Japan Corporate Number (NTA)
What does Japan's tax agency publish for this corporate number? NTA Web-API relay with sources.
MCP server · by mk-career-planning
About
Japan Corporate Number (NTA) is an MCP server published by mk-career-planning. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-11-07 and have recorded no change since. As of our marketplace pass on 2026-11-12.
What it asks for
- Runs remotely
None of the marketplaces we read publishes its tools or the settings it asks for.
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Works with
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
A one-click link opens the client, which asks you to confirm before it adds the server.
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a remote MCP server
Built from what Official MCP Registry declares.
claude mcp add --transport http jp-corporate-number https://jp-corporate-number-production.mk-career-planning.workers.dev/mcp
[mcp_servers.jp-corporate-number]
url = "https://jp-corporate-number-production.mk-career-planning.workers.dev/mcp"
{
"mcpServers": {
"jp-corporate-number": {
"url": "https://jp-corporate-number-production.mk-career-planning.workers.dev/mcp"
}
}
}
Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 0.1.0 | No figure published | Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
What changed
- Became a product we track
- Official MCP Registry: appeared
Similar plugins
Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.
-
Japan Qualified Invoice Issuers (Corporations)
Japan NTA qualified invoice issuer status of corporations by T-number. Records daily changes.
-
Search Japanese corporations and verify invoice numbers using official National Tax Agency data.
-
japan-company-info-mcp-bridge io.github.dqj1998/japan-company-info-mcp-bridge
Offline MCP for verified Japanese corporate data: EDINET XBRL financials, NTA IDs, gBizINFO.
-
Verify Japanese companies: invoice T-numbers, Corporate Numbers, English names, shareholders
-
Japan Public Data (法人番号・登録支援機関・官公需入札)
Japan public data: corporate numbers, registered support organizations, government bid notices.
-
mcp-jp-corporate-id io.github.skypier-jp-works/mcp-jp-corporate-id
Validates and normalizes Japanese corporate numbers and invoice registration numbers (format only).
-
HojinCheck — Japanese corporate verification API (hojin = 法人/corporate entity)
Verify Japanese companies, invoice-issuer registrations and addresses against government open data.
-
Japan company, T-number, invoice issuer and address checks for AI agents, paid per call via x402.
-
houki-nta-mcp io.github.shuji-bonji/houki-nta-mcp
Japan NTA tax notices (tsutatsu) and Q&A, marked with legal_status and linked back to the law.
-
JP Data (Japanese Public Business Data)
Japanese open-data MCP server: corporate-number validation, zengin bank codes, national holidays
Similar plugins by marketplace
The same question asked of one marketplace at a time: is there an analog of this plugin there?
Has a listing on Claude Code: claude-plugins-community (5)
-
openregistry io.github.sophymarine/openregistry
Live data from 80+ official national company registries. Unmodified. For KYB and due diligence.
-
Give Claude deep UK accounting knowledge. This plugin replaces the generic finance responses with regulation-aware workflows built specifically for British businesses. It covers…
-
Connect Claude and other AI agents to Merit Aktiva — Estonia's most-used accounting software — and let them handle real bookkeeping safely. Six Claude Code skills that teach…
-
AI-powered bookkeeping, invoicing, and tax filing for European entrepreneurs. Manage your business finances directly from Claude — create and send invoices, categorize bank…
-
Give Claude deep German accounting knowledge for GmbH, GbR, Einzelunternehmen, and Freiberufler. This plugin replaces the generic finance responses with regulation-aware workflows…
Has a listing on Claude Code: claude-plugins-official (5)
-
Search companies and contacts, enrich leads, find lookalikes, and get AI-ranked contact recommendations. Pre-built skills chain multiple ZoomInfo tools into complete B2B sales…
-
Guides AI assistants that use the NetSuite AI Connector: tool-selection order, output formatting, NetSuite domain knowledge, multi-subsidiary and currency handling, and SuiteQL…
-
Director-level finance analysis on live NetSuite data: financial reporting, period close, variance, aging and reconciliation reviews, cash reporting, and board-ready narratives…
-
Carta Cap Table plugin — skills and hooks for querying cap tables, grants, SAFEs, 409A valuations, waterfall scenarios, and more
-
Carta Investors plugin — skills for querying investor data, performance benchmarks, regulatory reporting, AGM deck generation, brand extraction, and more via the Carta MCP Server.
Has a listing on Claude: knowledge-work-plugins (5)
-
Search companies and contacts, enrich leads, find lookalikes, and get AI-ranked contact recommendations. Pre-built skills chain multiple ZoomInfo tools into complete B2B sales…
-
Deal-work workflows powered by Grasp company lookup, table creation, import, buyer, transaction, table enrichment, contact, and market research tools.
-
Guides AI assistants that use the NetSuite AI Connector: tool-selection order, output formatting, NetSuite domain knowledge, multi-subsidiary and currency handling, and SuiteQL…
-
Director-level finance analysis on live NetSuite data: financial reporting, period close, variance, aging and reconciliation reviews, cash reporting, and board-ready narratives…
-
Carta Cap Table plugin — skills and hooks for querying cap tables, grants, SAFEs, 409A valuations, waterfall scenarios, and more
Has a listing on Codex: openai-curated (openai/plugins) (5)
-
Public equity investing workflows for listed-company research, earnings analysis, valuation, model updates, long/short pitches, catalysts, thesis tracking, ETF/index and…
-
Bring operational data and context into the flow of your ChatGPT conversations. You can ask questions, create and update records, and analyze your data—all through conversation…
-
Develop your payments integration faster with the ability to create products, prices, and payment links directly in ChatGPT. Run your business from ChatGPT with the ability to…
-
Work with SharePoint using the configured Microsoft SharePoint app connector.
