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J-Quants

Verified Integration
Author: @ajtgjmdjp•Category: ServerApplication
GitHub Repository
JSON-RPC 2.0
Protocol Standard
Sub-second
Execution Latency
Active
Operational Status
Tags:#Claude#Search#Database#API#Git#AI#GitHub#Node.js

Client Configuration

— Connect J-Quants to Claude Desktop or Cursor in seconds
{
  "mcpServers": {
    "j-quants": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-j-quants"
      ],
      "env": {}
    }
  }
}
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).
Architecture & Capabilities

System Overview

Provides a Model Context Protocol server to access official Japanese stock market data from the J-Quants API.

Indexed Date

7/23/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for J-Quants

J-Quants MCP (Model Context Protocol) is a server that provides easy access to official Japanese stock market data directly from the J-Quants API. It's designed for data scientists and ML engineers working with financial data.

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