XBOSS
REMOTE · API.XDATA.KR · SCANNED SEP 27
Korean national tax and social insurance filings, invoices and payroll data as MCP tools.
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 Security81
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token. View diagnostics → Pass
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- 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
- The authorisation server supports Client ID Metadata Documents, the current MCP client-registration mechanism. View diagnostics → Pass
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability63
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 25123 tokens (~239/item across 105 items; 105 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management16
- Stability check failed: schema churn in the 5 days we've observed: 1 tool removals, 0 breaking changes, 0 auth/transport breaks, 7 additions. See how to fix → Fail
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 99% of tool parameters carry a description.Partial
Tool Safety85
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 2 of 5 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "hometax__tax__payment_due__search_or_pay" implies "pay" and declares readOnlyHint instead, contradicting what its own name says it does. See how to fix → Partial
- An AI judge read all 106 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 XBOSS MCP server?
XBOSS is a hosted endpoint at https://api.xdata.kr/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 · api.xdata.kr
claude mcp add --transport http kr-xdata-xdata-mcp 'https://api.xdata.kr/mcp'
{
"mcpServers": {
"kr-xdata-xdata-mcp": {
"url": "https://api.xdata.kr/mcp"
}
}
} {
"servers": {
"kr-xdata-xdata-mcp": {
"type": "http",
"url": "https://api.xdata.kr/mcp"
}
}
} [mcp_servers.kr-xdata-xdata-mcp] url = "https://api.xdata.kr/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"kr-xdata-xdata-mcp": {
"type": "remote",
"url": "https://api.xdata.kr/mcp",
"enabled": true
}
}
} openclaw mcp add kr-xdata-xdata-mcp --url 'https://api.xdata.kr/mcp' --transport streamable-http
mcp_servers:
kr-xdata-xdata-mcp:
url: "https://api.xdata.kr/mcp" {
"McpServers": {
"kr-xdata-xdata-mcp": {
"Transport": "http",
"Url": "https://api.xdata.kr/mcp"
}
}
} assistant mcp add kr-xdata-xdata-mcp -t streamable-http -u 'https://api.xdata.kr/mcp'
{
"mcpServers": {
"kr-xdata-xdata-mcp": {
"type": "http",
"url": "https://api.xdata.kr/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.
- 27 Sept 26 +1
- The server rewrote its instructions, which are the text every model session reads security
- New tool “company_info_pack__brief_v1__generate” functional
- “ibk_fast_account__accounts__quick_summary__get” reworded the description of “bank_account_credential_id” cosmetic
- “kb_fast_account__accounts__transaction_history__search” reworded the description of “bank_account_credential_id” cosmetic
- “shinhan_easy__accounts__transaction_history__search” reworded the description of “sort_order” cosmetic
- “ibk_fast_account__accounts__quick_summary__get” dropped the optional parameter “bank_account_credential_ids” cosmetic
- “ibk_fast_account__accounts__quick_summary__get” dropped the optional parameter “bank_account_selection_mode” cosmetic
- “kb_fast_account__accounts__transaction_history__search” dropped the optional parameter “bank_account_credential_ids” cosmetic
- “kb_fast_account__accounts__transaction_history__search” dropped the optional parameter “bank_account_selection_mode” cosmetic
- 26 Sept 26 0
- New tool “google__account__status” functional
- New tool “google__analytics__measurement__audit” functional
- New tool “google__analytics__report” functional
- New tool “google__search_console__index_status” functional
- New tool “google__search_console__performance” functional
- New tool “google_marketing_pack__report_v1__generate” functional
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 24 Sept 26 +1
- Stability: 0.03 → fail ▼ security
- A breaking change shipped without a version bump: still 1.0.0 ▼ security
- Tool “payroll_pack__smoke__generate” was removed ▼ security
- The server rewrote its instructions, which are the text every model session reads security
- Tool “opendata__env__waste_sanction” rewrote its description, which is the text the model reads security
- Tool “opendata__g2b__sanction” rewrote its description, which is the text the model reads security
- Tool “opendata__kiscon__sanction” rewrote its description, which is the text the model reads security
- Tool “opendata__nts__status” rewrote its description, which is the text the model reads security
- Tool “opendata__nts__validate” rewrote its description, which is the text the model reads security
- Tool “payroll_pack__employment_insurance_summary_v1__generate” rewrote its description, which is the text the model reads security
- Tool “payroll_pack__insurance_deduction_material_v1__generate” rewrote its description, which is the text the model reads security
- Tool “payroll_pack__premium_summary_v1__generate” rewrote its description, which is the text the model reads security
- Tool “hometax__certificate__download” is now declared destructive security
- “hometax__certificate__download” added an optional parameter “confirm” cosmetic
- 23 Sept 26 0
- Stability: unverified → 0.03 ▲ functional
- 22 Sept 26 71
First indexed and scored.
