Visual Diagram Editor for AI Logic
Prototyping a Custom Diagramming Tool with Real-Time Server Control
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Visual Diagram Editor for AI Logic
Prototyping a Custom Diagramming Tool with Real-Time Server Control
![[Fuj 3] Image for the Challenge](http://images.ctfassets.net/xooissnm36jt/qvnrcMUIQ8ICxOiAVbohd/56953d239e62a95c5f18ddd9617bdbdc/Group_54__20_.svg)
The Challenge
Fujitsu needed a lightweight, purpose-built diagram editor to help design decision logic in its AI Platform. Existing general-purpose tools were too complex, including features the client didn’t need, making them harder to maintain or customize. The goal was to build a streamlined, web-based design tool tailored for AI development—allowing users to draw logic diagrams using custom nodes, edges, and real-time interactions.
To explore this, Fujitsu turned to Topcoder to rapidly prototype and enhance a modular diagram editor, including support for server-side push control and usability-focused enhancements.
The Solution
Topcoder launched a series of design and development challenges to build the tool from the ground up. Within the initial challenge, members created a fully functional web-based diagram editor supporting JSON-based save/load, auto-layout, and customizable node/edge properties. Subsequent challenges introduced real-time server push capabilities using WebSockets and further UI/UX improvements, such as self-transition shortcuts, metadata handling, and enhanced styling options.
This modular challenge-based approach helped Fujitsu validate key technical concepts quickly and iteratively evolve the prototype toward production readiness.
Challenges we ran:
• Fujitsu - Prototype of Web-based visual editor for specific purpose diagrams
• Fujitsu - Web-based Visual Diagram Editor Enhancements
• Fujitsu - Web-based Visual Diagram Editor - Server Side Control
• Fujitsu - Web-based Visual Diagram Editor Self-Transition Enhancements
4
Challenges
129
Participants
17
Submissions
The Impact
Through Topcoder’s crowdsourcing model, Fujitsu received a fully working editor prototype aligned with its specific needs. The challenge series:
Enabled fast validation of real-time WebSocket-based control
Delivered a simplified, maintainable codebase
Resulted in a usable, scalable design tool tailored for AI logic workflows
The successful prototype laid the groundwork for future AI service design solutions within Fujitsu’s broader platform.
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