#Japan #Tokyo #Claude #UTAGE #Fountain

Introduction

On April 4, 2026, Fountain Co., based in Minato, Tokyo, released a groundbreaking API and Model Context Protocol (MCP) for its domestic Marketing Automation (MA) platform, UTAGE. This new feature enhances the ability to integrate with external systems, including AI agents like Claude and Claude Code, enabling automatic creation of landing pages (LP) and sales funnels.

Background: Transforming Marketing with AI

The rapid advancements in generative AI and AI agents have made automating marketing tasks increasingly feasible. Since the introduction of tools such as ChatGPT and Claude, we’ve seen significant improvements in areas like ad copy generation, newsletter content creation, and data analytics efficiency.

As we entered 2026, the explosive rise of open-source personal AI agents like OpenClaw and AI automation tools aimed at non-developers, such as Anthropic’s Cowork, signaled a shift in AI capabilities from mere conversation to execution. Concepts like ‘vibe coding’—building applications or pages by providing instructions without coding—have gained traction, paving the way for self-sufficient AI agents.

However, in the marketing sector, the execution of tasks such as creating landing pages, setting up email marketing sequences, and developing seminar funnels still largely relied on manual processes. Many MA tools assumed GUI-based no-code interactions, lacking the necessary APIs to allow programmatic control by AI agents.

UTAGE’s Innovative Approach

Serving more than 17,000 companies and over a million users, UTAGE is a pioneering all-in-one MA solution in Japan, facilitating sales funnel construction, email marketing, LINE distribution, payment processing, membership site management, and customer management. Its reputation for enhancing operational efficiency and systematic customer acquisition strategies in online businesses—particularly in areas like online courses, content sales, and seminar marketing—has been stellar.

The release of the API and MCP signifies a transformation for UTAGE, evolving it from a traditional no-code tool into a comprehensive marketing infrastructure operable by AI agents.

Understanding MCP: A Game Changer

MCP, proposed by Anthropic, is an open protocol designed to connect AI models with external tools. Traditionally, AI’s interaction with SaaS or web services necessitated separate integration efforts for each service. MCP addresses this challenge, with major tech giants like Google, Microsoft, and Salesforce developing MCP-compatible tools, establishing it as a standard alongside Google’s Agent-to-Agent (A2A) protocol. Gartner recognized it as a key technology trend for 2026, highlighting its role in realizing multi-agent systems.

With the recent implementation of MCP server functionalities, UTAGE can now seamlessly connect with generative AI tools like Claude and Claude Code, allowing for marketing initiatives to be executed simply by providing natural language instructions.

Comprehensive API Functionality

For example, giving a command like, “Create a landing page for next month’s seminar, targeting small business owners, with a signup form included” will prompt AI to automatically build the funnel, lay out the page, and configure textual and form elements—tasks previously done manually one step at a time.

Latest Features

The current release focuses on funnel management via API and MCP, providing capabilities such as:

• - Creation and management of funnels (sales pages, landing pages)
• - Page management (LP creation, updates, deletions)
• - Content management (placing sections, columns, various content types)
• - Media management (searching and managing uploaded files)
• - Distribution account and scenario management (creating accounts for email marketing and LINE distribution)

Use Cases

Case 1: Automating Seminar Funnel Creation
Just instructing Claude or Claude Code to “Make a landing page for seminar marketing” will enable the AI agent to autonomously handle the entire process from funnel creation to content placement—no coding knowledge required.

Case 2: Building Sales Funnels for Online Courses
Give instructions like, “Create a sales funnel for an online course, with an LP, auto-webinar viewing page, signup page, and thank you page” and watch AI effortlessly structure a marketing funnel optimized for content sales.

Case 3: Bulk Modifications of Existing Funnels
Commands like “Replace the header image on all LPs with the new logo” can now be executed in bulk through API, a task that previously took considerable time.

Case 4: Rapid Deployment for Influencer Marketing
For campaigns involving influencers, the need for swift creation of landing pages, signup forms, and thank-you pages is critical. Simply ask the AI agent to “Create an LP for the limited seminar with [Influencer’s Name]” for immediate funnel construction.

Case 5: Custom AI Workflows via API
Utilizing the API enables linking UTAGE with CRM, ad management, reservation systems, and e-commerce sites to create a customized AI workflow, allowing seamless operations for various marketing needs.

Comparing Old vs. New Marketing Operations

Traditional Funnel Creation Process:

1. Log into the management system
2. Choose a template
3. Position elements using a page builder
4. Input text, adjust designs
5. Set publication settings

New Process using UTAGE API/MCP:

1. Instruct AI to “Create a landing page for [Specific Purpose]”
2. AI automatically constructs the funnel and page, placing all content accordingly
3. Confirm and publish

This evolution allows marketers to complete tasks that previously took several hours through simple dialogue with AI, fostering a focus on strategy rather than technicalities.

Future Developments

Further API/MCP functionalities are planned, including:

• - Automated email marketing setups
• - LINE distribution automation
• - Membership site systems
• - Auto-webinar configurations
• - Payment integrations and product management
• - Lead management and customer data analysis

These enhancements aim to create a fully automated AI workflow that covers every aspect from planning to execution, including performance measurement in a multi-agent environment.

As part of these innovations, UTAGE will cultivate an ecosystem allowing external developers and partners to build applications powered by UTAGE's API, with ambitions of collaborating with open-source development communities to expand its marketing tool ecosystem.

About UTAGE

UTAGE is a comprehensive MA platform that provides funnel creation, LP crafting, email and LINE marketing, payment processing, membership systems, and customer management—all without coding. The platform caters to a range of users from sole proprietors to larger corporations. With the recent API and MCP implementations, UTAGE strives to deliver its value as an AI SaaS solution, well-suited for online business automation and efficiency in customer acquisition and management.