Dolomite

About

Dolomite is an account-based lending protocol deployed on Arbitrum, Base, and Ethereum. Unlike most lending protocols that issue receipt tokens (like aTokens or cTokens), Dolomite tracks positions directly inside the DolomiteMargin contract — each position is keyed by (owner, accountNumber, marketId), where a positive balance represents a supply and a negative balance represents a borrow.

Users supply any supported asset into a Dolomite market and earn yield from borrower interest. Markets are identified by numerical IDs (not token addresses), and each market maps to a single underlying ERC-20 token.

Dolomite Earn Contract Architecture

All user interactions are routed through two core contracts:

• DolomiteMargin: the core accounting and margin engine. Stores all balances, interest data, and market configuration. Used to read user positions via getAccountWei(account, marketId).
• DepositWithdrawalRouter: the entry point for deposits and withdrawals. Calls depositWei() to supply and withdrawWei() to withdraw. Deployed at the same address across all networks.

There are no receipt tokens minted — the user's supplied balance lives entirely inside DolomiteMargin's accounting.

The base implementation does not use dTokens. dTokens are Dolomite's ERC-4626 vault wrappers around a user's Dolomite balance — they represent the same underlying position but expose it as a standard vault share token. When fee configuration is enabled in the Yield API, the interaction path changes: deposits and withdrawals will be routed via OAVs which interact with Dolomite's dToken contracts instead of the DepositWithdrawalRouter.

Regardless of the path, the user flow remains the same: deposit to start earning yield from borrower interest, withdraw at any time (subject to available liquidity on Dolomite).

Pending Actions

None

Considerations

• Contract routing: The base integration uses the DepositWithdrawalRouter (Option A). When fee_configuration is enabled, the interaction is routed via dToken (ERC-4626) contracts (Option B).
• No receipt token: Unlike Aave's aTokens or Spark's spTokens, the default Dolomite Earn path does not mint a receipt token. The user's lent balance is tracked internally in DolomiteMargin. The dToken (ERC-4626) representation is only available for select markets.

List of Integration IDs

Arbitrum

Ethereum

Base