Korea Company Data

io.github.lichtsalzPublished by GitHub account lichtsalzv0.1.2Updated Oct 24, 2026

Korean company identity, registration status and monthly payroll-based employment, in English.

VerifiedStreamable HTTPWeb executableLocation & LifestyleBusiness & Commerce

Overview

AI-generated overview

MCP server for English-language Korean company records — identity, registration status, industry, address and monthly payroll-based employment — plus…

What you can do
  • Look up Korean companies by registration number or name and read identity, registration status, industry and English address fields.
  • Retrieve month-by-month employment series drawn from government payroll records, plus worksite addresses with headcount.
  • Query nationwide subway and commuter-rail stops, routes and departures from eleven operators in one GTFS-shaped dataset.
  • The same data is also offered through a command-line tool and a REST API using one API key.
When to use it
Useful when an assistant needs factual Korean company data in English — headcount trends, registration status, addresses — or rail stop and departure information, for research, due diligence or data enrichment. Not for scoring, ranking or judging companies.
Requirements
A remote endpoint or the local npm package korea-data-mcp (Node.js). An API key supplied in the KCID_API_KEY environment variable, issued from the provider's account page; new accounts reportedly start with free credits. Network access to the provider's service.
Before you install
The README states the REST API, MCP server and sign-up are currently paused, so lookups may return nothing until it reopens; keys and credits are said to be kept. The API is v0 and paths, parameters and field names may change without notice. The key is a secret and should not be shared.

Installation

In SourceWeft

  1. Open Korea Company Data in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.lichtsalz%2Fkorea-data/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "korea-company-data": {
      "type": "http",
      "url": "https://notonlystock.com/korea/mcp"
    }
  }
}

README

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 [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-dataCommand line — npx korea-data 124-81-00998 · npx korea-data rail 용산
korea-data-mcpMCP server for agents
openapi.yamlREST 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.

FieldPresent
Employees (Employment Insurance)100%
Address in English100%
Established date100%
Monthly employment series91.9%
Corporate registration number70.5%
Phone69.3%
Listed market · DART code25.5%
Worksite addresses with headcount100% (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.

Source: README.md at commit b01a056

Tools

0
SourceWeft has not read this server's tools yet.

Version history

1
  1. v0.1.2LatestSep 16, 2026

Score

50% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declaredRequired10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts