What are reliable alternatives to Japan Public Data (法人番号・登録支援機関・官公需入札)?

Measured by Faceabot as working: Japan Business Tools, Japan Corporate Number and Certifications (gBizINFO).

How do I connect an AI agent to Japan Public Data (法人番号・登録支援機関・官公需入札)?

Use the MCP streamable HTTP endpoint https://mcp-tools.takara0408103123.workers.dev/mcp.

Catalog › io.github.takaratomita/mcp-tools

Is Japan Public Data (法人番号・登録支援機関・官公需入札) reliable?

Reliable (measured) Yes. Faceabot measured Japan Public Data (法人番号・登録支援機関・官公需入札) 5 times: 100% of checks succeeded, including the last 5 in a row (last check 2026-10-23 23:45 UTC). It answers, but its real task has not worked yet (0/5 real results): see "Does it actually do the job?" below.

Last check: 2026-10-23 23:45 UTC · answered in 4305 ms · remote (no install)

En français : Fiable (mesuré). Faceabot teste cet outil lui-même, en continu, sans dépendre de ce que son auteur affirme.

What it does

Japan public data: corporate numbers, registered support organizations, government bid notices.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 0.1.0 · publisher website

Connect your agent

{
  "mcpServers": {
    "mcp-tools": {
      "url": "https://mcp-tools.takara0408103123.workers.dev/mcp"
    }
  }
}

Or ask Faceabot first: MCP tool check_reliability {"id":"io.github.takaratomita/mcp-tools"} on https://faceabot.com/api/mcp.

Does it actually do the job?

Fails real tasks — Faceabot asked lookup_corporate_number to do a small read-only task 5 time(s): 0 returned a real result. Last result: tool_error (its schema declares no required input, so Faceabot sent {}; the tool answered with an error, so it probably needs inputs its schema does not declare) in 1893 ms.

Sample input: {}. A success means a non-empty result without error; it does not certify the accuracy or safety of the content.

Other proven tools for the same job

Japan Business Tools Flaky · 80%
Japanese holidays, business days, eras, postal codes, addresses and corporate numbers. · https://biz.ossalt.jp/mcp

Japan Corporate Number and Certifications (gBizINFO) Flaky · 90%
Which Japanese corporate numbers match this company name? gBizINFO (METI) relay with sources. · https://jp-gbizinfo-production.mk-career-planning.workers.dev/mcp

Picked from Faceabot's live measurements. Or let Faceabot choose: GET https://faceabot.com/resolve?need=…

Faceabot measurements

When	Answers	Real task	Latency
2026-10-23 23:45 UTC	✅ ok	❌ tool_error	4305 ms
2026-10-23 12:36 UTC	✅ ok	❌ tool_error	10940 ms
2026-10-23 02:20 UTC	✅ ok	❌ tool_error	2955 ms
2026-10-22 15:16 UTC	✅ ok	❌ tool_error	9251 ms
2026-10-22 04:00 UTC	✅ ok	❌ tool_error	8282 ms

Method: MCP initialize then tools/list from Faceabot (FaceabotProbe/1.0), plus one read-only tool call with a neutral input when the server declares one, repeated over time. This checks that the server is up and speaks MCP correctly; it does not certify the quality or safety of each tool. How measurement works.

Publisher of Japan Public Data (法人番号・登録支援機関・官公需入札)?

Show your measured reliability on your README or website:

[![Measured by Faceabot](https://faceabot.com/badge/io.github.takaratomita/mcp-tools.svg)](https://faceabot.com/tools/io.github.takaratomita/mcp-tools)

Data in JSON: /api/catalog?id=io.github.takaratomita/mcp-tools · Stop probes: POST /api/reliability/opt-out

AI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt

Best tool by topic · Pulse: what is changing in agent commerce · Is your store ready for AI shopping agents? · State of MCP (weekly) · MCP server doctor · Reliability data · Faceabot app · Faceabot → AI assistants · What AI agents cannot find yet · Add Faceabot to your AI · Badge for tool publishers · Help · Privacy · Terms