Multiplayer Building is here.

Google Docs made documents collaborative. Figma made design collaborative. Now, Party is making building collaborative. Party is the multiplayer workspace where your whole team + agents build together, out in the open.

We’re filling a room with engineers, product leaders, founders, and hackers to work on a single project. Everyone builds together, live. You’ll leave having shipped something alongside a group of builders you just met.

You don't need prior experience with Party, Cursor or Claude Code. Agents do the heavy lifting - you give the direction. If you can describe what should be built or give feedback, you can contribute.

What you'll do:

  • Get onboarded onto Party

  • Join the same live session as everyone else in the room

  • Build, review, contribute to, and ship features to one shared project

  • Enjoy the product you helped build

What to Expect

Schedule is approximate - the build runs as long as people want to keep going.

5:00 – 5:45 PM | Doors, Food & Networking Grab food and a drink, get your laptop set up, meet and greet.

5:45 – 6:00 PM | Welcome & Walkthrough What we're building, how Party works, and how to join the project.

6:00 – 9:00+ | Build Session

Who Should Attend

  • AI-pilled engineers curious what building in the open feels like

  • Product managers and designers who want to be more involved in the build

  • Founders and early startup teams looking to ship faster with better quality

  • Project managers and technical leads

  • Anyone on the Peninsula who'd like to spend the evening building with like-minded individuals

You do not need to be an expert with coding agents. You do need to be up for building something with people you've just met.

What You'll Walk Away With

  • Something real that you helped build - that you’ll have access to after the event

  • The experience of building alongside others, with agents, to create something spectacular

  • Three months of Party Starter, free - which includes $20 in credits, monthly

Important Details

  • Format: In person

  • What to bring: Your laptop

  • Experience level: All levels. Party, Cursor, Claude Code, etc experience not required.

  • Capacity: Limited to 50. Registration is reviewed, so please sign up in advance.

Event Info

🎟️ Registration: RSVP required - capacity is capped at 50

🍽️ Food & Drinks: Provided

🏢 Venue: 810 Hamilton - our event space in downtown Redwood City

📍 Address: 810 Hamilton St, Redwood City, CA 94063

🚗 Parking: Street parking on the surrounding blocks & parking structure on Jefferson St.

🚉 Transit: One block from the Redwood City Caltrain station. Approximately 25 min Caltrain ride from 4th & King.

About Party

Party is the multiplayer workspace where your whole team builds together alongside fleets of agents, out in the open. Agent Flows do the heavy lifting while humans steer. You pick the harness and model for each agent in the Flow - Claude Code, Codex, Cursor, Opencode - and work in the same secure session as the rest of your team. Bring your own keys, or use ours.

Learn more about Party at party.build. Try Party at app.party.build (web, MacOS, iOS, and Android).

About 810 Hamilton

810 Hamilton is our event space in downtown Redwood City - a converted loft in the heart of Redwood City. It's where we host Build Nights, and it's available for other events too. 810hamilton.com

Sponsorship & Partners

Interested in getting involved? We work with partners on demos, speaking slots, and co-hosted nights. Reach out to Julian at [email protected]