Crypto has only ever sold more.
More keys. More approvals. More permissions. Every wallet is all-or-nothing. Hold the keys yourself, or hand them over completely. One bad signature, one compromised bot, one prompt-injected agent can take everything.
The next wave is the opposite: not less capability, less blast radius. You grant the power to act and withhold the power to drain. The agent trades; it cannot run. The contractor pays; it cannot empty the account.
A key with a leash.
Fuin issues scoped keys from your wallet to anyone: an AI agent, a teammate, your kid. Each key carries your rules: how much, how often, where to, for how long. Spend freely within them. Crossing them is impossible.
- Daily cap
- 20 SOL
- Per-tx cap
- 2 SOL
- Allowed programs
- Jupiter, Meteora
- Active window
- 06:00 / 22:00 UTC
- Expires
- 2026-06-04
- Holder
- 7yQq…3xKr
E6Gk…AoSiy.Enforced on-chain, not on trust.
Hard caps
Per-transaction and rolling limits the key can never exceed.
Allow-lists
Funds move only to the destinations and programs you approve.
Instant revoke
Kill any key on-chain, in one click, forever.
Provable
Every action is checked by the program before it settles.
One primitive. Every delegation.
AI agents that touch real money. Teams paying contractors and bots. Families giving a kid their first wallet. Anyone who ever wanted to delegate money without surrendering it.
Stop choosing between control and delegation.
Give an agent the keys to act. Never the keys to everything.