LS Securities OpenAPI — Korean Stocks for AI Assistants

by redoxnet

337 downloads

Not rated

GitHub

Finance

About

MCP server for LS Securities OpenAPI — Korean stock quotes, multi-timeframe charts, technical indicators, market screeners, ETF holdings, and local portfolio notes as natural-language tools for Claude Desktop, Claude Code, VS Code, and Codex. Built on .NET, distributed via NuGet

Details

Author: redoxnet
Downloads: 337
Categories: Finance

- Current quote and 10-level order book for Korean stocks.
- Multi-quote comparison for up to 50 stocks.
- Daily, weekly, monthly, minute, and tick OHLCV charts.
- Technical indicators: SMA, EMA, RSI, MACD, Bollinger Bands.
- KOSPI, KOSDAQ, KOSPI200, KRX100 snapshots and history.
- Top gainers, losers, market-cap, volume, and trading-value screeners.
- ETF/ETN snapshots with holdings treemaps and NAV data.
- Local portfolio tracking stored in SQLite on your machine.

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below

Plugin Name LS Securities OpenAPI — Korean Stocks for AI Assistants

Command (node, npx, python, etc.)

Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

From the repository

Obtain an LS OpenAPI AppKey and AppSecretKey from openapi.ls-sec.co.kr, then configure your MCP client with the JSON snippet using the dnx command (requires .NET SDK 10 or later). Set three environment variables: LS_APPKEY, LS_APPSECRETKEY, and LS_MARKET (set to "real"). After setup, prompt your AI assistant in natural language—for example, "Show me Samsung Electronics' current quote and 10-level order book."

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "ls securities openapi \u2014 korean stocks for ai assistants": {
            "lsopenapi": {
                "command": "dnx",
                "args": [
                    "RedoxNet.Mcp.LsOpenApi",
                    "--yes"
                ],
                "env": {
                    "LS_APPKEY": "<YOUR_LS_APPKEY>",
                    "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
                    "LS_MARKET": "real"
                }
            }
        }
    }
}

McpServers

{
    "lsopenapi": {
        "command": "dnx",
        "args": [
            "RedoxNet.Mcp.LsOpenApi",
            "--yes"
        ],
        "env": {
            "LS_APPKEY": "<YOUR_LS_APPKEY>",
            "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",
            "LS_MARKET": "real"
        }
    }
}

LS Securities OpenAPI for AI assistants.

Query Korean stock quotes, order books, charts, indicators, ETF holdings, market screeners, index context, analyst opinions, short-selling trends, and local portfolio notes from Claude Desktop, Claude Code, VS Code, Codex, or any MCP-compatible client.

> ⚠️ Unofficial third-party server. Not affiliated with or endorsed by LS Securities Co., Ltd.
> This server is for information retrieval and local portfolio notes. It does not place trades or sync brokerage accounts.

Get Started

1. Get LS OpenAPI keys

Log in to openapi.ls-sec.co.kr with your LS Securities account, apply for OpenAPI access, then create an AppKey / AppSecretKey from MY > API Key 관리.

2. Configure your MCP client

Example for Claude Desktop:

``

json

{

  "mcpServers": {

    "lsopenapi": {

      "command": "dnx",

      "args": ["RedoxNet.Mcp.LsOpenApi", "--yes"],

      "env": {

        "LS_APPKEY": "<YOUR_LS_APPKEY>",

        "LS_APPSECRETKEY": "<YOUR_LS_APPSECRETKEY>",

        "LS_MARKET": "real"

      }

    }

  }

}

dnx

 requires .NET SDK 10 or later.



3. Try a prompt






> "Show me Samsung Electronics' current quote and 10-level order book."  



> "Pull SK Hynix daily, weekly, and monthly charts with MA20 and RSI."  



> "Find today's top trading-value stocks and analyze the strongest one."  



> "Show my holdings in the semiconductor industry."  



> "What are recent analyst opinion changes for Samsung Electronics?"



What You Can Ask






Quotes and Stock Lookup






- Current price and 10-level order book for a single Korean stock

- Multi-quote comparison for up to 50 stocks

- Company name to ticker lookup across KOSPI / KOSDAQ

- Company profile, PER / PBR / EPS, quarterly financials, foreign ownership, top brokers, 52-week and YTD ranges



Charts and Technical Analysis






- Daily / weekly / monthly / yearly / minute / tick OHLCV candles

- Multi-timeframe charts in one call

- SMA, EMA, RSI, MACD, Bollinger Bands, ZigZag swing context

- Token-efficient summaries and dataset handles for follow-up chart work

- Optional Plotly chart specs for MCP clients that support inline rendering



Market Context and Screeners






- KOSPI / KOSDAQ / KOSPI200 / KRX100 snapshots and history

- Industry index rankings and stocks inside an industry

- LS theme stocks and stock-to-theme lookup

- Top gainers / losers / market-cap / volume / trading-value / volume-surge screens

- Fundamentals ranking by PER, PBR, ROE, EPS, BPS, growth metrics, debt ratio, and retained earnings ratio

- Investor flow, market warnings, corporate events, new highs / lows

- Overseas index / FX / futures snapshots, including aliases such as NASDAQ, S&P 500, Dow, SOXX, USD/KRW, WTI, and gold



ETF / ETN






- ETF snapshot: NAV, tracking index, premium / discount, AUM, LPs

- ETF constituent holdings with weights, market value, cash, and bond components

- Optional Plotly treemap for supported clients



Local Portfolio Notes






- Track accounts, holdings, watchlists, and watched LS themes locally

- Buy / sell / set holdings manually with weighted average cost

- Apply local corporate actions such as split, reverse split, and bonus issue

- Filter holdings by theme or FICS industry

- Export / import a local JSON portfolio backup



Portfolio data is stored only on your machine in SQLite. It is not synced with LS Securities and does not represent live brokerage account state.



Credential Safety

LS_APPKEY and LS_APPSECRETKEY

 are accepted only through environment variables. They are never requested through chat, tool arguments, or MCP elicitation.



Access tokens are cached locally, but the token cache key stores only

SHA256(appkey):market

; raw AppKey and AppSecretKey are not written to disk. Logs and errors mask secrets.



Tool Surface






The server exposes curated semantic tools such as:



-

ls_search_stock

ls_get_quote

ls_get_multi_quote

ls_get_stock_info

ls_get_chart

ls_get_top_stocks

ls_get_index_quote

ls_get_index_history

ls_get_industry_indices

ls_get_theme_stocks

ls_get_fundamentals_rank

ls_get_investor_flow

ls_get_etf_info

ls_get_etf_holdings

ls_holdings_list





It also includes TR catalog tools for advanced users:

ls_search_tr, ls_describe_tr, and ls_call_tr`.

For full setup instructions, host-specific config snippets, complete tool schemas, response examples, and release notes, see the GitHub repository.

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About

Details

Jump to

Setting up with Highlight

From the repository

Claude Desktop / Cursor

McpServers

Get Started

1. Get LS OpenAPI keys

2. Configure your MCP client

3. Try a prompt

What You Can Ask

Quotes and Stock Lookup

Charts and Technical Analysis

Market Context and Screeners

ETF / ETN

Local Portfolio Notes

Credential Safety

Tool Surface

Install

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