Spendkit
Spendkit lets AI Agents make payments within limits set by their owners. Users keep funds in their own Payment Wallets, set an onchain spending policy for each Agent, and monitor activity in one dashboard. The current demo runs on Arbitrum Sepolia with Paxos Test USDG.
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Descripción
Before the Buildathon, Spendkit had a Base Sepolia prototype for Agent payments using Coinbase Spend Permissions to enforce spending caps.
During Arbitrum Open House, we built an Arbitrum Sepolia payment flow around a user-controlled Payment Wallet and a Solidity Policy Router. Each Agent can have its own onchain policy with daily and per-transaction limits, optional recipient restrictions, and pause or revocation controls. We added OAuth and MCP Agent connections, payment previews, exact signed authorizations, Paxos Test USDG support, and a dashboard for setup and payment activity.
For payments made through Spendkit, the Payment Wallet submits the transaction and the Router checks the current policy before funds move directly to the recipient. Our demo shows an in-limit payment succeeding and a later request being blocked because it would exceed the daily limit.