# Korea Business Verify (KBV) (remote · kbv-server-f7vfitmlkq-du.a.run.app)

Real-time Korean business verification via NTS. 10 free calls/day, then pay-per-call (x402).

- Trust score: 86/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-21

## Components

- remote · `kbv-server-f7vfitmlkq-du.a.run.app`: 86/100 (this document), [markdown](https://verifymcp.io/servers/wonderfulian-kbv-server/kbv-server-f7vfitmlkq-du.md), [page](https://verifymcp.io/servers/wonderfulian-kbv-server/kbv-server-f7vfitmlkq-du)

## Channel facts

- Endpoint: `https://kbv-server-f7vfitmlkq-du.a.run.app/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.2.2`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-21.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 84/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 361 tokens (~120/item across 3 items; 3 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 93/100
  - Stability observed for 28 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Korea Business Verify (KBV) MCP server?

Korea Business Verify (KBV) is a hosted endpoint at https://kbv-server-f7vfitmlkq-du.a.run.app/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http wonderfulian-kbv-server 'https://kbv-server-f7vfitmlkq-du.a.run.app/mcp'
```

### Cursor

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

### VS Code

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

### Codex

```toml
[mcp_servers.wonderfulian-kbv-server]
url = "https://kbv-server-f7vfitmlkq-du.a.run.app/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "wonderfulian-kbv-server": {
      "type": "remote",
      "url": "https://kbv-server-f7vfitmlkq-du.a.run.app/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add wonderfulian-kbv-server --url 'https://kbv-server-f7vfitmlkq-du.a.run.app/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  wonderfulian-kbv-server:
    url: "https://kbv-server-f7vfitmlkq-du.a.run.app/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "wonderfulian-kbv-server": {
      "Transport": "http",
      "Url": "https://kbv-server-f7vfitmlkq-du.a.run.app/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add wonderfulian-kbv-server -t streamable-http -u 'https://kbv-server-f7vfitmlkq-du.a.run.app/mcp'
```

### Other

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

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-21 (score 86, +1)

No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-19 (score 85, +1)

No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-16 (score 84, +1)

No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-14 (score 83, +1)

No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-12 (score 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-10 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-08 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-07 (score 79, 0)

- [functional] Server version: 0.2.1 → 0.2.2

## MCP tools (3)

### `check_korean_business_status` (~93 tokens)

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.

Input parameters:

- `business_number` (string, required): 10-digit Korean business registration number; hyphens/spaces allowed, e.g. "123-45-67890"

Output parameters:

- `business_number` (string)
- `cache` (boolean)
- `checked_at` (string)
- `closed_date`
- `source` (string)
- `status` (string)
- `status_code_raw` (string)
- `tax_type` (string)

### `check_korean_business_batch` (~123 tokens)

Batch check Korean business status

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.

Input parameters:

- `business_numbers` (array, required): 1-100 Korean business registration numbers; hyphens/spaces allowed

Output parameters:

- `results` (array)
- `summary` (object)

### `verify_korean_business` (~145 tokens)

Verify Korean business identity

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.

Input parameters:

- `address` (string): Optional business address to include in the match (maps to NTS b_adr)
- `business_number` (string, required): 10-digit Korean business registration number; hyphens/spaces allowed
- `opening_date` (string, required): Business opening date in YYYY-MM-DD format, e.g. "2015-03-02"
- `representative_name` (string, required): Representative (CEO) name as registered, e.g. "홍길동"

Output parameters:

- `business_number` (string)
- `cache` (boolean)
- `checked_at` (string)
- `closed_date`
- `identity_match` (boolean)
- `source` (string)
- `status` (string)
- `status_code_raw` (string)
- `tax_type` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/wonderfulian-kbv-server/kbv-server-f7vfitmlkq-du#diagnostics

## Score history

- 2026-09-21: 86
- 2026-09-20: 85
- 2026-09-19: 85
- 2026-09-18: 84
- 2026-09-17: 84
- 2026-09-16: 84
- 2026-09-15: 83
- 2026-09-14: 83
- 2026-09-13: 82
- 2026-09-12: 82
- 2026-09-11: 81
- 2026-09-10: 81
- 2026-09-09: 80
- 2026-09-08: 80
- 2026-09-07: 79
- 2026-09-06: 79
- 2026-09-05: 78
- 2026-09-04: 78
- 2026-09-03: 71
- 2026-09-02: 70
- 2026-09-01: 70
- 2026-08-31: 69
- 2026-08-30: 69
- 2026-08-29: 68
- 2026-08-28: 68
- 2026-08-27: 67
- 2026-08-26: 67
- 2026-08-25: 65
- 2026-08-24: 65

## Common questions

### What is the Korea Business Verify (KBV) MCP server?

Korea Business Verify (KBV) is an MCP server listed in the public MCP registry as io.github.Wonderfulian/kbv-server. Real-time Korean business verification via NTS. 10 free calls/day, then pay-per-call (x402). This page covers its hosted endpoint (https://kbv-server-f7vfitmlkq-du.a.run.app/mcp).

### Is the Korea Business Verify (KBV) MCP server safe to use?

Korea Business Verify (KBV) scores 86 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Korea Business Verify (KBV) MCP server expose?

Korea Business Verify (KBV) exposes 3 tools: check_korean_business_status, check_korean_business_batch, verify_korean_business. Their descriptions and schemas cost roughly 361 tokens of context every time the server is loaded.

### Does the Korea Business Verify (KBV) MCP server require authentication?

No. We connected to Korea Business Verify (KBV) without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Korea Business Verify (KBV) MCP server still maintained?

Korea Business Verify (KBV) is still listed as active in the MCP registry. We last reached this channel on 21 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://kbv-server-f7vfitmlkq-du.a.run.app/mcp
- Repository: https://github.com/Wonderfulian/kbv-server
- Changelog RSS feed: https://verifymcp.io/servers/wonderfulian-kbv-server/kbv-server-f7vfitmlkq-du.xml
- Changelog JSON feed: https://verifymcp.io/servers/wonderfulian-kbv-server/kbv-server-f7vfitmlkq-du.json
- HTML version of this page: https://verifymcp.io/servers/wonderfulian-kbv-server/kbv-server-f7vfitmlkq-du