How do I install Jquants?

Jquants is a local plugin. Install it using PyPI package: jquants-mcp and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

What AI apps work with Jquants?

Jquants uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Jquants MCP Server

by shigechika

Developer ToolsUse Caution4.2LocalNew

Free

MCP server for retrieving Japanese stock market data via J-Quants API v2

About

MCP server for retrieving Japanese stock market data via J-Quants API v2

Security Report

4.2

Use Caution4.2High Risk

jquants-mcp is a well-structured MCP server for Japanese stock market data with thoughtful security architecture including OAuth 2.1, AES-256-GCM encryption, and plan-aware rate limiting. However, several code quality issues and potential security gaps warrant attention: incomplete input validation on some parameters, overly broad exception handling in critical paths, sensitive data logged in error messages, and lack of CSRF protection in OAuth flows. The multi-user mode's encryption is sound but relies on secure key management outside the application. Permissions are appropriate for the stated purpose (market data APIs and file I/O). Supply chain analysis found 5 known vulnerabilities in dependencies (0 critical, 3 high severity). Package verification found 1 issue.

3 files analyzed · 16 issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

env_vars

Check that this permission is expected for this type of plugin.

File System Read

Reads files on your machine. Normal for tools that analyze or process local data.

File System Write

Writes or modifies files on your machine. Check that this is expected for the tool.

HTTP Network Access

Connects to external APIs or services over the internet.

network_https

Check that this permission is expected for this type of plugin.

system_info

Check that this permission is expected for this type of plugin.

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-shigechika-jquants-mcp": {
      "args": [
        "jquants-mcp"
      ],
      "command": "uvx"
    }
  }
}

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Jquants MCP Server

About

Security Report

Findings (16)Action required

Permissions Required

How to Install

Reviews

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