Overview
Euler V2 is a modular lending protocol that supports permissionless vault creation. On Monad, the factory has deployed 108 vaults covering a wide range of assets. Rampart discovers all vaults by iterating factory events and computes APR from the on-chain interest rate model.
APR is derived from the vault’s interestRate() return value using the formula: interestRate() / 1e27 * 31_536_000. This gives the annualized rate as a decimal (e.g. 0.087 = 8.7%).
Functions
getEulerVaults()
Returns all active Euler vaults discovered from factory events, sorted by APR descending.
Returns EulerVault[]
| Field | Type | Description |
|---|
address | string | Vault contract address |
asset | string | Underlying token address |
apr | number | Annualized supply rate (e.g. 0.087) |
totalSupply | bigint | Total assets supplied (raw) |
totalBorrow | bigint | Total assets borrowed (raw) |
utilization | number | Borrow / supply ratio (0-1) |
protocol | 'euler' | Protocol identifier |
const vaults = await sdk.getEulerVaults()
// → [
// { address: '0x...', asset: '0x...', apr: 0.087, totalSupply: 1200000n, utilization: 0.71, protocol: 'euler' },
// { address: '0x...', asset: '0x...', apr: 0.062, totalSupply: 800000n, utilization: 0.58, protocol: 'euler' },
// ]
getEulerBestSupply(asset?)
Returns the Euler vault with the highest APR. Optionally filtered to a specific underlying asset.
| Parameter | Type | Description |
|---|
asset | string (optional) | Filter by underlying token address |
EulerVault
// Best vault across all assets
const best = await sdk.getEulerBestSupply()
// → { address: '0x...', asset: '0x...', apr: 0.087, protocol: 'euler' }
// Best vault for USDC specifically
const USDC = '0xf817257fed379853cDe0fa4F97AB987181B1E5Ea'
const bestUsdc = await sdk.getEulerBestSupply(USDC)
getEulerTVL()
Returns total value locked across all Euler vaults in USD.
Returns number
const tvl = await sdk.getEulerTVL()
// → 20400000
// Euler V2 interest rate is stored as a per-second rate scaled to 1e27
// To get annualized APR:
const rawRate = await publicClient.readContract({
address: vaultAddress,
abi: eulerVaultAbi,
functionName: 'interestRate',
})
const apr = Number(rawRate) / 1e27 * 31_536_000
Usage Example
import { Rampart } from 'rampart-monad'
const sdk = new Rampart()
const vaults = await sdk.getEulerVaults()
// Top 3 vaults by APR
const top3 = vaults.slice(0, 3)
for (const v of top3) {
console.log(`Vault ${v.address}: ${(v.apr * 100).toFixed(2)}% APR, ${(v.utilization * 100).toFixed(1)}% utilized`)
}
Contract Addresses
| Contract | Address |
|---|
| EulerFactory | 0xba4dd672062de8feedb665dd4410658864483f1e |
