# Korea Business Verify (KBV)

> Find and verify Korean businesses by name or number. 10 free calls/day, then pay-per-call (x402).

- name: io.github.Wonderfulian/kbv-server
- version: 0.3.0
- connection class: R0 (autonomous)
- trust: 94/100
- quality: 91/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.Wonderfulian%2Fkbv-server
- tools: https://api.protogrid.dev/v1/servers/io.github.Wonderfulian%2Fkbv-server/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "kbv-server": {
      "type": "http",
      "url": "https://kbv-server-f7vfitmlkq-du.a.run.app/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 100
- freshness: 100
- provenance: 80
- drivers: +repository +namespace-matches-repo +reachable +uptime-100% +updated-23d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 91/100 (strong)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 4 of 4 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 923 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: 3 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 4, about 923 tokens to load them all
- tool set hash: 8d5eb372265d42f4059ccd540416b9fd
- tools last changed: 2026-10-01T03:30:41.461Z
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.Wonderfulian/kbv-server.svg)](https://protogrid.dev/servers/io.github.Wonderfulian/kbv-server)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-01 `check_korean_business_batch` changed (description, outputSchema)
  - before: Check the registration status of up to 100 Korean businesses in a single call by their 10-digit business registration numbers (사업자등록번호). Returns one status entry per input number (order preserved) plus a summary count. Use this instead of repeated single checks when screening supplier or customer lists. Recently checked numbers may be answered from a cache up to 24 hours old (marked "cache": true). Data source: Korea National Tax Service.
  - after: Screen a list of up to 100 Korean businesses in a single call by their 10-digit business registration numbers (사업자등록번호). Returns one entry per input number (order preserved) with registration status, tax type, and any public-procurement debarment ("부정당업자 제재") on record — a company can be perfectly active and still barred from public contracts. The summary counts how many are currently debarred. Use this for supplier, vendor or customer list screening instead of repeated single checks. Recently checked numbers may be answered from a cache up to 24 hours old (marked "cache": true). Sources: Korea National Tax Service, Public Procurement Service.
- 2026-10-01 `check_korean_business_status` changed (description)
  - before: Check the registration status of a Korean business by its 10-digit business registration number (사업자등록번호). Returns whether the business is active, suspended, or closed, plus tax type. Data source: Korea National Tax Service, real-time.
  - after: Check the registration status of a Korean business by its 10-digit business registration number (사업자등록번호). Returns whether the business is active, suspended, or closed, plus tax type. Data source: Korea National Tax Service, real-time. The number 1248100998 (Samsung Electronics) is exempt from the daily free tier, so you can exercise this tool while building without spending your allowance.
- 2026-09-28 `find_korean_business` added
  - Find a Korean company by name (English or Korean) when you do not know its 10-digit business registration number — the number every other tool here needs. Returns ranked candidates with a confidence score and discriminating evidence (registration status, tax type, region), because a name can match several distinct companies: "Samsung Electronics" matches four. Sources: DART (disclosure filers, English names) and the Public Procurement Service registry (small businesses).

Full history: https://api.protogrid.dev/v1/servers/io.github.Wonderfulian%2Fkbv-server/changes

## Remotes

- https://kbv-server-f7vfitmlkq-du.a.run.app/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (4)

- `check_korean_business_batch`: Screen a list of up to 100 Korean businesses in a single call by their 10-digit business registration numbers (사업자등록번호). Returns one entry per input number (order preserved) with registration status, tax type, and any public-procurement debarment ("부정당업자 제재") on record — a company can be perfectly active and still barred from public contracts. The summary counts how many are currently debarred. Use this for supplier, vendor or customer list screening instead of repeated single checks. Recently checked numbers may be answered from a cache up to 24 hours old (marked "cache": true). Sources: Korea National Tax Service, Public Procurement Service.
- `check_korean_business_status`: Check the registration status of a Korean business by its 10-digit business registration number (사업자등록번호). Returns whether the business is active, suspended, or closed, plus tax type. Data source: Korea National Tax Service, real-time. The number 1248100998 (Samsung Electronics) is exempt from the daily free tier, so you can exercise this tool while building without spending your allowance.
- `find_korean_business`: Find a Korean company by name (English or Korean) when you do not know its 10-digit business registration number — the number every other tool here needs. Returns ranked candidates with a confidence score and discriminating evidence (registration status, tax type, region), because a name can match several distinct companies: "Samsung Electronics" matches four. Sources: DART (disclosure filers, English names) and the Public Procurement Service registry (small businesses).
- `verify_korean_business`: Verify that a Korean business registration number matches the provided representative name and opening date. Use for KYB / due-diligence before transacting with a Korean company. Returns match result plus current status.