MCP Server: io.github.lichtsalz/korea-data

This MCP server provides access to Korean company records in English, covering company identity, registration status, industry, address, and month-by-month employment derived from government payroll records. The repository documents a developer kit with related CLI and a REST API specification.

🛠️ Key Features

Korean company identity information (in English)
Registration status, industry, and address
Monthly employment data based on government payroll records
Exposure via an MCP server component (korea-data-mcp)

🚀 Use Cases

Agent workflows that need Korean corporate identity and status
Programs that require month-by-month employment trends from payroll records
Integration of company registration and address details into downstream systems

⚡ Developer Benefits

MCP server entry point for agents (korea-data-mcp)
Consistent dataset availability alongside a REST API (openapi.yaml) and CLI
REST API description included via openapi.yaml

⚠️ Limitations

Requires API key access (key at https://notonlystock.com/korea/account)
Data description provided focuses on for-profit corporate headquarters

Korea Company Data — developer kit

Paused — data available on request. The REST API, the MCP server and sign-up are switched off for now, so the CLI and MCP server here cannot fetch anything at the moment. The data is not gone: it can be provided on request. Email support@notonlystock.com with what you need — which companies or rail data, which fields, and in what form — or leave a note on the feedback page. The data guide and API reference stay up, and existing keys and credits are kept for when the API reopens.

Korean company records in English: identity, registration status, industry, address, and month-by-month employment from government payroll records.

Plus nationwide rail — every subway and commuter-rail stop, route and departure, eleven operators reconciled into one GTFS-shaped dataset.

Three ways in, one API key.

korea-data

Command line — npx korea-data 124-81-00998 · npx korea-data rail 용산

korea-data-mcp

MCP server for agents

openapi.yaml

REST API description

Keys are issued at https://dataservice.notonlystock.com/korea/account once the API reopens — 5,000 free credits, no card.

What is in the data

152,367 Korean for-profit corporate headquarters with 10 or more insured employees.

Field

Present

Employees (Employment Insurance)

100%

Address in English

100%

Established date

100%

Monthly employment series

91.9%

Corporate registration number

70.5%

Phone

69.3%

Listed market · DART code

25.5%

Worksite addresses with headcount

100% (25.5% have more than one)

Registration numbers are validated against the National Tax Service. Where a value could be read as more than it is, a companion field says what kind of value it is — name_en_class, established_date_source, nps_quality. Which source each field comes from is in the data guide.

Install

Configuration

Environment variables

KCID_API_KEYrequiredsecret

API key from https://notonlystock.com/korea/account — new accounts start with 50 free credits.

Add to VS Code Add to Cursor

claude_desktop_config.json

json

{
  "mcpServers": {
    "korea-data": {
      "command": "npx",
      "args": [
        "-y",
        "korea-data-mcp@0.1.2"
      ],
      "env": {
        "KCID_API_KEY": "<YOUR_KCID_API_KEY>"
      }
    }
  }
}

Korea Company Data

MCP Server: io.github.lichtsalz/korea-data

🛠️ Key Features

🚀 Use Cases

⚡ Developer Benefits

⚠️ Limitations

Korea Company Data — developer kit

What is in the data

What this does not do

Stability

Install

Configuration

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