#Japan #Tokyo #AI Agent #Leach #JSSST

Leach Takes Center Stage at the 42nd JSSST Conference

In a groundbreaking event, Leach, a company based in Minato, Tokyo, announced that its CEO, Takumi Tominaga, served as a speaker at the tutorial session of the 42nd Japanese Software Science Society (JSSST) conference. The session, held on September 2, 2025, from 1:00 PM to 4:00 PM, focused on the theme, "Building a 'Service to Chat with PDFs' using Next.js, Mastra, Convex, and Stripe."

Overview of the Session

During the tutorial, Tominaga guided participants through various aspects of creating a web service centered on generative AI agents. The session covered a wide array of topics, including:

• - Transcribing PDF documents into Markdown
• - Splitting Markdown into chunks
• - Generating embedded vectors
• - Implementing Retrieval-Augmented Generation (RAG)
• - Designing AI agents
• - Utilizing token-based billing
• - Achieving instant deployment through Continuous Integration and Continuous Deployment (CI/CD)

The session aimed to unveil the swift approach to releasing web services powered by generative AI agents, ultimately enabling enhanced productivity and innovative solutions.

Background of the Tutorial

Despite their expertise in research, students often lack insights into the methodologies for rapidly releasing products built on their findings. Therefore, this tutorial emphasized not adhering strictly to scratch implementations. Instead, by mastering frameworks like Mastra, attendees were taught to navigate seamlessly from design to implementation and deployment. This methodology encourages participants to bring their academic insights into the real world, paving the way for Japan to produce impactful generative AI solutions on a global scale.

Key Highlights from the Session

1. Why Generative AI in Small Businesses?
- Tominaga discussed the automation of mundane documentation tasks through generative AI agents and showcased Leach's SaaS solutions targeting this sector.

2. Overview of the Chat with PDF Service:
- The architecture of the service was explained, detailing the integration of user interface, AI agents, RAG, billing, and CI/CD.

3. Introduction to Mastra:
- Participants were introduced to the functionalities of Mastra, alongside its foundational tools and implementation strategies.

4. Basics of Convex & Stripe:
- An overview of the functions of Convex and Stripe was provided and included guidance on creating billing plans based on token usage.

5. Design and Implementation of the PDF Chat Service:
- Tominaga outlined the database design with Convex and the integration of Next.js, AI agents, Clerk, and Convex with a focus on token-based charging.

6. Deploying the PDF Chat Service:
- The tutorial wrapped up with deployment strategies using Mastra Cloud and Vercel.

Future Aspirations

Tominaga expressed his desire to nurture developers in Japan who will release generative AI agents, highlighting the importance of educating and fostering the rapid development and deployment of AI-driven solutions. His vision is to elevate Japan’s standing in the tech landscape, focusing on leveraging existing frameworks and tools to facilitate immediate releases of innovative products.

About the Japanese Software Science Society

Founded on October 8, 1983, the JSSST (Japanese Software Science Society) is dedicated to advancing research and cultural developments in the field of computer software. With headquarters in Bunkyo, Tokyo, the society organizes academic meetings and publishes various scholarly works. Their official website can be found here

About Leach

Founded by Takumi Tominaga, Leach specializes in generative AI processes and BPO tailored to document management tasks. The company's focus is on creating AI agents that significantly enhance productivity in small and medium-sized enterprises. By utilizing technology deeply rooted in research and innovation, Leach aims to streamline business operations, allowing more time for research and development.

For further inquiries or to explore their services, visit Leach's website.