MCD3 Establishes External Service Integration Platform to Advance Digital Transformation in Construction Sites

MCD3 Co., Ltd. (Shibuya-ku, Tokyo; President and CEO: Masao Iida) has established a new service platform to seamlessly integrate its construction industry cloud service 'Kensetsu Site Series' and the worker-focused smartphone app 'My Green Site' with external services. The company has signed integration agreements, including technical verification, with three companies. MCD3 plans to proceed with full-scale deployment of integrated services sequentially after conducting technical verification and trials with each partner.

Challenges and Background

As digital transformation (DX) in construction sites is increasingly demanded across the industry, the adoption of IT tools by skilled workers from subcontracting companies—especially foremen (※1)—has become essential. However, the following challenges have been hindering DX progress at construction sites:

Challenges on the General Contractor Side

For newly arriving workers, general contractors must issue individual accounts and send project invitations for each IT tool used, creating a significant administrative and operational burden.

Challenges on the Skilled Worker (Foreman) Side

When multiple tools are used on-site, workers must register and manage different IDs and passwords for each tool. Small issues such as 'unable to log in' or 'don't know how to use it' accumulate, leading to resistance toward IT tools. For skilled workers who are already busy with on-site tasks, these daily hurdles have become major barriers to DX adoption.

Overview of the External Service Integration Platform

To address these challenges, MCD3 has built an external service integration platform centered on My Green Site. Leveraging the Kensetsu Site Series' database of over 2.8 million skilled workers, the platform automatically issues a unique user ID to each worker, enabling seamless integration with external IT services.

Key Features and Benefits

Seamless Site Access Workers can automatically join a project within the partner service simply by navigating from My Green Site to the integrated service. Manual invitations by general contractor staff are no longer required (patent pending).

Single Sign-On (SSO) Login Users can log in to partner services via Single Sign-On (SSO) (※2) using their Kensetsu Site Series user ID, eliminating the need to manage separate IDs and passwords for each service.

Automated ID Issuance Using Green Site Data By utilizing data from over 2.8 million skilled workers registered in Green Site—one of the services in the Kensetsu Site Series lineup that handles labor safety documentation—MCD3 automatically issues user IDs within My Green Site. Workers can immediately start using integrated services without the hassle of creating new accounts.

These features reduce operational burdens for both general contractor staff and skilled workers (foremen), supporting the advancement of DX at construction sites.

Important Notes

The integration does not guarantee support for all functions within each partner service.

Integration Partners and Future Schedule

In building this platform, MCD3 has signed integration agreements, including technical verification, with the following three companies. The company is also preparing integration agreements with additional partners.

Company Name

Service Name

SORABITO Inc.

GENBAx Inspection

MetaMoJi Corporation

eYACHO for Business

Diamond KENKI Corporation

ConPath-D

*Company names are listed in alphabetical order. *For service overviews and details, please refer to each provider's official website.

Future Schedule

MCD3 will sequentially conduct technical verification and trials with the three contracted companies.

Based on the results of these verification and trial phases, full-scale deployment of integrated services is planned from fiscal 2026 onward.

Specific schedules and launch dates with each company will be announced once finalized.

*This announcement does not guarantee the launch of service integration with any partner at this time.

Future Outlook

MCD3 believes that to achieve DX at construction sites, it is essential not only for general contractors but also to create an environment where every skilled worker from subcontracting companies can routinely use IT tools.

By establishing My Green Site as the identity foundation for skilled workers and expanding integration with leading industry services, MCD3 aims to contribute to the overall digital transformation of the construction industry. The company will continue enhancing and improving its services based on feedback and requests from customers and partner companies.

※1: Foreman—An on-site supervisor directly responsible for directing and overseeing workers at construction sites. Appointed by the employer in accordance with the Industrial Safety and Health Act.

※2: Single Sign-On (SSO)—An authentication mechanism that allows access to multiple different services or systems with a single login operation.

Labor Safety Documentation Service 'Green Site'

A service within the 'Kensetsu Site Series' that enables the creation, submission, and confirmation of labor safety documents (Green Files) online for the construction industry. It contributes to streamlining and paperless operations for documentation tasks for both general contractors and subcontractors, from pre-construction to post-construction phases.

https://www.kensetsu-site.com/series/greensite/

Worker-Focused Smartphone App 'My Green Site'

A smartphone app for skilled workers registered in Green Site. It seamlessly integrates with Green Site's data on construction organization, worker rosters, and entry/exit records, contributing to the efficiency and advancement of on-site construction operations and enhancing worker engagement at construction sites.

https://www.kensetsu-site.com/series/my_greensite/

Company Overview

MCD3 was established in July 2025 through the merger of Industry One Inc., MC Digital Co., Ltd., and MC Data Plus Co., Ltd. Under the mission of 'standing alongside industries and continuously addressing societal challenges,' the company combines the strengths of design, digital, and data from the three merged entities to build an integrated operating model—from business ideation using AI and digital technologies to service delivery—with the goal of maximizing customer value.

Company Name: MCD3 Co., Ltd.

Established: April 21, 2015

Representative: President and CEO Masao Iida

Business Overview: Planning, development, and provision of services and solutions leveraging AI and digital technologies

Offices: Head Office / Digital Product Company

- 11F, Ebisu First Square, 1-18-14 Ebisu, Shibuya-ku, Tokyo

AIX Company Kyobashi Office

- 8F, WORK VILLA KYOBASHI, 1-13-1 Kyobashi, Chuo-ku, Tokyo

AIX Company Hibiya Office

- 11F, Hibiya Mitsui Tower, 1-1-2 Yurakucho, Chiyoda-ku, Tokyo

URL: https://www.mcd3.co.jp/

* 'Kensetsu Site Series' and 'Green Site' are trademarks of MCD