Constants

Exported contract addresses, vault configs, and chain information. All constants are fully typed and tree-shakeable.

Contract Addresses

import {
  YO_GATEWAY_ADDRESS,
  VAULT_REGISTRY_ADDRESS,
  YO_ORACLE_ADDRESS,
  REDEEMER_ADDRESS,
} from '@yo-protocol/core'

Constant	Description	Address
YO_GATEWAY_ADDRESS	Deposit gateway router	0xF1EeE…69FA
VAULT_REGISTRY_ADDRESS	On-chain vault registry	0x56c31…2232
YO_ORACLE_ADDRESS	Price oracle	0x6E879…96B0
REDEEMER_ADDRESS	Async withdrawal redeemer	0x0439e…2162

Checksummed

All address constants are checksummed 0x${string} literals — they work directly with viem without additional formatting.

Vault Registry

The VAULTS object exposes every supported vault with its address, underlying token, and available chains.

import { VAULTS } from '@yo-protocol/core'

VAULTS.yoETH.address            // '0x3a43aec...'
VAULTS.yoETH.underlying.symbol  // 'WETH'
VAULTS.yoETH.chains             // [1, 8453]
VAULTS.yoUSD.chains             // [8453]

Available Vaults

ID	Underlying	Chains
yoETH	WETH	Ethereum, Base
yoBTC	cbBTC	Base
yoUSD	USDC	Base
yoEUR	EURC	Base
yoGOLD	XAUt	Ethereum
yoUSDT	USDT	Ethereum

Each vault entry includes:

Property	Type	Description
address	Address	Vault contract address
underlying.address	Address	Underlying ERC-20 token address
underlying.symbol	string	Token symbol
underlying.decimals	number	Token decimals
chains	number[]	Supported chain IDs

Chain Helpers

import {
  SUPPORTED_CHAINS,
  SUPPORTED_CHAIN_IDS,
  isSupportedChain,
  getChain,
} from '@yo-protocol/core'

SUPPORTED_CHAIN_IDS  // [1, 8453]

isSupportedChain(8453) // true
isSupportedChain(137)  // false

const chain = getChain(8453)  // viem Chain object for Base

Export	Type	Description
SUPPORTED_CHAINS	Chain[]	Array of viem chain objects
SUPPORTED_CHAIN_IDS	number[]	[1, 8453]
isSupportedChain(id)	(id: number) => boolean	Check if a chain ID is supported
getChain(id)	(id: number) => Chain	Get viem chain object by ID