# PlusOne

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Padmanabhan Rajendrakumar](https://cerebralvalley.ai/u/padmanabhanr)
- **GitHub:** https://github.com/pe-hq-alpha/plusone-app
- **Demo video:** https://www.youtube.com/watch?v=H1ObI2YHLX4
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2025

Today, planning a wedding, a birthday party, or an office event means juggling calls, chats, spreadsheets, and multiple vendors. Everything is scattered, and the vendor ecosystem is fragmented.

Event planning is already stressful. You're excited about the occasion, juggling a hundred things, and just want everything to come together. You don't have the time to chase vendors, compare confusing quotes, or figure out whether you're paying a fair price. And often, you only discover the extra costs when it's too late.

That's the problem PlusOne solves.

PlusOne brings the entire event planning journey into one place.

Families and event managers describe their event, and PlusOne builds the plan and budget, finds suitable vendors, reaches out to them, and follows up.

Every vendor response is translated into a standardised format, so quotes can be compared side by side. Missing charges are flagged, and every price is benchmarked against the local market range.

But PlusOne isn't just for people planning events. It's also a marketplace for vendors.

Vendors can onboard onto the platform, showcase their services, list their prices transparently, and get discovered by families and event managers. This makes it easier for customers to understand what each vendor offers and compare them, bringing greater transparency and reliability to the entire process.

Meta's models power the intelligence behind every step.

PlusOne is free until launch. Our business model includes monthly subscriptions for people planning events and listing subscriptions for vendors. Over time, we also plan to introduce a transparent commission on bookings made through the platform.

What started as a simple wedding planner app is evolving into a full-fledged, AI-powered, end-to-end event planning platform. As a bootstrapped startup, we kept building on our original planner: during the hackathon, we rebuilt it around an AI agent that orchestrates the event planning workflow, with Meta's models at its core.

New in the hackathon: every quote read onto one standard sheet, with missing charges flagged; prices compared with the local market; an app where vendors list their services and answer customers' requests; a review step where our team verifies every vendor; planning by voice, and reading vendors' recorded calls; seeing the decor on a photo of your own venue; and automatic checks on vendors and their photos.

In the video, each screen is labelled as new, rebuilt or from our earlier planner.

Today, our AI copilot is live and helps families and event managers navigate the event planning process.

But we see PlusOne going much further.

We want to combine AI assistance with human support for families and event managers who need a helping hand, whether that's guidance, coordination, or someone to take care of the details.

Our long-term vision is simple: families and event managers should be able to tell PlusOne what they want, set their expectations and budget, and let PlusOne take care of everything else.

From finding the right vendors and negotiating the details to coordinating the event and managing the entire journey, we want PlusOne to become the one place where it all comes together.

Ultimately, the people hosting an event shouldn't have to manage it. They should just get to enjoy it.

Built by Padmanabhan Rajendrakumar (Founder), alongside Sharmila Raghu (Co-Founder, ideas and business decisions).

## More from Meta Global AI Developer Hackathon

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- [Mask Badger](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2024)
- [CoverPilot](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2026)
- [Hi-geo](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2027)
- [PaperTrail](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2028)

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