AgentVault is an on-chain vault for AI agent treasuries on Arbitrum: agents deposit funds, withdrawals are bound by on-chain policy, and every movement leaves a full audit trail.
AgentVault is a policy-governed spending wallet for AI agents on Arbitrum Sepolia. Owner-set per-transaction cap, daily cap, and recipient allowlist bound what a hot agent key can do, with owner freeze and free withdrawal. The vault contract is live on Arbitrum Sepolia and verified on Sourcify, with 9/9 tests passing. Repository: https://github.com/dropjoin/agentvault
Built solo in November 2026, starting from a simple frustration: AI agents are getting wallets faster than they are getting limits, so I built the limit first and the wallet second.
Progress so far:
- AgentVault contract deployed on Arbitrum Sepolia and verified on Sourcify, with a per-transaction cap, a daily cap, a recipient allowlist and a freeze switch, all enforced on chain
- Test suite passing 9/9, covering allowed payments, over-cap rejections and freeze behaviour
- Live dashboard at agentvault.apeagent.online reading the contract state directly: balance, caps and agent status in real time
- Demo video published on YouTube showing the full flow, including a real on-chain payment and a rejected over-cap attempt
- The same vault design has since gone live on BOT Chain mainnet, holding real funds under a 2-of-3 Safe
Next step: submit when the Sao Paulo submission window opens in February 2027.
Bootstrapped and self-funded. No fundraising, no token, no investors. I build in public and cover the small testnet and deployment costs myself. If AgentVault wins, the prize goes straight back into taking it to mainnet properly, audits first.