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 27 Sept 2026 · Probed https://api.xdata.kr/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=xdata.kr | CN=WR3,O=Google Trust Services,C=US | 13 Sept 2026 | 12 Dec 2026 | RSA 2048 | SHA256-RSA | 47a512475a8be1b70ae4d2fc4956b135 |
| SANs: xdata.kr, www.xdata.kr, console.xdata.kr, admin.xdata.kr, api.xdata.kr | ||||||
| CN=WR3,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 | 7ff005a91568d63abc22861684aa4b5a |
| 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 api.xdata.kr. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| kr. | present | 64641 | 13 | Verified |
| xdata.kr. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Enforced and verified
The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.
| Result | Enforced and verified |
|---|---|
| Enforced | On tool calls |
| HTTP status | 200 |
WWW-Authenticate challenge Bearer resource_metadata="https://api.xdata.kr/.well-known/oauth-protected-resource/mcp", error_description="XBOSS login required", scope="mcp:tools:list mcp:tools:call"
Bearer resource_metadata="https://api.xdata.kr/.well-known/oauth-protected-resource/mcp", error_description="XBOSS login required", scope="mcp:tools:list mcp:tools:call"Protected resource metadata
| Document | https://api.xdata.kr/.well-known/oauth-protected-resource/mcp |
|---|---|
| Retrieved | Yes |
| Resource | https://api.xdata.kr/mcp |
| Authorisation server | https://api.xdata.kr |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://api.xdata.kr/mcp | Verified | 200 | |
| http (plaintext) | http://api.xdata.kr/mcp | Inconclusive | 405 |
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 →
work24__subsidy__application__target_init 고용24 기업지원금 대상자정보 단계 진입 ~235
REQUIRES prior work24__auth__npki_session__login call with same account_link_id. Enter the 대상자정보 step of an existing work24 subsidy draft and return its form contract. Requires a 접수번호 from workplace_save. Read-only.
| Name | Type | Req | Description |
|---|---|---|---|
| account_link_id | string | – | Account link ID (UUID v4). Optional — the server auto-resolves from your API key when omitted. Provide explicitly only when you have multiple certificates for the same provider. Each institution has… |
| business_management_no | string | – | 11-digit 고용보험 사업장관리번호. 비우면 로그인 시 저장된 값을 쓴다. |
| programme_key | string | yes | 카탈로그 사업 키 (예: w24_b0010 고용촉진장려금). subsidy_pack 진단 결과의 programme_key 를 그대로 넣는다. |
| receipt_no | string | yes | 민원신청접수번호 (cvplRqutRcno). workplace_save 가 발급한 값. |
No output schema declared.
No examples provided.
work24__subsidy__application__target_save 고용24 기업지원금 대상자 저장 ~341
REQUIRES prior work24__auth__npki_session__login call with same account_link_id. Name the chosen 피보험자 as subsidy targets on a draft, identified by the irno values returned by target_search. Write — reversible while the draft is 작성중.
| Name | Type | Req | Description |
|---|---|---|---|
| account_link_id | string | – | Account link ID (UUID v4). Optional — the server auto-resolves from your API key when omitted. Provide explicitly only when you have multiple certificates for the same provider. Each institution has… |
| business_management_no | string | – | 11-digit 고용보험 사업장관리번호. 비우면 로그인 시 저장된 값을 쓴다. |
| labor_contract | string | yes | 근로계약유형. 고용24 화면 필수 선택 항목. |
| programme_key | string | yes | 카탈로그 사업 키 (예: w24_b0010 고용촉진장려금). subsidy_pack 진단 결과의 programme_key 를 그대로 넣는다. |
| receipt_no | string | yes | 민원신청접수번호 (cvplRqutRcno). workplace_save 가 발급한 값. |
| target_irnos | array | yes | target_search 결과의 irno 배열. 주민번호는 필요하지 않다 — 기관이 이미 아는 값을 다시 받지 않는다. |
| worker_type | string | yes | 근로자유형. 고용24 화면 필수 선택 항목이며 기관이 채워 주지 않는다. 라벨은 target_search 응답의 selection_options 에 있다. |
No output schema declared.
