Built for Synthesis · Ethereum · Base · Solana
Kartein is the programmable trust layer between AI agents and the Solana blockchain. Every payment is validated, every violation is blocked, every action is auditable.
See it working
Total Spent
$47.50
/ $625 budget
Active Agents
3
connected
Transactions
42
last 24h
Approval Rate
85%
Includes an agent terminal — type natural language commands and watch the policy engine respond.
AI agents make autonomous payments via x402 on Base and Solana. Kartein validates every transaction against programmable policies before settlement via Locus.
Trust is programmable. Per-agent spending limits, recipient whitelists, daily caps, and category restrictions define exactly what each agent can do.
Multiple agents share a managed vault with individual budgets. One agent's limits don't affect another. Cooperative spending, individual accountability.
Agent wallet keys are isolated and never exposed. Policy rules act as access control — agents can only spend within their defined boundaries.
Secure USDC deposit pool with per-agent budget isolation. Funds remain locked until a policy-approved withdrawal clears.
Programmable spending rules enforced on every transaction. Per-agent limits, recipient whitelists, time windows, and category controls.
Intercepts HTTP 402 payment requests before settlement. The gateway between agent intent and on-chain execution.
Real-time anomaly detection on spending patterns. Flags unusual behavior and auto-escalates to human review.
Human oversight with kill switch and full audit trail. Freeze any agent instantly. Review every transaction.