Emmanuel Osadebe@ruru_arcade

Readback is a voice agent that stops blind signing. Bybit lost $1.46B because its signers approved a transaction their screens misrepresented. Readback fixes this the way pilots do: read it back. You press Sign and say what you think you are signing. The AssemblyAI Voice Agent API records your intent without ever seeing the transaction. A notary decodes the real calldata, unpacks Safe batches, checks every address on Base, and compares the two with 27 plain rules. The agent then speaks the verdict word for word. On a Safe, a match produces a signed attestation, and ReadbackGuard, our Safe guard contract, refuses any transaction without one. On Base Sepolia, a Bybit-style attack reverted on a guarded Safe and took over an unguarded one. 15/15 intents understood.

🌎 Online Hackathon | 💻 Month-long challenge | Dates: Sep 1–30, 2026 | 🏆 $10,000 Prize Pool ($5k cash + $5k in AAI credits) A month-long online challenge run by lablab.ai together with AssemblyAI, the Voice AI infrastructure company for builders. Every participant builds on AssemblyAI. You can join at any point — registration stays open for the whole build window, so you can start on day one or pick the project up halfway through and still submit. 🌍 Fully online hackathon. Join and build from anywhere in the world.