Over 100 developers. Three weeks. One API. These are the four who stood out.

When we opened the Napster Omniagent API to developers, we weren't sure exactly what would come back. We knew the API was capable. What we didn't know was how fast developers would push it somewhere unexpected.

Now we do.

More than 100 developers answered the call for Napster’s first-ever hackathon. Three weeks of building later, we had 10 finalists doing things with voice and video agents that ranged from genuinely useful to absolutely wild. Agents running security operations. Agents calling little-league baseball. Agents debating each other in real time while a live audience throws chaos at them.

Today we’re sharing the winners for each of the four categories, and what they built. Let’s dive in.

1. Best Agent in Production: Atlas

Atlas is a multimodal B2B support agent built around a single idea that sounds obvious once you hear it: A customer should never have to repeat themselves.

Most support experiences break at the handoff. You explain your issue to a bot, get escalated, and explain it again. Atlas doesn't work that way. It carries one customer identity across web, video, voice, and a live phone call. Tier-1 Atlas handles grounded, factual questions and, when it's time to bring in a specialist, Atlas performs the hands off with the same context, the same memory, and no starting over.

The handoff problem is one of the most friction-filled moments in any customer relationship and with Atlas it’s an effortless transition. 

2. Most Creative Use of Voice + Video: Buck

Buck is an AI little-league announcer and scorekeeper, and it's exactly as fun as it sounds, plus technically more interesting than it looks.

Here's how it works: You narrate the play in your own words. Buck takes that description and calls it like a pro broadcaster while simultaneously keeping the official scorebook in the background. Two completely different outputs from one natural-language input running in real time.

The Most Creative Use Case category was competitive. Buck’s “job” is specific, joyful, and a little absurd. But the underlying challenge (turning unstructured natural language into simultaneous structured data and expressive audio) is real, and Buck nails it.

3. Best Enterprise Application: Alex

Alex is built for the highest-stakes 10 minutes in a security operations center: The first moments after an incident is reported, when everything is moving fast and the cost of a wrong call is high.

Alex is built on a senior-analyst persona grounded in real federal incident-response playbooks from CISA. He asks precise clarifying questions, classifies severity from P1 through P4, and builds a full containment-to-recovery plan. He logs the ticket with an SLA deadline and offers escalation to a human analyst when the situation calls for it.

The design principle that makes it work is that a human stays in control of every irreversible decision. Alex doesn't act; he thinks, classifies, and organizes. It makes the first 10 minutes calm so the humans running the response can make better calls.

4. Wild Card: A.R.E.N.A.

Imagine Twitch Plays Pokémon, but the players are AI agents arguing with each other, and the audience controls the rules.

A.R.E.N.A. runs three distinct AI personalities: Rico, Helena, and Darius. They debate hot-button topics continuously, with no human moderator. A live audience watches, votes, and spends credits on "chaos rules” that rewrite the agents' instructions in real time.

"Speak only in questions." 

"Argue the opposite side." 

The debate changes shape based on what the audience decides to throw at it.

The technical execution is fearless. WebSocket and WebRTC run on the same agents simultaneously. There's one authoritative audio feed, a shared transcript, and per-viewer lip-synced video avatars. It works. Watching it is genuinely strange in a fantastic way.

Congratulations to Atlas, Buck, Alex, and A.R.E.N.A., and to all 10 finalists who made this harder to judge than we expected. Each winner will collect a prize pack worth nearly $2,000 and includes a Microsoft Surface laptop

Want to be part of the next one? Watch for the next hackathon at napster.com/developer.