Open Source

Repayd

Safety and insurance layer for AI-agent wallets on Arc: holds suspicious USDC, blocks violations before broadcast, and settles covered claims in the same block.

Repayd
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Overview

An on-chain safety and insurance layer for AI-agent wallets on Arc. Repayd holds suspicious USDC, blocks policy violations before broadcast, and settles covered claims in the same block.

Highlights

  • Proved instruction origin in the TypeScript SDK with a rolling Keccak hash chain, distinguishing owner-signed actions from external attacks.
  • Built the Solidity core with ROUTINE/ELEVATED/VIOLATION classification, EIP-712 verdicts, and double-claim nullifiers.
  • Verified the protocol with 102 Foundry tests and fuzz invariants.

Tech stack

TypeScript/
Solidity/
Foundry/
ethers.js