
Champion, Sea × OpenAI Regional Codex Hackathon Taiwan
TurnDeal — E-commerce Agent-to-Agent Negotiation
A marketplace negotiation layer where buyer and seller agents form personalized, backend-validated offers before the shopper makes the final choice.
- Designed a multi-agent pipeline spanning request structuring, discovery, parallel negotiation, offer validation, ranking, and checkout confirmation.
- Let multiple seller agents negotiate with buyer branches in parallel; synchronized rounds share only anonymized, backend-validated market terms.
- Let sellers configure 22 commercial constraints, then used offer validation to ensure every final offer stays within those boundaries.
- Built a responsive React interface that supports the same shopping flow across desktop and mobile devices.



