great idea here - (1) The problem: conversations are where work actually happens, and they evaporate the moment they end. Relevnt closes the loop. Clip on a mic pendant: a prep brief before the meeting, live nudges during, a speaker-labeled transcript, follow-up draft, and a playful courtroom verdict after. Everything lands in a team knowledgebase you chat with.
Our team won Best Use Case of Exa AI at SuperAI NEXT 2026. 36 hours at Marina Bay Sands, one wearable second brain for real conversations. The build:
(1) The problem: conversations are where work actually happens, and they evaporate the moment they end. Relevnt closes the loop. Clip on a mic pendant: a prep brief before the meeting, live nudges during, a speaker-labeled transcript, follow-up draft, and a playful courtroom verdict after. Everything lands in a team knowledgebase you chat with.
(2) The Exa part that won the prize: a Scout agent researches the person you are about to meet using Exa people search and content retrieval, disambiguates similar names, then a Briefer agent compresses the dossier into a one page brief plus a goal checklist. After the call, the pipeline runs Exa again to enrich every person extracted from the transcript. Walk in prepared, walk out with structured memory.
(3) The pipeline: a DJI Mic Mini inside a 3D printed pendant, Amazon Transcribe streaming over a WebSocket, a Live Copilot watching the rolling transcript, then a batch pass with speaker labels, summary, topics, and follow-up. RAG runs on Titan embeddings Nova generation with a grounding gate that drops any claim it cannot cite.
(4) Four people, four lanes: one ran the entire AWS backend, CDK, Lambdas, DynamoDB, end to end. Two ran the deck and the demo. Design and frontend made up the last lane, with Claude Code carrying most of the architecture. First hackathon shipped as a team instead of solo, and trust turned out to be the real velocity unlock.
(5) Underrated discovery: the Exa team is cracked. Some of the brightest, highest-energy people at the venue, helping teams debug like it was their own submission. And the API matched the people: search and content retrieval just worked for 36 straight hours.
(6) Most teams lose the hackathon in the last three minutes, not the first 33 hours. Judges experience a demo, not your commit history. Build less, rehearse more.
(7) A rule written down for my future self, for every team build: never share AI output you have not read and verified yourself. Unread AI output is spam with extra steps.
Repo and architecture in the reply.