Surface history — api.xdata.kr

An observation record, not an assessment. Every row below is a change we recorded directly, with the content hash before and after. https://api.xdata.kr/mcp

18
distinct tool surfaces served
15
transitions observed
15
carried no version signal
247
tools on the current surface

15 of these transitions happened while the reported version string stayed the same. A consumer pinning that version would have received a different tool surface with nothing in the version to indicate it. That is a compatibility and review fact, not a security finding and not an allegation of wrongdoing — unversioned iteration is normal practice and is frequently deliberate.

Recorded changes

observed at (UTC)changeversion signalreported versiontoolssurface hash
2026-10-10 19:40:03Z DESCRIPTION_CHANGED SILENT — version string did not move 1.0.0 (unchanged) no tool-name change recorded 6e636d486a61 → ed91c6a7fdcd
2026-10-10 19:40:03Z PARAMS_CHANGED SILENT — version string did not move 1.0.0 (unchanged) no tool-name change recorded e143c520df04 → 81bfa0ba5758
2026-10-10 19:40:03Z SURFACE_CHANGED SILENT — version string did not move 1.0.0 (unchanged) +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__member_qualification__acqs_init +fourinsure__b1__member_qualification__chg_init +fourinsure__b1__member_qualification__dependent_init +fourinsure__b1__member_qualification__los_init +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 +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__create +google__analytics__measurement__update +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 +hometax__cash_receipt__daily_issue__cancel +hometax__cash_receipt__daily_issue__modify +hometax__cash_receipt__issue_individual +hometax__certificate__apply_auto_download +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 +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__qualification__acquisition__init +nhis_edi__qualification__change__init +nhis_edi__qualification__dependent__init +nhis_edi__qualification__loss__init +nps_edi__b1__certificates__application_results__search +nps_edi__b1__certificates__membership__apply +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 +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 +work24__subsidy__application__attachment_delete +work24__subsidy__diagnosis__search 8dd63bc837c7 → 64284fd8d9c0
2026-10-10 13:40:03Z DESCRIPTION_CHANGED SILENT — version string did not move 1.0.0 (unchanged) no tool-name change recorded 7749b6cc9009 → 6e636d486a61
2026-10-10 13:40:03Z PARAMS_CHANGED SILENT — version string did not move 1.0.0 (unchanged) no tool-name change recorded 5631c09eefa8 → e143c520df04
2026-10-09 07:40:03Z DESCRIPTION_CHANGED SILENT — version string did not move 1.0.0 (unchanged) no tool-name change recorded 1a72e4e08600 → 7749b6cc9009
2026-10-09 07:40:03Z PARAMS_CHANGED SILENT — version string did not move 1.0.0 (unchanged) no tool-name change recorded 118d6f64a471 → 5631c09eefa8
2026-10-08 13:40:03Z DESCRIPTION_CHANGED SILENT — version string did not move 1.0.0 (unchanged) no tool-name change recorded 6990d434bea0 → 1a72e4e08600
2026-10-08 13:40:03Z SURFACE_CHANGED SILENT — version string did not move 1.0.0 (unchanged) +xdata__job__result 4f4bde15c2d1 → 8dd63bc837c7
2026-10-07 13:40:04Z SURFACE_CHANGED SILENT — version string did not move 1.0.0 (unchanged) +fourinsure__b1__common__com_cd__list +fourinsure__b1__member_qualification__acqs_member_lookup +fourinsure__b1__member_qualification__acqs_precheck +fourinsure__b1__member_qualification__acqs_save +fourinsure__b1__member_qualification__los_exist_check +fourinsure__b1__member_qualification__los_member_lookup +fourinsure__b1__member_qualification__los_save 9903285518f4 → 4f4bde15c2d1
2026-10-03 07:40:04Z SURFACE_CHANGED SILENT — version string did not move 1.0.0 (unchanged) −hana_fast_account__accounts__list −woori_bank__accounts__list e9d89e1a998c → 9903285518f4
2026-09-29 07:40:03Z SURFACE_CHANGED SILENT — version string did not move 1.0.0 (unchanged) +nps_edi__b1__certificates__membership__issue +nps_edi__b1__certificates__membership__subscribers__search 0e417eabd75b → e9d89e1a998c
2026-09-28 13:40:03Z SURFACE_CHANGED SILENT — version string did not move 1.0.0 (unchanged) +hana_fast_account__accounts__list +ibk_fast_account__accounts__list +kb_fast_account__accounts__list +shinhan_easy__linked_accounts__list +woori_bank__accounts__list 6dc20d06a808 → 0e417eabd75b
2026-09-27 01:40:02Z SURFACE_CHANGED SILENT — version string did not move 1.0.0 (unchanged) +company_info_pack__brief_v1__generate eff804f2a701 → 6dc20d06a808
2026-09-25 13:40:03Z SURFACE_CHANGED SILENT — version string did not move 1.0.0 (unchanged) +google__account__status +google__analytics__measurement__audit +google__analytics__report +google__search_console__index_status +google__search_console__performance +google_marketing_pack__report_v1__generate a226d5132879 → eff804f2a701

