J-Quants MCP Server

by shigechika Your server? Claim it

local only

J-Quants MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 2 013 installs a week from pypi. Last commit 26 Oct 2026.

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

Installs per day peak 964 · avg 229 · +143% w/w

a month agotoday

2 013

Installs / week

pypi · jquants-mcp

Stars

8 open issues

26 Oct 2026

Last commit

from GitHub

MIT

License

Python

Nothing serious here today

Today is the operative word: we check J-Quants MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add jquants-mcp -- uvx jquants-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

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

~/.codex/config.toml

[mcp_servers.jquants-mcp]
command = "uvx"
args = ["jquants-mcp"]

.cursor/mcp.json

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

.vscode/mcp.json

{
  "servers": {
    "jquants-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "jquants-mcp"
      ]
    }
  }
}

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J-Quants MCP — questions

Answers built from our own checks of this server.

Why is there no uptime for J-Quants MCP?

J-Quants MCP runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the pypi package jquants-mcp was installed 2 013 times last week.

How do I connect J-Quants MCP?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls jquants-mcp straight from pypi; nothing to host, nothing to sign up for.

How many people use J-Quants MCP?

The pypi package jquants-mcp was installed 2 013 times in the last week. Week over week that is +143%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is J-Quants MCP open source?

Yes — it is published under the MIT licence, written in Python, 3 stars on GitHub and 8 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.