Hacker News

Open Sourcing our Startup – AI-powered avatars (UE 5.2)

Hacker News - Fri, 04/25/2025 - 11:19am

Hi HN

TL;DR: Had to shut down our startup SPAR - Open Sourcing the code https://github.com/spar-app/spar-services

In 2024, we developed an AI agent infrastructure to support realistic, personality-driven AI avatars in real-time. The business use case was to provide a new training (sparring) and onboarding tool for companies. In particular, for companies that need to train customer-facing employees (ex, high-end retail)

To achieve the above, we were orchestrating three servers: 1. The first to run a Metahuman on Unreal Engine (5.2); 2. The second to run a custom finetuned open-sourced LLM; 3. The third to handle all the rest, connecting to the above two servers and streaming (WebRTC) on the client's browser, while coordinating with external APIs (Text-to-Speech and Speech-to-Text, etc.).

Key features: * Real-time interactions with distinct avatar personalities. * Fine-tuning toolkit for customizing and refining LLM-generated dialogues. * Structured feedback system that links actionable guidance directly to conversation points.

The future will use AI and immersive experiences to practice soft skills. We will not be building this future, but if you are, feel free to use our work to accelerate yours

Comments URL: https://news.ycombinator.com/item?id=43794505

Points: 2

# Comments: 0

Categories: Hacker News

Show HN: KRDS – Korea Government Design System in React and MUI

Hacker News - Fri, 04/25/2025 - 10:32am

I built an implementation of the Korea Design System (krds.go.kr) using React and MUI.

- Storybook: https://krds.gracefullight.dev - NPM: https://www.npmjs.com/package/@gracefullight/krds - GitHub: https://github.com/gracefullight/krds - Figma: https://www.figma.com/community/file/1452915208095182951

To support developers working on public sector UIs, or anyone exploring frontend architecture and design systems in real-world projects.

Current limitations:

- Icons are from @mui/icons-material for now - Design tokens are static and will be refactored to improve developer experience.

Feedback & Contributions:

- Open to evolving this further with community input. - PRs and issues are always welcome, and I'd consider moving it to an organization if there's enough interest.

Comments URL: https://news.ycombinator.com/item?id=43793992

Points: 1

# Comments: 0

Categories: Hacker News

Ask HN: Any good plugins/apps to generate fake traffic history?

Hacker News - Fri, 04/25/2025 - 10:25am

The goal is to mess up all the tracking advertisement algorithms. Noiszy used to exist but got banned,

Comments URL: https://news.ycombinator.com/item?id=43793912

Points: 1

# Comments: 0

Categories: Hacker News

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