TheiaCon 2025: Beyond Coding - The Ultimate AI-Native IDE Demo with Theia AI

We’re excited to share another highlight from TheiaCon 2025: a comprehensive live demonstration of what’s possible with Theia AI and the AI-native Theia IDE. One year after its initial release, this demo pushes the boundaries of AI-based coding, showing how openness, flexibility, and customization transform AI in the IDE from a black box into a canvas for innovation.

Beyond Coding: The Ultimate AI-Native IDE Demo

Imagine an IDE where you don’t just use AI—you shape it. Every interaction, agent, and workflow can be customized, orchestrated, and extended to fit your exact way of working. This TheiaCon 2025 session delivers an end-to-end live demonstration that showcases the latest Theia AI capabilities and proves why open, extensible AI tooling matters.

What You’ll See in This Demo

The demonstration covers the full spectrum of AI-native development capabilities:

• Code Generation with Coder: Watch the Coder agent generate a complete application from a single prompt, with both agent mode (autonomous file writing and iteration) and edit mode (suggested changes for review)
• Natural Language Terminal Commands: See how developers can use natural language to execute terminal commands without memorizing complex syntax
• Inline Chat Integration: Discover how inline prompts provide contextual awareness for more precise code modifications
• Corporate Identity Adaptation: Learn how to extract styling information from an image and teach your coding agent to remember project-specific guidelines
• Automated Testing with App Tester: Watch the App Tester agent autonomously test applications using Playwright MCP, identifying bugs through actual browser interaction
• Custom Agent Creation: See how to create a new bug reporter agent on the fly and integrate it with GitHub—all within minutes

The Power of Customization

One of the most important aspects of this demo is how the Theia IDE exposes the full flexibility of the Theia AI framework to end users. Software developers can:

• Create new agents with custom prompts and capabilities
• Adapt existing agent behaviors by modifying their prompts
• Connect agents to external services via MCP (Model Context Protocol)
• Configure which LLM each agent uses
• Build automated workflows through agent-to-agent delegation

This level of customization enables developers to innovate and automate their own workflows on the fly—something closed systems simply cannot offer.

Learn More

For more demonstrations of Theia AI capabilities, check out the EclipseSource YouTube channel where you’ll find additional videos showcasing what’s possible with this technology.

For more information about the Theia IDE and details on upcoming events, visit theia-ide.org.

If you want to maximize your team’s effectiveness with AI coding tools, check out our AI Coding Training for Teams.

Building AI-Powered Tools with Theia

If you are interested in building custom AI-powered IDEs, tools, or extending the AI capabilities for your specific domain, EclipseSource provides consulting and implementation services. We specifically specialize in AI-powered tools and support for popular platforms like Eclipse Theia and VS Code.

Additionally, we offer consulting and support for hosting web-based tools in the cloud.

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