DeC Inc.

DeC Inc. is a Tokyo-based AI automation specialist helping small and medium-sized Japanese enterprises cut repetitive tasks by 85–95% through custom AI agents built on Claude. It provides hands-on implementation with Japanese language and cultural expertise and a transparent 4–6 week deployment.

What they do

• Accounting AI automation
• Construction AI (estimates, site reporting, compliance)
• Medical clinic AI (receipts, intake, appointments)
• Logistics and warehouse AI (dispatch, inventory, OCR)
• Tourism and hospitality AI (multilingual support, forecasting)

How they work

DeC serves accounting, construction, medical, restaurants, logistics and tourism (13 industries), with outcomes like tax accountants cutting 100 hours/month to under 10. Built on Claude Code, fixed-price with no lock-in. Headquartered in Shibuya, Tokyo, Japan. (Founded 2024.)