No examples provided.
work24__subsidy__application__target_search 고용24 기업지원금 대상자 후보 조회 ~299
REQUIRES prior work24__auth__npki_session__login call with same account_link_id. List the 사업장 고용보험 피보험자 who can be named as subsidy targets. Targets are chosen from this list, never created, so no resident registration number is required from the caller. Read-only.
| Name | Type | Req | Description |
|---|---|---|---|
| account_link_id | string | – | Account link ID (UUID v4). Optional — the server auto-resolves from your API key when omitted. Provide explicitly only when you have multiple certificates for the same provider. Each institution has… |
| business_management_no | string | – | 11-digit 고용보험 사업장관리번호. 비우면 로그인 시 저장된 값을 쓴다. |
| page | integer | – | 1-based 페이지 (기본 1) |
| page_size | integer | – | 페이지 크기 (기본 10) |
| programme_key | string | yes | 카탈로그 사업 키 (예: w24_b0010 고용촉진장려금). subsidy_pack 진단 결과의 programme_key 를 그대로 넣는다. |
| query | string | – | 대상자 성명 부분검색. 비우면 피보험자 전체. |
| receipt_no | string | yes | 민원신청접수번호 (cvplRqutRcno). workplace_save 가 발급한 값. |
No output schema declared.
No examples provided.
work24__subsidy__application__withdraw 고용24 기업지원금 신청 철회 ~254
REQUIRES prior work24__auth__npki_session__login call with same account_link_id. Withdraw a submitted work24 subsidy application (반려요청). Requires explicit caller acknowledgement. This is the undo for submit.
| Name | Type | Req | Description |
|---|---|---|---|
| account_link_id | string | – | Account link ID (UUID v4). Optional — the server auto-resolves from your API key when omitted. Provide explicitly only when you have multiple certificates for the same provider. Each institution has… |
| business_management_no | string | – | 11-digit 고용보험 사업장관리번호. 비우면 로그인 시 저장된 값을 쓴다. |
| confirm | boolean | yes | 되돌릴 수 없는 처리에 대한 명시 확인. true 가 아니면 거부된다. |
| programme_key | string | yes | 카탈로그 사업 키 (예: w24_b0010 고용촉진장려금). subsidy_pack 진단 결과의 programme_key 를 그대로 넣는다. |
| receipt_no | string | yes | 민원신청접수번호 (cvplRqutRcno). workplace_save 가 발급한 값. |
No output schema declared.
No examples provided.
work24__subsidy__application__workplace_save 고용24 기업지원금 사업장정보 저장 ~463
REQUIRES prior work24__auth__npki_session__login call with same account_link_id. Save 사업장정보 into a work24 subsidy draft and obtain the 접수번호 (cvplRqutRcno). Write — business-key idempotent: a retry returns the existing 접수번호 instead of creating a second draft.
| Name | Type | Req | Description |
|---|---|---|---|
| account_link_id | string | – | Account link ID (UUID v4). Optional — the server auto-resolves from your API key when omitted. Provide explicitly only when you have multiple certificates for the same provider. Each institution has… |
| applicant_base_address | string | – | 사업장 기본주소 |
| applicant_detail_address | string | – | 사업장 상세주소 |
| applicant_zip | string | – | 사업장 우편번호 (5자리) |
| application_quarter | integer | – | 신청 시작 분기/월 구분값 |
| application_year | integer | – | 신청 시작 연도 |
| business_management_no | string | – | 11-digit 고용보험 사업장관리번호. 비우면 로그인 시 저장된 값을 쓴다. |
| manager_email | string | – | 담당자 이메일 (예: manager@example.com) |
| manager_mobile1 | string | – | 담당자 휴대전화 앞자리 (예: 010) |
| manager_mobile2 | string | – | 담당자 휴대전화 나머지 |
| manager_name | string | – | 담당자명 |
| manager_phone1 | string | – | 담당자 유선전화 국번 앞자리 (예: 02) |
| manager_phone2 | string | – | 담당자 유선전화 나머지 (예: 6380-5554) |
| payment_account_holder | string | – | 예금주명 (사업장명과 일치해야 한다) |
| payment_account_no | string | – | 지원금 입금 계좌번호 |
| payment_bank_name | string | – | 지원금 입금 은행명 |
| programme_key | string | yes | 카탈로그 사업 키 (예: w24_b0010 고용촉진장려금). subsidy_pack 진단 결과의 programme_key 를 그대로 넣는다. |
No output schema declared.
No examples provided.
What is the XBOSS MCP server?
XBOSS is an MCP server listed in the public MCP registry as kr.xdata/xdata-mcp. Korean national tax and social insurance filings, invoices and payroll data as MCP tools. This page covers its hosted endpoint (https://api.xdata.kr/mcp).
Is the XBOSS MCP server safe to use?
XBOSS scores 73 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 XBOSS MCP server expose?
XBOSS exposes 105 tools: hometax__session__login, hometax__session__user_info, hometax__certificate__list, hometax__certificate__apply__national_tax_payment, hometax__certificate__apply__tax_payment_record, and 100 more. Their descriptions and schemas cost roughly 23,830 tokens of context every time the server is loaded.
Does the XBOSS MCP server require authentication?
Yes. XBOSS asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.
Is the XBOSS MCP server still maintained?
XBOSS is still listed as active in the MCP registry. We last reached this channel on 27 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.