Voice banking for the 1.7 billion adults without a bank account.
TalkTuahBank is a multi-agent conversational AI that runs over a regular phone call — no internet, no smartphone, no banking app. Built in 24 hours and crowned overall champion at HackUTD 2024 across more than 1,100 hackers.
Two minutes of the agent on a real call.
A live phone call routed through Retell AI into the multi-agent FastAPI server. Caller verifies their identity, transfers funds, applies for a loan, and the operator console updates in real time.
A 24-hour project that took the right shortcuts.
Three production-quality decisions stacked together and held to a phone-call interface. Each card links to the system design page.
Telephony, not chat.
Inbound PSTN calls land in Retell AI, which streams transcript chunks over a bidirectional WebSocket to the FastAPI server.
A swarm of focused agents.
Triage, Accounts, Payments, and Applications agents — each with their own prompt and tool surface — coordinated via OpenAI Swarm handoff functions.
Tamper-evident artifacts.
Loan and credit-card application PDFs are rendered server-side with LaTeX and pinned to IPFS through Pinata. The CID flows through to the operator console.
HackUTD 2024 · Ripple Effect
Overall 1st Place · Goldman Sachs Track Winner
Nov 16 – 17, 2024
ECSW · UT Dallas
1,100+
$120,810
Three engineers, one weekend.
Three friends who showed up at ECSW with a hunch about voice and a list of bank ledger ideas, and walked out with the overall trophy.
