📈Fixed-Rate Lending Subgraph
Documentation for querying the Fixed-Rate Lending Subgraph
The Fixed-Rate Lending Subgraph indexes data from the Secured Finance Fixed-Rate Lending protocol, enabling developers to query historical and current data using GraphQL.
Overview
The Fixed-Rate Lending protocol provides a platform for fixed-rate lending and borrowing through an order book system. The subgraph allows you to query information about orders, lending markets, transactions, positions, and other protocol activities.
How It Works
The Fixed-Rate Lending Subgraph continuously indexes events emitted by the Fixed-Rate Lending smart contracts. This data is organized into entities that can be queried using GraphQL, providing real-time access to protocol data without requiring direct interaction with the blockchain.
Subgraph Endpoints
For the complete list of subgraph endpoints, please refer to the API Reference page.
You can access the Fixed-Rate Lending Subgraph through these endpoints:
Note: The Filecoin subgraph endpoints are currently under development. Please check back later for updated URLs.
Key Entities
The Fixed-Rate Lending Subgraph schema includes these primary entities:
Transaction
Represents a transaction on the Fixed-Rate Lending protocol.
type Transaction @entity {
id: ID!
currency: Bytes!
maturity: BigInt!
side: Int!
executionPrice: BigInt!
user: User!
executionType: TransactionExecutionType!
futureValue: BigInt!
amount: BigInt!
feeInFV: BigInt!
averagePrice: BigDecimal!
lendingMarket: LendingMarket!
order: Order!
createdAt: BigInt!
blockNumber: BigInt!
txHash: Bytes!
}
enum TransactionExecutionType {
Maker
Taker
}User
Represents users who interact with the Fixed-Rate Lending protocol.
type User @entity {
id: ID! # wallet address
createdAt: BigInt!
transactionCount: BigInt!
transactions: [Transaction!]! @derivedFrom(field: "user")
orderCount: BigInt!
orders: [Order!]! @derivedFrom(field: "user")
liquidationCount: BigInt!
liquidations: [Liquidation!]! @derivedFrom(field: "user")
transferCount: BigInt!
transfers: [Transfer!]! @derivedFrom(field: "user")
deposits: [Deposit!]! @derivedFrom(field: "user")
takerVolumesByCurrency: [TakerVolumeByCurrency!]! @derivedFrom(field: "user")
}Order
Represents an order in the order book.
type Order @entity {
id: ID!
orderId: BigInt!
user: User!
currency: Bytes!
side: Int!
maturity: BigInt!
inputUnitPrice: BigInt!
inputAmount: BigInt!
filledAmount: BigInt!
status: OrderStatus!
statusUpdatedAt: BigInt!
lendingMarket: LendingMarket!
isPreOrder: Boolean!
type: OrderType!
transactions: [Transaction!]! @derivedFrom(field: "order")
isCircuitBreakerTriggered: Boolean!
createdAt: BigInt!
blockNumber: BigInt!
txHash: Bytes!
}
enum OrderType {
Market
Limit
Unwind
}
enum OrderStatus {
Open
PartiallyFilled
Filled
Killed
Cancelled
}LendingMarket
Represents a lending market for a specific currency and maturity.
type LendingMarket @entity {
id: ID!
currency: Bytes!
maturity: BigInt!
isActive: Boolean!
transactions: [Transaction!]! @derivedFrom(field: "lendingMarket")
orders: [Order!]! @derivedFrom(field: "lendingMarket")
volume: BigInt!
dailyVolume: [DailyVolume!]! @derivedFrom(field: "lendingMarket")
openingUnitPrice: BigInt!
lastLendUnitPrice: BigInt!
lastBorrowUnitPrice: BigInt!
offsetAmount: BigInt!
}Liquidation
Records details of a liquidation event.
type Liquidation @entity {
id: ID!
collateralCurrency: Bytes!
debtCurrency: Bytes!
debtMaturity: BigInt!
debtAmount: BigInt!
user: User!
timestamp: BigInt!
blockNumber: BigInt!
txHash: Bytes!
}Transfer
Records details of a deposit or withdrawal.
type Transfer @entity {
id: ID!
user: User!
currency: Bytes!
amount: BigInt!
transferType: TransferType!
timestamp: BigInt!
blockNumber: BigInt!
txHash: Bytes!
}
enum TransferType {
Deposit
Withdraw
}Deposit
Records details of a user's deposit.
type Deposit @entity {
id: ID!
user: User!
currency: Bytes!
amount: BigInt!
}DailyVolume
Records daily trading volume for a lending market.
type DailyVolume @entity {
id: ID! # currency-maturity-date(yyyy-mm-dd)
currency: Bytes!
maturity: BigInt!
day: String! # dd-mm-yyyy
volume: BigInt!
timestamp: BigInt!
lendingMarket: LendingMarket!
}Protocol
Records protocol-wide statistics.
type Protocol @entity {
id: ID! # 1
totalUsers: BigInt!
volumesByCurrency: [ProtocolVolumeByCurrency!]! @derivedFrom(field: "protocol")
}ProtocolVolumeByCurrency
Records total volume by currency for the protocol.
type ProtocolVolumeByCurrency @entity {
id: ID! # currency
protocol: Protocol!
currency: Bytes!
totalVolume: BigInt!
}TakerVolumeByCurrency
Records taker volume by currency for a user.
type TakerVolumeByCurrency @entity {
id: ID! # user-currency
user: User!
currency: Bytes!
totalVolume: BigInt!
totalVolumesByInterval: [TakerVolumeByIntervalAndCurrency!]! @derivedFrom(field: "takerVolumesByCurrency")
}TransactionCandleStick
Records price candles for transactions.
type TransactionCandleStick @entity {
id: ID! # A composite ID, e.g., "currency-maturity-interval-epochTime"
interval: BigInt! # interval in seconds
currency: Bytes!
maturity: BigInt!
timestamp: BigInt! # The start time of the interval
open: BigInt!
close: BigInt!
high: BigInt!
low: BigInt!
average: BigDecimal!
volume: BigInt!
volumeInFV: BigInt!
lendingMarket: LendingMarket!
}TakerVolumeByIntervalAndCurrency
Records taker volume by interval and currency.
type TakerVolumeByIntervalAndCurrency @entity {
id: ID! # Composite ID, e.g., "user-currency-interval-createdAt"
takerVolumesByCurrency: TakerVolumeByCurrency!
currency: Bytes!
interval: BigInt!
createdAt: BigInt! # The start time of the interval
volume: BigInt! # Total transaction volume for the interval
updatedAt: BigInt! # Timestamp when the record was last updated
}Examples
See the Query Examples page for sample queries to get started.
Interactive Documentation
You can interact with the Fixed-Rate Lending Subgraph directly through GraphQL using The Graph's Playground by visiting the subgraph endpoints listed above.
For interactive API documentation embedded directly in this documentation, please refer to the API Reference page.
FAQ
How do I query all active orders for a specific market?
Use the orders entity with filters:
{
orders(
where: {
lendingMarket: "0x123...",
status_in: [Open, PartiallyFilled]
}
) {
id
user { id }
side
inputAmount
inputUnitPrice
status
}
}How can I monitor new lending markets?
Subscribe to lending market events:
subscription {
lendingMarket(orderBy: maturity, orderDirection: desc) {
id
currency
maturity
isActive
lastLendUnitPrice
lastBorrowUnitPrice
}
}How do I calculate APR from unit prices?
The unit price in the Fixed-Rate Lending protocol represents a percentage of par value. To convert to APR:
Related Resources
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