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JP Data (Japanese Public Business Data)

Japanese open-data MCP server: corporate-number validation, zengin bank codes, national holidays

Connector by kimotostudio · GitHub account verified by the MCP Registry

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Japanese open-data MCP server: corporate-number validation, zengin bank codes, national holidays

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools
8 read · 0 write · 0 deleteRead-only
Secrets
None asked for
Install scripts
Not scanned yet
Runs as
Downloaded binary

Tools by what they do 8

Read from the source code; the running server may list different tools.

Read 8 · Look things up without changing anything.

  • is_japan_holiday
  • japan_holidays
  • lookup_bank
  • lookup_branch
  • lookup_corporate_number
  • search_banks
  • search_corporations_by_name
  • validate_corporate_number

Network hosts it talks to 1

  • github.com · found in install command

Tools (8)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • is_japan_holiday

    Check whether a date (YYYY-MM-DD) is a Japanese national holiday.

  • japan_holidays

    List Japanese national holidays for a year (official Cabinet Office syukujitsu.csv, bundled).

  • lookup_bank

    Look up a Japanese bank by its 4-digit zengin bank code (統一金融機関コード). Returns name / kana / hiragana / romaji.

  • lookup_branch

    Look up a bank branch by 4-digit bank code + 3-digit branch code (支店コード). Branch data is lazily fetched from the public zengin-code dataset and cached locally.

  • lookup_corporate_number

    Enrich a 13-digit corporate number with registry data (name, address, kind, dates). Uses the NTA 法人番号 Web-API when NTA_APP_ID is set; otherwise falls back to bundled SYNTHETIC sample data (clearly tagged).

  • search_banks

    Search Japanese banks by name fragment (kanji / kana / hiragana / romaji all matched). Returns zengin codes + names.

  • search_corporations_by_name

    Search corporations by (partial) name. Live NTA Web-API when NTA_APP_ID is set; otherwise searches the bundled SYNTHETIC sample set.

  • validate_corporate_number

    Validate a 13-digit Japanese corporate number (法人番号) offline: format + official NTA check-digit formula. Does NOT confirm the company exists in the registry (use lookup_corporate_number for that).

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Last commit
Aug 5, 2026 (2 months ago)
Last release
Aug 5, 2026 (2 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name
io.github.kimotostudio/jp-data-mcp
Version
0.1.0
Auth
API key
Packages
mcpb https://github.com/kimotostudio/jp-data-mcp/releases/download/v0.1.0/jp-data-mcp-0.1.0.mcpb
License
MIT
Repository
github.com/kimotostudio/jp-data-mcp
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
Official MCP Registrygithub-graphql
Cite this page

JP Data (Japanese Public Business Data) MCP server. Agent Mart. https://agentmart.dev/connectors/kimotostudio-jp-data-mcp (last updated 2026-10-24)