-
Connect Microsoft Outlook Calendar for scheduling, daily briefs, event prep, and safe meeting changes.
Has a listing on Community GitHub marketplaces (5)
-
確定申告自動化 Claude Code Plugin。帳簿管理から e-Tax 入力代行まで。
-
Working in Japan: year-end tax adjustment (年末調整), the tax return (確定申告) with e-Tax, resignation procedures from notice to unemployment benefit, and the 稟議書 approval request, in…
-
EMTA (Estonian Tax and Customs Board) CLI skill. Authenticate via Smart-ID, list and view TSD declarations.
-
norman-finance
Connect Norman Finance to your AI for European bookkeeping, invoices and tax workflows. Polish tools include JDG KPiR, sp. z o.o. ledgers, JPK registers, estimates and existing…
-
China operations — KYC document parsing and rules
Has a listing on Copilot CLI: github/awesome-copilot (5)
-
Mastercard Developers plugin to help build integrations with Mastercard APIs, including best practices and the Mastercard Developers MCP server.
-
Three-layer verification pipeline for AI output. Extracts claims, finds sources, and flags hallucination risks so humans can verify before acting.
-
Safe BLE diagnostics, evidence workflows, and guarded automation for AI agents.
-
Query Anarlog meetings locally, or connect through OAuth to read opted-in Cloud snapshots.
-
Self-configuring status briefing generator. Learns your communication style from examples, discovers your data sources, and produces draft updates for any audience on demand.
Has a listing on Copilot CLI: github/copilot-plugins (5)
-
workiq
Query Microsoft 365 data with natural language — emails, meetings, documents, Teams messages, and more.
-
Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.
-
workiq-productivity
WorkIQ productivity skills powered by the local WorkIQ CLI — read-only insights across email, meetings, calendar, Teams, SharePoint, projects, and people.
-
Build Power Apps Canvas Apps using the Canvas Authoring MCP server.
-
mcp-apps
Generate MCP App widgets for MCP tools. Produces self-contained HTML widgets using the MCP Apps protocol.
Has a listing on Cursor: cursor/plugins (5)
-
Research private companies, deals, investors, and funds.
-
Read and write invoices, contacts, reports, and payroll.
-
Enrich people and companies, run AI research agents.
-
Query expenses, travel bookings, policies, and cards.
-
Microsoft Dynamics 365 Business Central
Work with customers, vendors, items, sales and purchase documents, and the general ledger in Business Central.
Has a listing on Docker MCP Catalog (5)
-
Tools for cross-border payments, taxes, and compliance.
-
mcp-explorium ai.explorium/mcp-explorium
Access live company and contact data from Explorium's AgentSource B2B platform.
-
Production-ready RAG service to search and retrieve data from your documents.
-
An MCP server to help make U.S. Government open datasets AI-friendly.
-
The Official Model Context Protocol (MCP) server for Kagi Search & other tools.
Has a listing on Official MCP Registry (5)
-
Japan Qualified Invoice Issuers (Corporations)
Japan NTA qualified invoice issuer status of corporations by T-number. Records daily changes.
-
Search Japanese corporations and verify invoice numbers using official National Tax Agency data.
-
japan-company-info-mcp-bridge io.github.dqj1998/japan-company-info-mcp-bridge
Offline MCP for verified Japanese corporate data: EDINET XBRL financials, NTA IDs, gBizINFO.
-
Verify Japanese companies: invoice T-numbers, Corporate Numbers, English names, shareholders
-
Japan Public Data (法人番号・登録支援機関・官公需入札)
Japan public data: corporate numbers, registered support organizations, government bid notices.
Has a listing on PyPI (MCP servers) (5)
-
Korean tax calculation and tax-audit judgment MCP: 125 tools with statutory citations.
-
Russian tax authority (FNS) counterparty checks: status, debts, blocks. Due diligence MCP.
-
edinet-mcp io.github.ajtgjmdjp/edinet-mcp
Access Japanese financial disclosures (EDINET). Search companies, retrieve BS/PL/CF statements.
-
kra-mcp io.github.gabrielmahia/kra-mcp
Kenya tax tools: PAYE calculator (2026 rates), VAT, PIN, filing calendar, withholding. Estimates.
-
prawo-pl-mcp io.github.matematicsolutions/prawo-pl-mcp
One MCP server for Polish legal data - courts, legislation, KRS, tax, KIO, UODO via 4 unified tools
Has a listing on npm registry (MCP servers) (5)
-
houki-nta-mcp io.github.shuji-bonji/houki-nta-mcp
Japan NTA tax notices (tsutatsu) and Q&A, marked with legal_status and linked back to the law.
-
companies-house io.github.aicayzer/companies-house
UK Companies House public register: search companies, officers, ownership, filings and documents.
-
UK Companies House due diligence and KYB (Registrum)
UK Companies House due diligence: beneficial owners, directors, ECCTA, accounts. Hosted, no key
-
CLI for the UK Companies House public register — company search, records, officers, ownership, filings and filed documents. Bring your own free API key.
-
dd dev.cz-agents/dd
Czech & EU due diligence in one call — facts, insolvency, sanctions, VAT, risk score, UBO chain.
Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
Want this mark on your plugin in our catalog?
Prove you maintain it with a file in its repository, a file on your domain or a DNS record, and you can show this mark on the card, with live banners for your site and README. How verification works
You also get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.