XBOSS is answering right now. Last checked 12 min ago. It exposes 247 tools.
Korean national tax and social insurance filings, invoices and payroll data as MCP tools.
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 23 September 2026. No other catalogue keeps this.
Over the last week it answered 99.2% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 12 min ago.
claude mcp add xdata-mcp --transport http https://api.xdata.kr/mcp
{
"mcpServers": {
"xdata-mcp": {
"url": "https://api.xdata.kr/mcp"
}
}
}
[mcp_servers.xdata-mcp]
url = "https://api.xdata.kr/mcp"
{
"mcpServers": {
"xdata-mcp": {
"url": "https://api.xdata.kr/mcp"
}
}
}
{
"mcpServers": {
"xdata-mcp": {
"url": "https://api.xdata.kr/mcp"
}
}
}
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
hometax__cash_receipt__daily_issue__cancel
hometax__cash_receipt__daily_issue__modify
hometax__cash_receipt__daily_issue__search
hometax__cash_receipt__issue_individual
hometax__cash_receipt__purchase__search_history
hometax__cash_receipt__sales__search_history
hometax__cash_receipt__sales__search_summary
hometax__certificate__apply__business_registration
hometax__certificate__apply__business_registration_reissue
hometax__certificate__apply__financial_statement
hometax__certificate__apply__national_tax_payment
hometax__certificate__apply__tax_payment_record
hometax__certificate__apply__vat_standard
hometax__certificate__apply_auto
hometax__certificate__apply_auto_download
hometax__certificate__apply_with_template
hometax__certificate__download
hometax__certificate__list
hometax__certificate__list_templates
hometax__etax__business_info__get
hometax__etax__client_info__get
hometax__etax__invoice__issue
hometax__etax__invoice__modify
hometax__etax__invoice__search_detail
hometax__etax__invoice__search_list
hometax__etax__invoice__search_statistics
hometax__etax__invoice__search_summary
hometax__session__login
hometax__session__user_info
hometax__tax__business_registration__search_info
hometax__tax__business_registration__search_status
hometax__tax__credit_card__search_sales_data
hometax__tax__electronic_notice__check_status
hometax__tax__my_tax_agent__search
hometax__tax__notice__search_history
hometax__tax__overdue__search_history
hometax__tax__payment_due__search_or_pay
hometax__tax__payment_statement__search
hometax__tax__payment_statement__search_submit_history
hometax__tax__refund__search_detail
hometax__tax__return_history__search_vat
hometax__tax__trade_partner__search_list
hometax__tax__unclaimed_refund__search
hometax__tax__withholding__regular_report__basic_save
hometax__tax__withholding__regular_report__detail_save
hometax__tax__withholding__regular_report__init
hometax__tax__withholding__regular_report__preview
hometax__tax__withholding__regular_report__review
hometax__tax__withholding__regular_report__submit
fourinsure__b1__business_establishment__init
fourinsure__b1__certificate__apply__init
fourinsure__b1__certificate__apply__submit
fourinsure__b1__certificate__history__detail
fourinsure__b1__certificate__history__detail_init
fourinsure__b1__certificate__history__list
fourinsure__b1__certificate__history__list_init
fourinsure__b1__certificate__history__pdf_download
fourinsure__b1__civil_receipt__history__list
fourinsure__b1__civil_receipt__history__list_init
fourinsure__b1__common__com_cd__list
fourinsure__b1__member_qualification__acqs_init
fourinsure__b1__member_qualification__acqs_member_lookup
fourinsure__b1__member_qualification__acqs_precheck
fourinsure__b1__member_qualification__acqs_save
fourinsure__b1__member_qualification__chg_init
fourinsure__b1__member_qualification__dependent_init
fourinsure__b1__member_qualification__los_exist_check
fourinsure__b1__member_qualification__los_init
fourinsure__b1__member_qualification__los_member_lookup
fourinsure__b1__member_qualification__los_save
fourinsure__b1__payroll__amount_change__init
fourinsure__b1__resources__faqs__detail
fourinsure__b1__resources__faqs__list
fourinsure__b1__resources__faqs__list_init
fourinsure__b1__resources__files__download
fourinsure__b1__resources__forms__attachments
fourinsure__b1__resources__forms__detail
fourinsure__b1__resources__forms__list
fourinsure__b1__resources__forms__list_init
fourinsure__b1__resources__notices__institutions__attachments
fourinsure__b1__resources__notices__institutions__detail
fourinsure__b1__resources__notices__institutions__list
fourinsure__b1__resources__notices__institutions__list_init
fourinsure__b1__workplace__auto_transfer_unagreement__init
fourinsure__b1__workplace__withdrawal__init
fourinsure__b1__workplace_support__household_worker__init
fourinsure__b1__workplace_support__insurance_support__init
fourinsure__session__login
google__account__status
google__ads__channels__report
google__ads__demand_gen__campaign__create
google__ads__demand_gen__campaign__update
google__ads__demand_gen__report
google__ads__display__campaign__create
google__ads__display__campaign__update
google__ads__display__report
google__ads__pmax__campaign__create
google__ads__pmax__campaign__update
google__ads__pmax__report
google__ads__search__campaign__create
google__ads__search__campaign__update
google__ads__search__report
google__ads__video__asset__create
google__analytics__measurement__audit
google__analytics__measurement__create
google__analytics__measurement__update
google__analytics__report
google__search_console__index_status
google__search_console__performance
google__search_console__site__add
google__search_console__site__remove
google__search_console__sitemap__delete
google__search_console__sitemap__submit
google__tag_manager__tag__create
google__tag_manager__tag__update
google__tag_manager__version__publish
google__youtube__analytics__report
google__youtube__playlist__create
google__youtube__playlist__item__add
