 months for hourly values, about 1 month for 5-minute values.

Usage notes: the values are reference values, not official MLIT survey results, and the terms of use require the attribution shown in every response (this server includes it automatically). Query area per request is capped to roughly a city-sized bounding box to respect the API's fair-use rules.

How to connect Japan Road Traffic Volume to Copilot Studio

  1. 1

    In the Arlet dashboard, open Data tools, find Japan Road Traffic Volume and switch it on. No API key setup is needed.

  2. 2

    Sign in to Copilot Studio with your work account, create a new agent (or open an existing one), and in the Build tab choose Tools β†’ + β†’ Add β†’ Model Context Protocol (MCP) in the right panel.

  3. 3

    In the Add MCP server form, enter "Arlet" as the Server name, https://mcp.arlet.dev/mcp/ as the Server URL, choose OAuth 2.0 for Authentication and "Dynamic (detected)" for Configuration type, then click Add. No Client ID / Secret is needed.

  4. 4

    On the Select a connection screen, choose Create new connection β†’ Create, then sign in with Google on the Arlet authorization screen and click Allow. Click Add to attach the tool to the agent, then Publish to use it from Microsoft 365 Copilot.

Requires a Microsoft work account and a Copilot Studio license (or trial). MCP is available only for agents using generative orchestration and not in Copilot Studio in Teams.

Use Japan Road Traffic Volume with other AI clients