AI Agent "Mill" Transforms System Operations' "Invisible Debt" into Assets - Free Trial Reception Begins
MSOL Digital has launched "Mill," an AI agent for system operations that visualizes complex systems and resolves issues like individual dependencies and black box systems. It aims to support legacy transformation by automatically building system knowledge from source code and documents through three core functions: knowledge generation & interview, AI assistant, and document management. A free trial "Entry Plan" is available.
📋 Article Processing Timeline
- 📰 Published: April 8, 2026 at 19:00
- 🔍 Collected: April 8, 2026 at 10:30
- 🤖 AI Analyzed: April 17, 2026 at 18:01 (223h 31m after Collected)

MSOL Digital Inc. (Location: Minato-ku, Tokyo; Representative: Kosei Sakamoto) has begun offering "Mill," an AI agent for system operations that streamlines corporate system operations and visualizes the entire complex system.
Through "Mill," which is now being offered, we will resolve issues such as individual dependency and black-boxing that are hidden in system operation sites, and strongly support "Legacy Transformation (LX)" which aims to refresh and optimize existing systems.
■ Development Background: What is the "Invisible Debt" of System Operations?
Many companies face the following operational challenges in systems that have been in operation for many years or have undergone repeated functional additions:
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Black-boxing: Documentation does not exist or is not up-to-date, making specifications unclear.
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Individual dependency: Operations depend on specific personnel, and system specifications are only known by that person.
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Swelling and complexity: Structures have grown due to functional additions and a proliferation of systems, and operations have reached their limits.
We have defined these challenges as the "invisible debt" of systems.
Starting with a deep understanding of systems using AI, we developed this service as a solution to transform these debts into valuable "assets (knowledge)" through "dialogue between human operators and AI."
■ Three Core Functions Composing "Mill"
"Mill" automatically builds system knowledge through the following three core functions simply by customers uploading source code and existing documents to a dedicated environment.

1. Knowledge Generation & Interview Function
AI not only analyzes code to extract structure and logic, but also conducts interviews with responsible personnel. Through dialogue, it databases business knowledge and background information not obtainable from code alone, converting tacit knowledge into explicit knowledge.
2. AI Assistant Function
An AI that understands the entire system answers questions immediately like an experienced expert. For example, it performs complex impact analysis and identifies test items, such as "If this process is modified, where will it be affected?", dramatically speeding up modifications and troubleshooting.
3. Document Management Function
AI analysis results are automatically constructed as an always up-to-date system knowledge base. In addition to outputting as basic design documents and detailed design documents (PDF download), it can also be referenced as system flow diagrams and CRUD diagrams (data operation lists), solving the problem of document obsolescence.
■ Future Developments (Ver1.5)
Autonomous operation support through monitoring tool integration. The next version will include functions to immediately detect system anomalies and alerts by integrating with major monitoring platforms (Amazon CloudWatch, Zabbix, etc.).
AI will autonomously infer "why it happened" and "where to fix it" by cross-referencing error logs with past modification history.
It will provide solutions to chat tools such as Slack and Teams, and automatically create tickets in ticket management tools.
■ First, AI Analysis on Your Own System. Guidance for "Free Trial"
To help you experience the value of "Mill," we offer an "Entry Plan" that allows you to try AI analysis using your actual system assets.
Eligible Services
Source analysis of approximately 10,000 steps, basic design document/detailed design document output, system visualization (BI)
Cost
Free (¥0)
Implementation Flow
After signing a Non-Disclosure Agreement (NDA), we will securely receive and analyze your source code in a secure environment.
* Paid plans for full-scale introduction (e.g., "Trial" for actual use of the AI agent, "Standard" for individual requirements) are also available.
Please feel free to contact us for details on functions, costs, and infrastructure environment construction methods (construction in your AWS environment or provision of our environment).
[Contact for this matter]
MSOL Digital Inc.
DX Division, Digital Technology Dept.
TEL: 03-6774-7138
Email: digital-lx-info@msoldigi.com
Mill: https://www.msoldigi.com/solution/mill/
■ About MSOL Digital Inc.

MSOL Digital Inc. is a company that pioneers the future for its customers through the introduction of Business Agile® and DX strategy formulation, DX promotion support, data-driven management support, and generative AI introduction support, integrating the digital and management expertise cultivated thus far.
* MSOL Digital Inc. is a group company of Management Solutions Inc., listed on the Tokyo Stock Exchange Prime Market.
Company Name: MSOL Digital Inc.
Head Office Location: Midtown Tower 29F, 9-7-1 Akasaka, Minato-ku, Tokyo 107-6229
Established: January 2024
Representative Director: Kosei Sakamoto
Business Activities: Digital transformation support, DX framework, CXO support framework, agile/data analysis, low-code/no-code development
Website: https://www.msoldigi.com/