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"laws and regulations" × "Digital" hackathon will be held.

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Digital Agency

From Tuesday, December 9, 2025 to Tuesday, March 10, 2026, the "laws and regulations × Digital" Hackathon (hereinafter referred to as the "Hackathon") will be held, in which teams compete for service development that combines the areas of laws and regulations and digital.

1. Overview

In Digital Agency, through the e-Gov laws and regulations Search Engine , we provide "laws and regulations, etc.," and through the provision of e-LAWS, we are working to improve the efficiency of work such as drafting laws and regulations proposals for national government officer.

In order to further develop these efforts, this hackathon will be held with the aim of leading to the following results.

  • Further streamlining of national government officer's legislative drafting and examination work
  • Create a base registry that provides accurate and easy-to-understand information on laws and regulations
  • Promoting the Development of Industries and Technologies and the Creation of New Services by Utilizing Data-related to laws and regulations

*Past Meetings Held
Fiscal year 2024: "laws and regulations" × "Digital" hackathon
Fiscal year 2023:' laws and regulations API-hackathon' in

2. Details of offering

Based on the purpose of this hackathon, we will invite a wide range of works that utilize "Digital Agency data" and "laws and regulations APIs" provided by laws and regulations and combine them with technologies such as AI from the following three perspectives.
Examples of development are given below, but do not limit yourself to them. Feel free to develop.

  • Efficiency of legal affairs
    Development of tools, etc. to improve the efficiency of "legislative affairs," such as the work of drafting bills and the work of reviewing bills by the national government officer
  • Development of laws and regulations Database and Provision of laws and regulations Database to Society
    Consideration was given to the ideal way of providing laws and regulations and other information through the e-Gov laws and regulations Search, and development of a system to provide laws and regulations and other information in an easy-to-understand manner to citizens
    • Example of development
      • The ability to add a pop-up function for the referenced text on the e-Gov laws and regulations search screen (Introduction of works of the laws and regulations Hackathon 2023 Business and Law Award )
      • Function to link data such as laws and regulations on the e-Gov laws and regulations search engine with data on court cases, etc.
  • Laws and regulations, etc. Promoting data utilization and business creation
    Development that improves convenience for citizens by creating new private-sector services that utilize laws and regulations and other information provided by the government

3. Event Schedule

The Hackathon will be held from December 9, 2025 (Tuesday) to March 10, 2026 (Tuesday). During the event, each participant will be required to develop their own work in their own environment.

Events during the Hackathon

Information sessions, presentations, and other events will be held according to the following schedule. Details and schedule changes will be communicated to the e-mail addresses of those who have been selected to attend.

  • Kickoff Event on Tuesday, December 9, 2025
    • Content: Introduction of ideas that can be used as a reference for the development of works, introduction of efforts using laws and regulations APIs and generative AI in Digital Agency, exchange with Digital Agency staff for the purpose of coming up with ideas and brushing up, etc.
    • Date: December 9th (Tue) 13:00-18:00
    • Venue: Hybrid format of face-to-face venue and online venue
    • Meeting venue: Near Ichigaya station
  • December 17, 2025 (Wed) Online consultation
    • Content: Allow time for teams to discuss development policies and progress
    • Date: December 17 (Wed) from 10:00 to 18:00, each team will spend about 30 minutes.
    • Format: Online
  • Presentation and award ceremony on Tuesday, March 10, 2026
    • Content: Presentation on the developed works of the qualified teams, award ceremony, exchange among participants, etc.
    • Date: March 10 (Tue) 13:00-18:00
    • Venue: Hybrid format of face-to-face venue and online venue
    • Meeting venue: Near Ichigaya station

Deadline for submission of works

Wednesday, January 28, 2026
*This is the current plan and may change in the future.

Examination method

  • We will conduct a preliminary screening of the submitted works by the judges and select the passing teams (assuming about 10 teams).
  • Teams that pass the preliminary screening will have a presentation on the third day to select the final winning work.

4. How to participate

When participating, please be sure to check the Points to consider.

Subscription acceptance period

From 15:00 on Friday, October 24, 2025 to 23:59 on Friday, November 21, 2025

How to apply

  • If you want to participate, please apply from "laws and regulations" x "Digital" Hackathon Participation Application Form .
  • Please note that if it is difficult for all the participants to participate due to the number of applications, Digital Agency may decide the participants after examining the contents of the application form.
    *We will conduct a review from a comprehensive perspective, such as whether the development idea and motivation for participation at the time of application match the purpose of this hackathon. The idea answered at the time of application does not limit the subsequent development content and can be freely changed after the start of this hackathon.
  • Notification of eligibility will be sent to the email address registered on the form by Monday, December 1, 2025.

Points to consider

  • When applying, it is necessary to confirm the Participation Agreement (PDF / 242 kb) and agree on the participation application form.
  • Team representatives must be able to communicate in Japanese.
  • If Digital Agency determines that participation in this Hackathon is not appropriate, such as making a proposal for socially unacceptable activities or services in this Hackathon, future participation will be refused.
  • Applications that are incomplete, that contain false information, or that are otherwise false to Digital Agency will not be considered.
  • We will not respond to inquiries regarding participation applications or the progress and results of screenings of works.
  • If you submit an existing product, such as a tool that has already been commercialized or published, as a development of this hackathon, it may not be subject to review.
  • When utilizing generative AI for development, please also refer to rules for the operational use of generative AI within the government, etc. (Reference: Guidelines for the Procurement and Use of Generative AI for the Evolution and Renovation of Administration).
  • Neither Digital Agency nor the judges guarantee the performances or qualities of the winning ideas.
  • Digital Agency does not authorize, publish, distribute or otherwise make available as an official service any Services completed through this Hackathon.
  • Photographs will be taken during this Hackathon, including the presentations by the participants and the award ceremony, and the video and images may be disclosed by Digital Agency.
  • The outline of the idea and the announced contents may be disclosed by Digital Agency on the website and public relations materials, etc.
  • Participation in this Hackathon is free of charge, but participants will be responsible for any transportation costs required to travel to the venue and any communication costs required for online participation.
  • Digital Agency does not make any financial contributions to this hackathon or to the award.
  • A prototype of the laws and regulations APIs that will be provided at this hackathon has been developed for testing purposes. Please do not reproduce the URL or embed it into the system after the hackathon. Please note that the database is an excerpt from a past snapshot of the existing laws and regulations database used for testing purposes, so we cannot guarantee its coverage. laws and regulations

5. Privacy Policy

6. Use of laws and regulations API Prototype

Laws and regulations Application Programming Interface prototype is a prototype of APIs that extend the functions of "Digital Agency laws and regulations Application Programming Interface Version2 " currently provided by on the e-Gov laws and regulations search engine.
At this Hackathon, we will provide a prototype of laws and regulations APIs and laws and regulations MCP on a trial basis. Specific specifications will be announced to the participants later.

7. Inquiries

If you have any questions, please contact "laws and regulations" × "Digital" Hackathon Contact Form .

8. Related Information

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