The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the Korea Company Data listing page.
Korean company records in English: identity, registration status, industry, address, and month-by-month employment from government payroll records.
Three ways in, one API key.
korea-data | Command line — npx korea-data 124-81-00998 |
korea-data-mcp | MCP server for agents |
openapi.yaml | REST API description |
Get a key at https://notonlystock.com/korea/account — 5,000 free credits, no card.
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 →
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.
The API is v0. Paths, parameters and field names may change without notice until
v1. Pin nothing you cannot change.
MIT licensed.