Korea Business Verify (KBV)
REMOTE · KBV-SERVER-F7VFITMLKQ-DU.A.RUN.APP · SCANNED SEP 21
Real-time Korean business verification via NTS. 10 free calls/day, then pay-per-call (x402).
Available components
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. How we score → Why this is hard to score →
Endpoint Security74
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability84
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 361 tokens (~120/item across 3 items; 3 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management93
- Stability observed for 28 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
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.
remote · kbv-server-f7vfitmlkq-du.a.run.app
claude mcp add --transport http wonderfulian-kbv-server 'https://kbv-server-f7vfitmlkq-du.a.run.app/mcp'
{
"mcpServers": {
"wonderfulian-kbv-server": {
"url": "https://kbv-server-f7vfitmlkq-du.a.run.app/mcp"
}
}
} {
"servers": {
"wonderfulian-kbv-server": {
"type": "http",
"url": "https://kbv-server-f7vfitmlkq-du.a.run.app/mcp"
}
}
} [mcp_servers.wonderfulian-kbv-server] url = "https://kbv-server-f7vfitmlkq-du.a.run.app/mcp"
{
"$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 mcp add wonderfulian-kbv-server --url 'https://kbv-server-f7vfitmlkq-du.a.run.app/mcp' --transport streamable-http
mcp_servers:
wonderfulian-kbv-server:
url: "https://kbv-server-f7vfitmlkq-du.a.run.app/mcp" {
"McpServers": {
"wonderfulian-kbv-server": {
"Transport": "http",
"Url": "https://kbv-server-f7vfitmlkq-du.a.run.app/mcp"
}
}
} assistant mcp add wonderfulian-kbv-server -t streamable-http -u 'https://kbv-server-f7vfitmlkq-du.a.run.app/mcp'
{
"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.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 21 Sept 26 +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.
- 19 Sept 26 +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.
- 16 Sept 26 +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.
- 14 Sept 26 +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.
- 12 Sept 26 +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.
- 10 Sept 26 +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.
- 8 Sept 26 +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.
- 7 Sept 26 0
- Server version: 0.2.1 → 0.2.2 functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 21 Sept 2026 · Probed https://kbv-server-f7vfitmlkq-du.a.run.app/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=*.a.run.app | CN=WR2,O=Google Trust Services,C=US | 4 Sept 2026 | 27 Nov 2026 | ECDSA 256 | SHA256-RSA | a6993fec773504b312550b7de9609011 |
| SANs: *.a.run.app, run.app, *.africa-south1.run.app, *.asia-east1.run.app, *.asia-east2.run.app, *.asia-northeast1.run.app, *.asia-northeast2.run.app, *.asia-northeast3.run.app, *.asia-south1.run.app, *.asia-south2.run.app, *.asia-southeast1.run.app, *.asia-southeast2.run.app and 93 more | ||||||
| CN=WR2,O=Google Trust Services,C=US (CA) | CN=GTS Root R1,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | RSA 2048 | SHA256-RSA | 7ff005a07c4cded100ad9d66a5107b98 |
| CN=GTS Root R1,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 19 Jun 2020 | 28 Jan 2028 | RSA 4096 | SHA256-RSA | 77bd0d6cdb36f91aea210fc4f058d30d |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of kbv-server-f7vfitmlkq-du.a.run.app. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| app. | present | 23684 | 8 | Verified |
| run.app. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://kbv-server-f7vfitmlkq-du.a.run.app/mcp | Verified | 200 | |
| http (plaintext) | http://kbv-server-f7vfitmlkq-du.a.run.app/mcp | HTTPS enforced | 302 | https://kbv-server-f7vfitmlkq-du.a.run.app/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
check_korean_business_batch Batch check Korean business status ~123
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.
| Name | Type | Req | Description |
|---|---|---|---|
| business_numbers | array | yes | 1-100 Korean business registration numbers; hyphens/spaces allowed |
| Name | Type | Req | Description |
|---|---|---|---|
| results | array | yes | – |
| summary | object | yes | – |
No examples provided.
check_korean_business_status Check Korean business status ~93
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.
| Name | Type | Req | Description |
|---|---|---|---|
| business_number | string | yes | 10-digit Korean business registration number; hyphens/spaces allowed, e.g. "123-45-67890" |
| Name | Type | Req | Description |
|---|---|---|---|
| business_number | string | yes | – |
| cache | boolean | yes | – |
| checked_at | string | yes | – |
| closed_date | – | yes | – |
| source | string | yes | – |
| status | string | yes | – |
| status_code_raw | string | yes | – |
| tax_type | string | yes | – |
No examples provided.
verify_korean_business Verify Korean business identity ~145
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.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | Optional business address to include in the match (maps to NTS b_adr) |
| business_number | string | yes | 10-digit Korean business registration number; hyphens/spaces allowed |
| opening_date | string | yes | Business opening date in YYYY-MM-DD format, e.g. "2015-03-02" |
| representative_name | string | yes | Representative (CEO) name as registered, e.g. "홍길동" |
| Name | Type | Req | Description |
|---|---|---|---|
| business_number | string | yes | – |
| cache | boolean | yes | – |
| checked_at | string | yes | – |
| closed_date | – | yes | – |
| identity_match | boolean | yes | – |
| source | string | yes | – |
| status | string | yes | – |
| status_code_raw | string | yes | – |
| tax_type | string | yes | – |
No examples provided.
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.