google__youtube__report_job__create
google__youtube__report_job__read
google__youtube__video__caption__add
google__youtube__video__thumbnail__set
google__youtube__video__update
google_marketing_pack__report_v1__generate
nhis_edi__business__basic_info
nhis_edi__certificates__health_premium_payment__individual__init
nhis_edi__certificates__payment_completion__init
nhis_edi__certificates__payment_completion__issue
nhis_edi__certificates__workplace_application_notice__apply__init
nhis_edi__certificates__workplace_application_notice__issued__init
nhis_edi__certificates__workplace_member_list__apply__init
nhis_edi__certificates__workplace_member_list__issued__init
nhis_edi__document_box__sent_documents__detail
nhis_edi__document_box__sent_documents__list
nhis_edi__file_report__init
nhis_edi__hr_payroll__edi_electronic_notices__contract
nhis_edi__hr_payroll__edi_electronic_notices__search_options
nhis_edi__hr_payroll__health_premiums__employee_details
nhis_edi__hr_payroll__health_premiums__summary
nhis_edi__hr_payroll__payment_status__list
nhis_edi__hr_payroll__premium_notices__detail
nhis_edi__hr_payroll__premium_notices__search
nhis_edi__hr_payroll__premium_notices__select
nhis_edi__hr_payroll__processing_results__list
nhis_edi__hr_payroll__received_documents__options
nhis_edi__public__forms__list
nhis_edi__public__notices__list
nhis_edi__public__resources__list
nhis_edi__qualification__acquisition__init
nhis_edi__qualification__change__init
nhis_edi__qualification__dependent__init
nhis_edi__qualification__loss__init
nhis_edi__session__login
nhis_edi__session__status
nps_edi__auth__npki_session__login
nps_edi__auth__session__status
nps_edi__b1__certificates__application_results__search
nps_edi__b1__certificates__membership__apply
nps_edi__b1__certificates__membership__issue
nps_edi__b1__certificates__membership__subscribers__search
nps_edi__b1__declarations__processing_results__search
nps_edi__b1__lookups__pension_support_recovery_decisions__search
nps_edi__b1__lookups__workplace_premium_notices__search
nps_edi__b1__lookups__workplace_premium_support__details
nps_edi__b1__lookups__workplace_subscribers__status
nps_edi__b1__national_pension_premiums__guide
nps_edi__b1__national_pension_premiums__payment_history
nps_edi__b1__national_pension_premiums__retro_payments
nps_edi__b1__national_pension_premiums__subscribers
nps_edi__b1__national_pension_premiums__summary
nps_edi__b1__national_pension_premiums__support_details
nps_edi__b1__pension_notices__search
nps_edi__b1__pension_notices__select
nps_edi__b1__pension_notification_documents__detail
nps_edi__b1__pension_notification_documents__search
nps_edi__b1__workplace__main_basic_info
work24__auth__npki_session__login
work24__auth__session__status
work24__subsidy__application__attachment_delete
work24__subsidy__application__delete
work24__subsidy__application__draft_validate
work24__subsidy__application__history
work24__subsidy__application__init
work24__subsidy__application__modify
work24__subsidy__application__requirements
work24__subsidy__application__submit
work24__subsidy__application__target_init
work24__subsidy__application__target_save
work24__subsidy__application__target_search
work24__subsidy__application__withdraw
work24__subsidy__application__workplace_save
work24__subsidy__diagnosis__search
kb_biz_card__approvals__init
kb_biz_card__approvals__page
kb_biz_card__approvals__result
kb_biz_card__approvals__search
kb_biz_card__common__cards__select
kb_biz_card__common__departments__select
kb_biz_card__payments__init
kb_biz_card__payments__page
kb_biz_card__payments__result
kb_biz_card__payments__search
kb_biz_card__purchases__init
kb_biz_card__purchases__page
kb_biz_card__purchases__result
kb_biz_card__purchases__search
kb_biz_card__session__login
wetax__session__login
wetax__tax__local_income__special_withholding__adjustment_save
wetax__tax__local_income__special_withholding__cancel
wetax__tax__local_income__special_withholding__declarant_save
wetax__tax__local_income__special_withholding__init
wetax__tax__local_income__special_withholding__payment_status
wetax__tax__local_income__special_withholding__review
wetax__tax__local_income__special_withholding__search_history
wetax__tax__local_income__special_withholding__statement_save
wetax__tax__local_income__special_withholding__submit
wetax__tax__local_income__special_withholding__target_save
comwel__auth__npki_session__login
comwel__auth__session__status
comwel__info__individual_billed_premium__detail
comwel__info__individual_billed_premium__worker_select
comwel__info__premium_billing_notice__detail
comwel__info__premium_billing_notice__search
opendata__env__waste_sanction
opendata__g2b__sanction
opendata__kiscon__sanction
opendata__nts__status
opendata__nts__validate
payroll_artifact__payslip_xlsx
payroll_artifact__register_xlsx
payroll_pack__employment_insurance_summary_v1__generate
payroll_pack__insurance_deduction_material_v1__generate
payroll_pack__premium_summary_v1__generate
shinhan_easy__accounts__list
shinhan_easy__accounts__transaction_history__search
shinhan_easy__auth__id_password_session__login
shinhan_easy__linked_accounts__list
kb_fast_account__accounts__list
kb_fast_account__accounts__transaction_history__search
kb_fast_account__session__login
ibk_fast_account__accounts__list
ibk_fast_account__accounts__quick_summary__get
ibk_fast_account__session__login
company_info_pack__brief_v1__generate
xdata__job__result
Tools this server used to expose. Anything built against them stopped working on the day they went.
payroll_pack__smoke__generate
hana_fast_account__accounts__list
woori_bank__accounts__list
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://api.xdata.kr/mcp | streamable-http | answering | 639 ms | 12 min ago |
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