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Still OS surface record

Markdown — for a README

[![Still OS surface record](https://stillosdigitalholdings.com/surface/badge/api.xdata.kr.svg)](https://stillosdigitalholdings.com/surface/api.xdata.kr)

HTML

<a href="https://stillosdigitalholdings.com/surface/api.xdata.kr"><img src="https://stillosdigitalholdings.com/surface/badge/api.xdata.kr.svg" alt="Still OS surface record"></a>
Is this your server? We will watch this surface continuously and tell you the moment it changes — the version string, which tools moved, and the hash before and after. You do not get a better record by asking; the record is whatever we observe. Monitor this surface.
Right of reply. If any row is wrong — a change we attributed to you that isn't yours, a hash that doesn't match, a host that was reassigned — say so and we will correct or withdraw the record and publish the correction alongside it. Dispute or correct this record. We will also remove this page on request from the operator of api.xdata.kr.

Ecosystem context — not specific to this server

This section is identical for ~92% of publishers and is published as shared context, not as a finding about api.xdata.kr. 90 dependency packages sit beneath the measured MCP population; 41 have a single maintainer and 31 have not published in over two years. The widest is zod at 80.46% of npm-backed servers (8529 servers, 1 maintainer, last publish 2026-09-13). These are properties of the shared SDK dependency closure. Any page claiming this set as one operator's personal exposure is misreading a universal fact as a private one.
Source: state/mcp-census/chokepoint-maintainers.json, as_of 2026-10-07.

Elsewhere in this record set

We publish a separate trust and dependency assessment for this same host: api.xdata.kr — operator dossier. That one grades the published artifact; this one records what the endpoint actually served.

Index of everything covered: all observed hosts · machine-readable: changes feed (JSON), Atom, sitemap.

Other hosts observed around the same time

api.spellbook-finance.com · api.assetfare.dev · mcp.ludo.ai · nova.civai.co · mcp.dropenginehq.com · exchange-production-9123.up.railway.app · youspot.com · tradingstrategies.work · mcp.foxform.app · aspern.org · compensationprofessional.com · mcpconnector-gtlizqtvza-uw.a.run.app

Coverage and limits

Observation window 2026-09-21 → 2026-10-10. 22,294 servers were observed; 2,214 were seen to change and 20,080 were observed and recorded no change — that negative control is why a non-zero count here means something. Across the corpus, 4,781 of 6,334 changes carried no version signal, and 1,690 of those added or removed tools.

What this does NOT cover: servers outside the observed set; changes that occurred before 2026-09-21; changes that began and reverted between two observations; and any server reachable only with credentials we do not hold. A server's absence from this record is not evidence it did not change — only that we did not observe it.

Universe captured 2026-10-10T19:40:03.823Z. Produced by core/surface_history_page.cjs (reads core/surface_clock producers). Hashes are of the served tool surface and are recomputable from the server's own response.