About Korea Company Data
Korea Company Data provides English-language records on Korean companies and nationwide rail data through a CLI, MCP server, and REST API description. Its service is currently paused; data can be requested from the provider, and the guide and API reference remain available.
Key features
- 01Company identity and registration status
- 02Industry, address, and establishment date
- 03Monthly employment records from payroll data
- 04Nationwide rail stops, routes, and departures
- 05CLI, MCP server, and REST API description
Use cases
- 01Look up a Korean company's registration details
- 02Review monthly employment history
- 03Find nationwide rail stops, routes, and departures
MCP support
The project includes an MCP server interface for agents, but the server is currently switched off and cannot fetch data. Data is available on request.
Configuration
Remote servers need no local install. Pick your client, then copy the config or install in one click.
https://notonlystock.com/korea/mcpclaude mcp add --transport http lichtsalz-korea-data https://notonlystock.com/korea/mcp{"mcpServers":{"lichtsalz-korea-data":{"type":"http","url":"https://notonlystock.com/korea/mcp"}}}Open in Cursor{"servers":{"lichtsalz-korea-data":{"type":"http","url":"https://notonlystock.com/korea/mcp"}}}Open in VS Code{"mcpServers":{"lichtsalz-korea-data":{"type":"http","url":"https://notonlystock.com/korea/mcp"}}}{"mcpServers":{"lichtsalz-korea-data":{"serverUrl":"https://notonlystock.com/korea/mcp"}}}Run commands in a terminal; paste JSON into the client’s MCP config and restart. Servers that need sign-in will prompt on first connect.
Tools
Details
From the project READMEKorea 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 [email protected] 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.
Full data guide → · API docs →
What this does not do
No score, no grade, no ranking, no opinion about any company. No sanctions, penalties or litigation history. No personal data. Facts and their sources only.
Stability
The API is v0. Paths, parameters and field names may change without notice until
v1. Pin nothing you cannot change.
MIT licensed.
Comments
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