Finance Toolkit
500+ transparent financial methods calculated from raw statements, not third-party endpoints.
제작자가 쓴 설명(영어 원문)
MCP server for retrieving Japanese stock market data via J-Quants API v2
이 세 가지는 절대 하나의 점수로 합치지 않아요. 의견, 측정, 인기는 서로 다른 것이니까요.
이 서버는 아직 쉬운 말로 된 요약을 쓰지 못했어요. 아래는 레지스트리에서 읽어 온 사실이에요.
쓰고 있는 AI 앱을 고른 다음 설정을 복사하세요.
필요한 것
어떤 앱을 쓰세요?
위에서 앱을 고르세요. 기억해 두었다가 다음부터는 버튼에 “…에 설치”라고 표시해요.
Claude Desktop → Settings → Developer → Edit Config를 열고 claude_desktop_config.json에 이 내용을 붙여 넣으세요
{
"mcpServers": {
"jquants": {
"command": "uvx",
"args": [
"jquants-mcp"
]
}
}
}터미널에서 이 명령어를 실행하세요
claude mcp add jquants -- uvx jquants-mcp프로젝트의 .cursor/mcp.json 또는 ~/.cursor/mcp.json에 붙여 넣으세요
{
"mcpServers": {
"jquants": {
"command": "uvx",
"args": [
"jquants-mcp"
]
}
}
}브라우저가 앱을 열지 물어본 다음, 앱이 설정을 보여 주고 확인을 요청해요. 키 값은 비워 두니 직접 입력하세요.
프로젝트의 .vscode/mcp.json에 붙여 넣으세요
{
"servers": {
"jquants": {
"type": "stdio",
"command": "uvx",
"args": [
"jquants-mcp"
]
}
}
}브라우저가 앱을 열지 물어본 다음, 앱이 설정을 보여 주고 확인을 요청해요. 키 값은 비워 두니 직접 입력하세요.
이 서버는 내 컴퓨터에서 실행되는데, ChatGPT는 인터넷에 있는 서버에만 연결할 수 있어요. 다른 앱을 고르세요.
선택한 앱은 이 기기의 쿠키에만 저장돼요. 계정은 필요 없어요.
이 설정은 제작자의 레지스트리 정보로 만들었어요. README와 다르면 README를 따르세요.
내 컴퓨터에서 실행돼요. 설치하면 AI 앱에 도구 목록이 나타나요.
누구나 볼 수 있는 정보를 점검했고, 코드는 읽지 않았어요. 해당하지 않는 항목은 개수에서 뺐어요. · 2026년 11월 8일 점검
레지스트리 이름이 GitHub 계정 shigechika 기준으로 확인되었고, 이 계정이 저장소를 소유하고 있어요
아직 GitHub에서 이 저장소를 읽어 오지 않았어요
아직 GitHub에서 이 저장소를 읽어 오지 않았어요
내 컴퓨터에서 실행되는 서버라 인터넷 엔드포인트가 없어요
내 컴퓨터에서 실행되며, 대신 로컬 설정을 사용해요
내 컴퓨터에서 실행돼요. 도구 목록은 인터넷 엔드포인트가 있는 서버에서만 읽을 수 있어요
레지스트리에서 이 카테고리의 활성 서버 전체와 비교했어요. 스타는 게시자가 저장소를 소유한 경우에만 세요.
해당하는 기본 점검 1개 중 1개를 통과했어요. 코드는 읽지 않았어요. 키나 토큰을 넣기 전에 서버가 어떤 권한을 요구하는지 확인하고, 꼭 필요한 권한만 있는 키를 쓰세요.
레지스트리에 필수 키가 나와 있지 않아요. 다만 처음 쓸 때 로그인을 요구하는 서버도 있어요.
내 컴퓨터에서 실행돼요. AI 앱이 필요할 때 실행하고, 데이터는 제작자의 서버를 거치지 않아요(서버 자체가 온라인 서비스를 호출하는 경우는 제외).
GitHub 저장소는 마지막으로 – 변경됐고, 최신 버전(1.5.2)은 13일 전 레지스트리에 올라왔어요.
Claude Desktop, Claude Code, Cursor, VS Code처럼 MCP를 지원하는 앱에서 쓸 수 있어요. 내 컴퓨터에 Python (uv)도 있어야 해요.
같은 카테고리에는: Finance Toolkit, SolidInvoice, Korea Tax Calculator
같은 카테고리에서 다른 제작자가 만든 서버예요. 스타 순으로 정렬했어요.
카드 보는 법:↓ 주간 다운로드i★ GitHub 스타i세 기둥: 리뷰 · 점검 · 사용 정도i업데이트 = 최신 버전을 레지스트리에 공개한 날i
500+ transparent financial methods calculated from raw statements, not third-party endpoints.
