Developer PortalAdd Privacy to
Your App in 5 Lines
Integrate shielded token transfers on Avalanche with the Shroud SDK. No ZK expertise required. No cryptography headaches. Just import and build.
import { ShroudClient } from '@shroud/sdk';
const shroud = new ShroudClient({
apiKey: 'sk_live_...',
network: 'avalanche'
});
// Deposit, transfer, withdraw — all private
await shroud.deposit({ token: 'USDC', amount: 1000 });
await shroud.transfer({ to: recipientPubKey, amount: 500 });Everything You Need
Privacy integration without the complexity. The SDK and API handle all the cryptography so you can focus on your product.
Simple SDK
Import @shroud/sdk, initialize with your API key, and start building. Deposit, transfer, and withdraw — all in a few lines of TypeScript.
Client-Side Proofs
ZK proofs generated locally in the browser or Node.js via WASM. Your users' private data never leaves their device.
Gasless Relay
Users don't need AVAX. The SDK submits transactions through our relay service — gas fees handled for you.
API Key Auth
Rate-limited API keys with separate live and test environments. Manage keys, track usage, and control access from the dashboard.
Avalanche Native
Built for Avalanche C-Chain with sub-second finality. Multi-token support — USDC, AVAX, and any ERC20.
Server-Side Proofs
Optionally offload proof generation to our API for serverless environments. Witness data encrypted in transit, never stored.
WebSocket Notifications
Real-time note notifications via WebSocket. Know instantly when your users receive shielded transfers.
@shroud/sdk
A standalone TypeScript package for browser and Node.js. Wraps all ZK cryptography, proof generation, Merkle tree management, and encrypted memo handling into a clean, developer-friendly facade.
createWallet()→ ShroudWalletGenerate or restore a Baby Jubjub keypair for shielded operations
deposit({ token, amount, signer })→ TransactionResultLock ERC20 tokens into the shielded pool and receive a private commitment
transfer({ to, amount })→ TransactionResultMove value privately inside the pool — amounts, sender, and recipient are hidden
withdraw({ amount, recipient })→ TransactionResultExit the shielded pool and receive ERC20 tokens at any address
getBalance(wallet)→ ShieldedBalanceSum unspent notes for a token to get the total shielded balance
sync(wallet)→ voidScan chain events and trial-decrypt memos to discover incoming notes
RESTful API
Relay transactions, generate proofs server-side, query pool state, and receive real-time notifications — all authenticated with your API key.
/v1/relay/transfer/v1/relay/withdraw/v1/relay/deposit/v1/proof/transfer/v1/pools/v1/merkle/root/v1/events/memos/v1/wsRate Limits
API Key Types
How It Works
Your app talks to the SDK. The SDK handles cryptography and talks to the API. The API relays to Avalanche. Privacy is preserved at every layer.
Get Early Access
We're launching the Shroud SDK & API in a closed private beta very soon. Join the waitlist to get early access.