Glossary - XOXNO Docs

Use these definitions while reading the guides. Links lead to the full explanation of each topic.

Accounts and actions

Term	Definition
Lending account	A group of supplied assets and debts evaluated together. One wallet can own several accounts.
Position NFT	The transferable token that controls a lending account, including its collateral and debt. See ownership.
Debt	The amount an account owes after borrowing, including accrued interest.
Delegate	A governance-approved, active position manager that the account owner authorizes to act on the account.
Supply	Assets added to a lending account to earn variable interest and serve as collateral. See Supply.
Borrow	Assets received against collateral, creating debt that accrues interest. See Borrow.
Repay	A payment that reduces debt. See Repay.
Withdraw	Removal of supplied assets, subject to liquidity and account checks. See Withdraw.

Liquidity and interest

Term	Definition
Central pool	The contract holding lending assets and tracking separate market balances. See Liquidity model.
Hub	A group that separates market accounting. The same token in two hubs forms two markets. See Hubs.
Market	One asset in one hub, with its own liquidity, debt, and interest settings. See Markets.
Spoke	The risk profile an account is permanently bound to. Its eligible markets, collateral settings, and caps can change through governance. See Spokes.
Utilization	The fraction of a market’s total supplied balance that is borrowed. See Interest and revenue.
APY	Annual percentage yield: an annual rate including a compounding assumption. A variable APY is not a promised return.
APR	Annual percentage rate: an annual rate excluding the compounding effect included in APY.
Reserve factor	The share of borrower interest allocated to protocol revenue.
Interest index	A multiplier used to convert an internal balance into a supplied amount or debt with accrued interest. See the interest reference.
Scaled balance	The internal balance converted using the relevant supply or borrow interest index.

Collateral and risk

Term	Definition
Collateral	Supplied assets backing an account’s debt.
LTV	Loan-to-value: the share of collateral value counted toward borrowing capacity. See Risk parameters.
Liquidation threshold	The share of collateral value used in the health-factor calculation.
Health factor	Collateral value weighted by liquidation thresholds, divided by debt value. Below 1 means eligible for liquidation. A maximum reported value alone does not prove the account has no debt. See Health factor.
Liquidation bonus	Extra collateral value allocated to a liquidator above debt repaid, subject to caps, available collateral, fees, and rounding. See Liquidations.
Bad debt	Debt that cannot be recovered from collateral. A write-off reduces supply claims in the affected market.
Supply or borrow cap	The limit on ordinary supply or debt exposure for one market on a spoke. A zero cap blocks ordinary new exposure. Liquidation share credits bypass the supply cap.
Slippage	The difference between a quoted swap outcome and the amount received at execution.

Prices and governance

Term	Definition
Oracle	A source of asset prices used in account valuation. See Oracles.
Price aggregator	The protocol service that reads and validates configured price sources.
Fail-closed pricing	An action requiring an invalid or unavailable price fails instead of proceeding.
RWA	Real-world asset, including tokenized claims linked to assets outside the blockchain.
NAV	Net asset value, used by some asset issuers and oracle feeds to value shares.
Governance	The administrative contract and designated roles controlling protocol settings. See Governance.
Timelock	A required delay between scheduling a governance operation and executing it.

Integration terms

Term	Definition
Controller	The contract that accepts lending actions and checks account rules. See System architecture.
SAC	Stellar Asset Contract: the contract interface for a classic Stellar asset, including XLM. Custom Soroban tokens can use the same token interface.
XDR	External Data Representation: the format Stellar uses to encode transactions and contract values. Transaction XDR can be unsigned or signed.
Soroban RPC	A service used to read contract state, simulate and prepare transactions, submit them, and check their status.
`sourceSequence`	The current sequence number of the Stellar source account, supplied to a transaction builder as a decimal string. It is unrelated to a lending account ID.
`accountId`	The lending account identifier returned by portfolio reads. It identifies the position NFT within its network and NFT contract.
`accountNonce`	The lending account ID used by transaction builders. For supply, `0` requests a new account; an existing ID selects that account.
Flash loan	A loan repaid with its fee before the same transaction ends. See Flash loans.
Flash position	A callback-based action that creates collateralized debt remaining after the transaction. It has no flash-loan fee. See Flash positions.
Blend migration	A transaction moving selected balances from an approved Blend pool to XOXNO. See Blend migration.
DeFindex	A third-party vault protocol with an adapter that supplies vault assets to XOXNO. See DeFindex strategy.
Basis points (BPS)	A percentage unit: 100 basis points equals 1%.
Token base unit	The smallest amount represented by a token’s decimal precision. For a two-decimal token, one base unit is 0.01 tokens.
RAY	A fixed-point scale of 10^27 used for internal balances and interest indexes. See the type reference.
WAD	A fixed-point scale of 10^18 used for prices, USD values, and health factor. See the type reference.