Create and send invoices and quotes, manage clients, and track payments in SolidInvoice.
Korean tax calculation and tax-audit judgment MCP: 96 tools with statutory citations.
제작자의 저장소에서 쓰인 그대로 가져왔어요. PopNx MCP가 검토하거나 보증한 내용이 아니에요. HTML, 이미지, 스크립트는 제거했어요. 링크를 누르면 이 사이트를 벗어나요.
English | 日本語
An MCP (Model Context Protocol) server that retrieves Japanese stock market data via J-Quants API v2.
User-facing documentation site: https://shigechika.github.io/jquants-mcp/ (also available in 日本語) — start there if you want a gentler 5-minute introduction. This README is the technical reference (config schema, all 55 tools with parameter tables, deployment).
Release history and changelog: GitHub Releases.
Deployment shapes and how to pick between them: see docs/deploy/.
24-second loop showing real output from the Claude iPhone app calling jquants-mcp tools:
get_sector_performanceget_top_turnover_valueget_candlestick_dataget_fins_summaryget_comparison_chart_dataIndividual frames are in docs/screenshots/.
# Using uv (recommended)
uv pip install jquants-mcp
pip install jquants-mcp
git clone https://github.com/shigechika/jquants-mcp.git
cd jquants-mcp uv sync --dev
Settings are loaded with the following priority (later wins):
~/.jquants-api/jquants-api.toml — API key only (J-Quants official config)~/.config/jquants-mcp/config.ini (user global)./config.ini (current directory)If you already use jquants-api-client, your API key is automatically read from ~/.jquants-api/jquants-api.toml. No extra configuration needed.
jquants-mcp login
Opens a browser to J-Quants (AWS Cognito, PKCE flow), and on success writes the API key to ~/.config/jquants-mcp/config.ini (mode 0600). Same auth backend as the official jquants-cli. Use jquants-mcp logout to clear the saved key.
MCP-specific settings (cache, client behavior):
[jquants]
[client]
[server]
| Variable | Required | Default | Description |
|---|---|---|---|
JQUANTS_API_KEY | No* | — | J-Quants API key |
JQUANTS_API_TOML_PATH | No | ~/.jquants-api/jquants-api.toml | Path to the J-Quants official config file. Override to avoid macOS 26+ launchd sandbox restrictions (see macOS launchd note below) |
JQUANTS_PLAN | No | auto-detect | Plan: free / light / standard / premium (auto-detected from the API key at server startup; set this variable only to override) |
JQUANTS_CACHE_DIR | No | ~/.cache/jquants-mcp | Cache directory path |
JQUANTS_BASE_URL | No | https://api.jquants.com/v2 | API base URL |
MAX_RETRIES | No | 5 | Max retry attempts for failed requests |
RETRY_BASE_DELAY | No | 1.0 | Base delay (seconds) for exponential backoff |
MAX_PAGES | No | 10 | Max pages to fetch per paginated request |
JQUANTS_MCP_USER | No | — | Identity of the authenticated user, injected by the gateway (see Authentication). Never set this by hand |
MCP_ENCRYPTION_KEY | No | — | Passphrase for AES-256-GCM encryption of per-user API keys |
MCP_ENCRYPTION_KEY_PREVIOUS | No | — | Previous encryption passphrase — enables dual-key decrypt during a rotation window. See secrets rotation runbook |
RATE_LIMIT_PER_MINUTE | No | 60 | Per-user request ceiling (multi-user mode). Applies per JQUANTS_MCP_USER identity |
RATE_LIMIT_BURST | No | 20 | Per-user burst allowance (token-bucket capacity) |
JQUANTS_ALLOWED_EMAILS | No | — | Comma-separated allowlist of emails. Empty = allow any user the gateway authenticated (self-host default). Set this on public Cloud Run instances to restrict access; unauthorized users get a 403-style message pointing them to self-host |
\* API key is auto-detected from ~/.jquants-api/jquants-api.toml. Set JQUANTS_API_KEY only to override.
Environment variables override both config.ini and jquants-api.toml. This allows MCP clients (Claude Desktop, Claude Code, Codex, …) to pass settings via their env block while keeping defaults elsewhere.
If you run jquants-mcp as a macOS LaunchAgent and the API key lives in ~/.jquants-api/jquants-api.toml, the server may silently hang during startup on macOS 26 or later. The TCC sandbox applied to launchd-spawned processes blocks open() on some dotfiles under $HOME (mode 600), and the process never finishes starting.
