Leemon Adds UCP Support to leemon.jp, a First in Japan's Printing Industry: AI Agents Can Now Take Posters from Design to Order
Issuer: Leemon Inc. (礼沐株式会社)
Leemon Inc. (礼沐株式会社, service name: Leemon), headquartered in Osaka, Japan, today added support for UCP (Universal Commerce Protocol) on Leemon Store ( leemon.jp ), its online service for designing and printing shop posters. UCP is an open standard for AI agents to shop, announced by Google and Shopify in January 2026. It is the first service in Japan's printing industry where AI agents can use UCP to go from creating a poster design to placing a print order.¹
What UCP support makes possible
- Find products and order: AI agents that support UCP can look up leemon.jp's products and prices and handle the order on the customer's behalf, without operating the website's pages.
- Create poster designs: Leemon has added its own feature on top of UCP so AI agents can create poster designs from a customer's request. Designs can be fine-tuned and saved to the customer's Leemon account.
- Customers pay themselves: The customer gives final approval and pays on leemon.jp.
It is intended for AI agents that research and shop on a user's behalf, such as Meta's Muse.
How it works
- The customer allows the AI agent to connect to their Leemon account.
- Through UCP, the AI agent looks up products or creates a poster design.
- Designs the customer likes are saved to their Leemon account.
- The customer reviews the order and pays on leemon.jp. The order is confirmed once payment is made.
- For orders made with an AI design, a professional designer finishes the artwork for printing (paid option). Printing starts after the customer approves the finished design, and up to two revisions are included.
Launch details
- Standard: UCP (Universal Commerce Protocol)
- What: Product search and ordering (standard UCP features); poster design (Leemon's own feature)
- Available at: leemon.jp
- Launch date: October 24, 2026
- Products: Posters and backlit posters
Company information and media contact
- Company: Leemon Inc. (礼沐株式会社)
- Address: 2F, 2-14-10 Kobayashi Nishi, Taisho-ku, Osaka 551-0013, Japan
- Websites: leemon.jp / leemon.co.jp
- Email: info@leemon.co.jp
- Phone: +81-6-6626-9736 (weekdays 10:00–18:00 JST)
¹ As of October 24, 2026, based on Leemon's own research. We reviewed the UCP support and public materials of major online print services in Japan and found no other service that lets AI agents create designs through UCP.
Company and product names mentioned are trademarks or registered trademarks of their respective owners.