Connect J-Quants to Gemini Enterprise
Query J-Quants directly from Gemini Enterprise. Arlet links the two through one MCP connection and takes care of API keys.
This server connects your AI client to J-Quants API V2, the official market data API operated by JPX Market Innovation & Research (Japan Exchange Group). It provides pro-grade Japanese equities data collected directly from the exchange.
Key features:
- Look up listed companies (name, sector, market segment) by issue code or by company-name keyword.
- Fetch daily OHLC bars (open/high/low/close, volume, turnover, and split-adjusted figures) for any listed stock, over a date range.
- Fetch quarterly financial summaries built from TDnet earnings reports (kessan tanshin).
- Check upcoming earnings announcement dates and the trading calendar (market holidays).
Using the API requires a J-Quants account and an API key issued from the J-Quants dashboard. A free plan is available (data is delayed; paid plans unlock fresher data, longer history, and higher rate limits - the free plan allows 5 requests per minute). Set the key as JQUANTS_API_KEY in your Arlet environment variables.
How to connect J-Quants to Gemini Enterprise
- 1
In the Arlet dashboard, open Data tools, find J-Quants, set the API key issued by J-Quants and switch it on.
- 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.