Opendart Fss

한국어

MCP server for Korea's DART (Financial Supervisory Service) corporate disclosure API.

What is OpenDART?

DART (Data Analysis, Retrieval and Transfer System) is Korea's equivalent of the SEC's EDGAR system. It is the official electronic disclosure system operated by the Financial Supervisory Service (FSS) where all Korean corporations submit their financial reports, major event disclosures, and shareholding information.

OpenDART provides a public API to access this data programmatically.

Features

• 85 tools covering 7 categories — disclosure search, financial statements, periodic reports, shareholding, major events, securities registration, and utilities
• Runs as a stdio or HTTP (Streamable HTTP) MCP server
• Works with Claude Desktop, Claude Code, and any MCP-compatible client
• Smart company search — 6-tier search with Korean initial consonant (chosung) matching and fuzzy typo correction
  • "삼성전자" exact match, "삼성" prefix, "전자" substring
  • "ㅅㅅㅈㅈ" chosung → 삼성전자, "ㅅㅅSDI" mixed → 삼성SDI
  • "삼선전자" fuzzy → 삼성전자
• Built on FastMCP and opendart-fss SDK

Prerequisites

• Python 3.14+
• uv (recommended package manager)
• OpenDART API Key — get one free at opendart.fss.or.kr

Installation

uv pip install opendart-fss-mcp

Or install from source:

git clone https://github.com/hypn4/opendart-fss-mcp.git
cd opendart-fss-mcp
uv sync

Configuration

Copy .env.example to .env and set your values:

cp .env.example .env

Variable	Description	Default
OPENDART_API_KEY	OpenDART API key (required)	—
OPENDART_MCP_TRANSPORT	Transport protocol: stdio | http	stdio
OPENDART_MCP_HOST	HTTP bind address	127.0.0.1
OPENDART_MCP_PORT	HTTP port	8000
OPENDART_MCP_LOG_LEVEL	Log level: DEBUG | INFO | WARNING | ERROR | CRITICAL	INFO

Usage

Claude Desktop

Add to your Claude Desktop configuration (claude_desktop_config.json):

From PyPI:

{
  "mcpServers": {
    "opendart": {
      "command": "uvx",
      "args": [
        "--from", "opendart-fss-mcp",
        "opendart-mcp"
      ],
      "env": {
        "OPENDART_API_KEY": "your_api_key_here"
      }
    }
  }
}

From source:

{
  "mcpServers": {
    "opendart": {
      "command": "uv",
      "args": [
        "run",
        "--directory", "/path/to/opendart-fss-mcp",
        "opendart-mcp"
      ],
      "env": {
        "OPENDART_API_KEY": "your_api_key_here"
      }
    }
  }
}

Claude Code

From PyPI:

claude mcp add opendart -e OPENDART_API_KEY=your_api_key_here -- uvx --from opendart-fss-mcp opendart-mcp

From source:

claude mcp add opendart -e OPENDART_API_KEY=your_api_key_here -- uv run --directory /path/to/opendart-fss-mcp opendart-mcp

CLI

# stdio mode (default)
opendart-mcp

# HTTP mode
opendart-mcp --transport http --host 127.0.0.1 --port 8000

FastMCP

fastmcp run src/opendart_fss_mcp/server.py:mcp

Example Prompts

Show me Samsung Electronics' 2024 consolidated financial statements

Compare revenue and operating profit for Samsung, SK Hynix, and LG Electronics in 2023

Who are the largest shareholders of Hyundai Motor?

What dividends did Samsung pay last year?

Search for M&A-related disclosures from January to June 2024

Has Samsung announced any convertible bond issuances recently?

Show me the executive compensation for POSCO Holdings

What is the auditor's opinion on Kakao's financial statements?

Available Tools

85 tools organized into 7 categories:

Category	Prefix	Tools	Description
Disclosure	disclosure_	5	Company search, disclosure list, document viewer
Financial	financial_	7	Financial statements (single/multi account, XBRL)
Report	report_	28	Periodic report key items (compensation, capital, directors, etc.)
Shareholding	shareholder_	2	Major shareholder and executive holdings
Major Events	event_	36	M&A, capital changes, stock events, lawsuits, and more
Registration	registration_	6	Securities registration statement details
Utility	utility_	1	Current date/time (KST)

Development

# Install dev dependencies
uv sync

# Run tests
uv run pytest

# Lint & format
uv run ruff check .
uv run ruff format .

# Type check
uv run pyright

License

MIT

Links

• OpenDART — Official OpenDART API portal
• DART — Electronic Disclosure System
• opendart-fss — Python SDK for OpenDART API