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satoru yoshimura

japan_data_tools

Building practical APIs and data tools for Japan using official public data.

ACTOR STATS

1 public Actor

2 total users

1 monthly user

>99% runs succeeded

Japan Data Tools

I build practical APIs and structured datasets that turn official Japanese public data into automation-ready signals.

Current focus:

  • Japanese corporate events
  • New company registrations
  • Company name and address changes
  • Corporate closures
  • Official-source monitoring feeds

Principles

  • Official and traceable data sources
  • Clear source attribution
  • Machine-readable output
  • Stable event IDs for deduplication
  • Practical APIs for automation and monitoring

Current Actor

Japan New Companies & Corporate Changes API

A daily feed of newly published Japanese corporate events derived from official National Tax Agency differential data.

Events include:

  • NEW_COMPANY
  • NAME_CHANGE
  • ADDRESS_CHANGE
  • CLOSED

Public Actors