Subgraphs
Subgraphs are a powerful way to index and query on-chain data from Euler V2 smart contracts. They allow developers, analysts, and integrators to access protocol data efficiently using GraphQL, without needing to parse events or maintain their own indexing infrastructure.
Euler maintains multiple subgraphs, each tailored to a specific network where the protocol is deployed. These subgraphs are hosted on both Goldsky and The Graph, providing reliable and fast access to historical and real-time data.
Source Code
The source code for all Euler subgraphs is open source and available on GitHub. It includes the GraphQL schema, entity definitions, and event handling logic for all supported networks.
Available Networks and Endpoints
Each network where Euler is live has its own dedicated subgraph instance. Below are the main GraphQL endpoints hosted by Goldsky:
Goldsky
You can also find subgraphs hosted on The Graph's hosted service. For a full list, visit the The Graph Explorer but keep in mind that The Graph subgraphs may not be up-to-date.
How to Get Active Positions of an Account
A common question is how to retrieve all active positions (deposits and borrows) for a given account in Euler. While a dedicated API is in development, you can already do this efficiently using the subgraph and lens contracts.
Step 1: Query the Subgraph for Active Positions
Use the trackingActiveAccount query to get all positions and their associated vaults for a given address:
query Accounts($address: ID!) {
trackingActiveAccount(id: $address) {
mainAddress
deposits
borrows
}
}This will return lists of deposits and borrows, each entry formatted as ${position}${vault} (e.g., 0x4eda703f4D792B093cd64e452CBa7cA0ed06F6e76d671b9c618d5486814feb777552ba723f1a235c).
To parse these entries in JavaScript:
const vault = `0x${entry.substring(42)}`;
const subAccount = entry.substring(0, 42);subAccountis the address of the sub-account holding the positionvaultis the address of the vault
Step 2: Fetch Detailed Data Using Lens Contracts
Once you have the list of sub-accounts and vaults, use the lens contracts for detailed information:
- Use
AccountLensfor account-level data (balances, health, rewards, etc.) - Use
VaultLensfor vault-specific details (configuration, caps, rates, etc.)
Step 3: Vault Verification with Perspectives
For the list of vaults, you can use Perspectives to check whether a vault is verified and meets your criteria. This helps filter for trusted or curated vaults.
How to get information about the vaults
EulerVaults
With that query, you get all the vault information.
query Vaults {
eulerVaults{
id
evc
evault
name
borrowCap
supplyCap
dToken
decimals
permit2Address
perspectives
interestRateModel
collaterals # It's a list of vault addresses
governonAdmin
feeReceiver
asset
oracle
creator
symbol
unitOfAccount
interestFee
state{
vault
totalShares
totalBorrows
accumulatedFees
cash
interestAccumulator
interestRate
supplyApy
borrowApy
timestamp
}
}
}- The state parameter will be updated with the vaultState events, and you can check the historical data directly from the raw event.
query VaultStateHistory($address: ID!) {
vaultStatuses(where:{vault:$address$}){
vault
totalShares
totalBorrows
accumulatedFees
cash
interestAccumulator
interestRate
supplyApy
borrowApy
timestamp
}
}EulerEarn
query EulerEarnVaults {
eulerEarnVaults {
id
name
owner
asset
creator
curator
evc
feeReceiver
guardian
pendingGuardian
pendingGuardianValidAt
pendingTimelock
pendingTimelockValidAt
performanceFee
perspectives
supplyQueue
symbol
timelock
totalAllocated
totalAssets
totalLostAssets
totalShares
totalSupply
transactionHash
strategies {
id
allocatedAssets
availableAssets
currentAllocationCap
pendingAllocationCapValidAt
pendingAllocationCap
pendingAllocationCapValidAt
removableAt
strategy # eulerVault
}
blockNumber
blockTimestamp
}
}EulerSwapPools
With that query you can get the current pools created
query EulerSwapPools {
eulerSwapPools {
active
asset0
asset1
blockNumber
blockTimestamp
concentrationX
concentrationY
currReserve0
currReserve1
equilibriumReserve0
equilibriumReserve1
eulerAccount
fee
id
pool
priceX
priceY
protocolFee
protocolFeeRecipient
transactionHash
vault0
vault1
}
}Now we can show the history of the swaps
query EulerSwapSwaps {
eulerSwaps {
amount0In
amount0Out
amount1In
amount1Out
blockNumber
blockTimestamp
from
id
pool
reserve0
reserve1
sender
to
transactionHash
}
}search by pool
query EulerSwapSwapsByPool($pool: Bytes!) {
eulerSwaps(where:{pool: $pool }) {
amount0In
amount0Out
amount1In
amount1Out
blockNumber
blockTimestamp
from
id
pool
reserve0
reserve1
sender
to
transactionHash
}
}