Base Andromeda
Reference for Core V3 + Perps V3 on Base
Evolving configuration
See Deployment Info
Introduction
Andromeda is the combination of
Core V3
Perps V3
USDC as collateral
The Spot Market is included, but only to be used as a mechanism to exchange the assets brought by traders and LPs (USDC) for the internal accounting tokens (sUSDC and sUSD).
Configuration
Unique to Andromeda Base is the use of a USDC wrapper, enabling USDC to appear to be used as collateral for LPs, and as margin as perp traders.
Underneath, USDC is wrapped and or traded into sUSDC for LP collateral (and collecting fees), and sUSD as perp margin
The full configuration of Base Goerli can be seen on Cannon
Configuration explained:
this is the part that deploys sUSDC (a USDC synth) and creates the spot market
USDC <--> sUSDC can be wrapped/unwrapped on the spot market
sUSD <--> sUSDC can be bought/sold on the spot market
No fee on these, all atomic so can be composed with multicalls
Coming: Andromeda Base Sandbox, but in the meant time see Cannon config
The Andromeda Release is configured to use oracle contracts which comply with ERC-7412. Use the client library when building off-chain integrations like UIs and bots.
For LP Integrators
LPs can arrive with USDC to provide liquidity (LP). The contracts or integrators need to:
Wrap USDC to sUSDC on the Spot Market
Function:
SpotMarketProxy.wrap(marketId, wrapAmount, amountReceived)
Example:
wrap(1, 1000000000000000000, 1000000000000000000)
Deposit sUSDC to Pool
Delegate sUSDC to Market
When withdrawing, initial collateral plus any fees can be withdrawn, then unwrapped from sUSDC to USDC.
For Perp Integrators
Integrators can create a seamless trading experience using USDC by utilizing the wrapper and spot market. Since USDC-sUSDC
and sUSDC-sUSD
exchanges are both 1:1 swaps, integrators can easily prepare a multicall to "zap" between USDC in their wallet and their account margin.
Preparing Margin Transactions
Integrators can directly deposit and withdraw USDC by preparing a multicall to execute in a single transaction. These transactions interact with the SpotMarketProxy
to wrap and swap USDC for sUSD. Use marketId = 1
for sUSDC
. Matching values like wrapAmount
and amountReceived
in the transactions will guarantee this 1:1 swap.
All transactions should be prepared as a multicall and sent to the TrustedMulticallForwarder
contracts using aggregate3Value
.
Prerequisites
An account must meet the following requirements to execute USDC transfers between their wallet and a perps account.
Deposit:
Holds an account NFT for perps. See creating an account.
Approve
SpotMarketProxy
to transfer USDCApprove
SpotMarketProxy
to transfer sUSDCApprove
PerpsMarketProxy
to transfer sUSD
Withdraw:
Account NFT has some withdrawable margin
Approve
SpotMarketProxy
to transfer sUSDApprove
SpotMarketProxy
to transfer sUSDC
Deposit perp margin
USDC -> sUSDC
- Wrap USDC on the spot marketFunction:
SpotMarketProxy.wrap(marketId, wrapAmount, amountReceived)
Example:
wrap(1, 1000000000000000000, 1000000000000000000)
sUSDC -> sUSD
- Sell sUSDC for sUSD on the spot marketFunction:
SpotMarketProxy.sell(marketId, synthAmount, minUsdAmount, referrer)
Example:
sell(1, 1000000000000000000, 1000000000000000000, 0x0000000000000000000000000000000000000000)
Deposit sUSD
Function:
PerpsMarketProxy.modifyCollateral(accountId, synthMarketId, amountDelta)
Example:
modifyCollateral(12345, 0, 1000000000000000000)
Withdraw perp margin
Withdraw sUSD
Function:
PerpsMarketProxy.modifyCollateral(accountId, synthMarketId, amountDelta)
Example:
modifyCollateral(12345, 0, -1000000000000000000)
sUSD -> sUSDC
- Buy sUSDC on the spot marketFunction:
SpotMarketProxy.buy(marketId, usdAmount, minAmountReceived, referrer)
Example:
buy(1, 1000000000000000000, 1000000000000000000, 0x0000000000000000000000000000000000000000)
sUSDC -> USDC
- Unwrap sUSDC on the spot marketFunction:
SpotMarketProxy.unwrap(marketId, unwrapAmount, minAmountReceived)
Example:
unwrap(1, 1000000000000000000, 1000000000000000000)
Sample Margin Transactions
Useful links
Perp order settlement and liquidation keepers are running on Goerli, and you can run your own Perps V3 Keepers
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