Device shardEncrypted in the local operating-system keystore.
DOCUMENTATION
Build with the security model in view.
Technical reference for Avyro threshold custody, smart accounts, recovery, privacy infrastructure, and developer tooling.
avyro.ts
import { AvyroWallet } from
"@avyro/protocol-sdk";
const wallet = await AvyroWallet.connect();
await wallet.transfer({ asset: "USDG" });Avyro Protocol
Avyro is a self-custodial wallet and open developer toolkit designed around distributed signing. Funds remain controlled by a threshold smart account, while day-to-day payments can still feel like a normal application.
Non-custodial2-of-3 thresholdERC-4337Robinhood ChainOpen TypeScript SDK
Three independent authorization paths.
The core model separates signing authority so a stolen device, a compromised service, or a lost recovery factor cannot independently authorize funds.
Policy co-signerApplies policy checks before contributing the second signature share.
Passkey recoveryHardware-backed recovery factor for access rotation and recovery.
How a transaction moves.
Build intent
The client prepares an unsigned ERC-4337 UserOperation.
Apply policy
Limits, velocity, destination, and transaction intent are checked.
Form quorum
Two independent signature shares satisfy the 2-of-3 authorization rule.
Execute
The smart account validates authorization and executes on Robinhood Chain.
The building blocks.
2-of-3 threshold authorization
Signing authority is distributed across the device shard, policy co-signer, and passkey recovery factor. Any two form quorum.
ERC-4337 smart accounts
Avyro prepares programmable UserOperations so account behavior can include policy checks, recovery, and gas sponsorship.
Passkey recovery
A hardware-backed recovery factor creates an independent path to rotate access without making one seed phrase the only backup.
Policy-aware co-signing
The remote shard can apply spending limits, velocity rules, destination checks, and transaction-intent validation before co-signing.
Robinhood Chain
Avyro targets Robinhood Chain with Chain ID 4663, native ETH for gas, and USDG as a core settlement asset.
Open TypeScript SDK
The SDK exposes wallet, account, transfer, recovery, pay-link, bridge, staking, and guardrail primitives for developers.
Developer surface.
The open SDK is designed to expose Avyro account and payment primitives without forcing applications to reimplement threshold orchestration.
Continue through the product.
Each technical topic maps back to an interactive section on the main Avyro experience.