Workaround: copy the toml outside the sandboxed home hierarchy and point the server at it via JQUANTS_API_TOML_PATH:
sudo mkdir -p /usr/local/etc/jquants-mcp
sudo cp ~/.jquants-api/jquants-api.toml /usr/local/etc/jquants-mcp/jquants-api.toml sudo chown "$USER":staff /usr/local/etc/jquants-mcp/jquants-api.toml sudo chmod 600 /usr/local/etc/jquants-mcp/jquants-api.toml
Then add the following to your LaunchAgent plist's EnvironmentVariables dict:
<key>JQUANTS_API_TOML_PATH</key>
/usr/local/etc/jquants-mcp/jquants-api.toml
Alternatives: set JQUANTS_API_KEY directly in the plist (simpler but puts the key in a plist file that Time Machine / iCloud may back up), or put api_key = directly in ~/.config/jquants-mcp/config.ini (if that path is not sandbox-blocked on your macOS version).
Linux/systemd and other init systems are not affected.
The server speaks stdio only and binds no network socket, so it performs no authentication of its own — there is no listener to authenticate against. Access control is a property of whoever starts the process:
| Deployment | Who controls access |
|---|---|
| Local (Claude Code, Claude Desktop, Codex, …) | The OS. The MCP client spawns the server as a subprocess; the API key comes from config.ini / jquants-api.toml / JQUANTS_API_KEY |
| Remote | A gateway in front of the server. The gateway terminates authentication and spawns the stdio server per session |
For remote or multi-user deployments, put a gateway in front of the stdio server. mcp-stdio serve is the gateway both production deployments use: it accepts MCP over HTTP, authenticates the caller, and spawns one jquants-mcp child process per session.
The gateway passes the authenticated identity down to that child as the JQUANTS_MCP_USER environment variable (mcp-stdio serve --trusted-user-header X-Forwarded-Email --user-env JQUANTS_MCP_USER). One child process serves exactly one principal for its whole lifetime, and the server reads JQUANTS_MCP_USER as that principal's verified email — it applies the JQUANTS_ALLOWED_EMAILS allowlist and per-user rate limits to it, and looks up that user's stored API key.
Trust model:
JQUANTS_MCP_USERis trusted as-is; the server does no verification of its own. Whoever can set the child process's environment *is* that user, so the variable must be injected by the gateway and never by a user-supplied value.
When JQUANTS_MCP_USER is absent — the normal local case — the server runs single-user against the globally configured API key.
A worked example of the whole shape (auth proxy in front, gateway, stdio child, cache download) is scripts/entrypoint-stdio.sh, the entrypoint of the Cloud Run deployment described below. There is no other documented remote-access story: the server itself has no transport, TLS, or token options.
When the server receives a gateway identity (JQUANTS_MCP_USER, see Authentication) and MCP_ENCRYPTION_KEY is configured, it operates in multi-user mode: each user stores their own J-Quants API key on the server, and all data tools use that key automatically. All users share the read cache; each user gets an independent J-Quants client with isolated rate limiting and their own plan's date-range window.
sequenceDiagram
participant U as User participant C as MCP client participant G as Gateway (mcp-stdio serve) participant S as jquants-mcp (stdio child) participant J as J-Quants API U->>C: Connect C->>G: Authenticate (gateway's own auth layer) G->>S: Spawn child with JQUANTS_MCP_USER = verified email U->>C: "Register my J-Quants API key: " C->>G: register_api_key(api_key=" ") G->>S: forward over stdio S->>J: Probe plan-specific endpoints (auto-detect) J-->>S: Detected plan S->>S: Encrypt & store key + plan (AES-256-GCM) S-->>C: {"status": "ok", "plan": " "} U->>C: "Get TOPIX daily prices" C->>S: get_indices_bars_daily_topix(...) S->>J: API call with user's key J-->>S: Data S-->>C: Result
| Tool | Required | Description |
|---|---|---|
register_api_key | JQUANTS_MCP_USER + MCP_ENCRYPTION_KEY | Encrypt and store your J-Quants API key |
delete_api_key | JQUANTS_MCP_USER + MCP_ENCRYPTION_KEY | Remove your stored key |
Both tools return an explanatory error instead of failing silently when either requirement is missing.
Registering a key (tell your AI agent):
"Register my J-Quants API key:
"
The agent calls register_api_key(api_key="..."). The server probes plan-specific endpoints with the key to auto-detect the plan (free / light / standard / premium) and stores it alongside the encrypted key — no manual selection needed. Subsequent tool calls use the detected plan for rate limiting and date-range restrictions.
This is the only way to register a key on a multi-user deployment; the server exposes no web form and no HTTP endpoint of any kind.
MCP_ENCRYPTION_KEY, with a random 16-byte salt per encryption앞부분만 보여 드려요. 나머지는 저장소에서 읽어 보세요