@shroud-fi/transport

Pluggable viem-based transport + canonical Base mainnet deployment manifest.

npm i @shroud-fi/transport viem

What it does

@shroud-fi/transport is the I/O layer for the ShroudFi SDK. It wraps viem clients for RPC reads, contract calls, and event subscription — and ships the canonical Base mainnet deployment manifest (ShroudFiStealth, ShroudFiRegistrar, relayer addresses, deploy block heights).

You can swap your own RPC URL or a private mempool transport in without touching the rest of the SDK.

Quick start

import { createTransport, getDeployment } from '@shroud-fi/transport';
import { base } from 'viem/chains';

const transport = createTransport({
  chain: base,
  rpcUrl: process.env.BASE_RPC_URL!,
});

const deployment = getDeployment(8453);
console.log(deployment.shroudfiStealth);
// → 0x4BC88813b09dDD6Ab530261200D706B397EcD0AB

Exports

| Symbol | Purpose | |---|---| | createTransport(cfg) | Build a transport from chain, rpcUrl, or an existing viem client. | | getDeployment(chainId) | Lookup verified contract addresses + deploy blocks by chain ID. Base mainnet = 8453. | | ShroudFiStealthAbi · RegistrarAbi · RelayerAbi · EthRelayerAbi | Typed ABIs for every deployed contract. | | DeploymentManifest | Type for the manifest. | | getEip3009Token(chainId, addr) | v0.1.1 — look up an EIP-3009 token by chain + address (case-insensitive). Returns {symbol, address, decimals, domain} or undefined. | | getEip3009TokenBySymbol(chainId, symbol) | v0.1.1 — same lookup by symbol ('USDC', 'EURC'). | | listEip3009Tokens(chainId) | v0.1.1 — enumerate all EIP-3009 tokens for a chain. |

Full API reference: shroudfi.live/sdk#transport

Supported chains

• Base mainnet (8453) — production, contracts verified on Blockscout.

Other chains can be added by extending the manifest at deploy time; the SDK is chain-agnostic by design.

License

MIT — see LICENSE.

Part of the ShroudFi privacy SDK for AI agents on Base.