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chore: syrupUSDC adapter (#122)
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‎Makefile‎

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@@ -20,6 +20,7 @@ deploy-usde-mainnet :; forge script scripts/DeployEthereum.s.sol:DeployUSDeEther
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deploy-weeth-arbitrum :; forge script scripts/DeployArbitrumWeEth.s.sol:DeployWeEthArbitrum --rpc-url arbitrum $(common-flags)
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deploy-weeth-scroll :; forge script scripts/DeployScroll.s.sol:DeployWeEthScroll --rpc-url scroll $(common-flags)
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deploy-weeth-base :; forge script scripts/DeployBase.s.sol:DeployWeEthBase --rpc-url base $(deploy-pk)
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deploy-syrupusdc-base :; forge script scripts/DeployBase.s.sol:DeploySyrupUSDCBase --rpc-url base $(deploy-pk)
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deploy-oseth-mainnet :; forge script scripts/DeployEthereum.s.sol:DeployOsEthEthereum --rpc-url mainnet $(common-flags)
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‎reports/syrupUSDC_CL_Base.md‎

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# Capo Report
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| Capped SyrupUSDC / USDC / USD | Capped USDC/USD | Diff | Date | 7-day growth in yearly % |
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| ----------------------------- | --------------- | ------ | ----------- | ------------------------ |
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| 1.13814412 | 0.99971613 | 12.95% | 26 Nov 2025 | 5.58% |
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| 1.13845266 | 0.99982897 | 12.97% | 27 Nov 2025 | 5.58% |
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| 1.13855137 | 0.99975706 | 12.98% | 28 Nov 2025 | 5.60% |
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| 1.13876616 | 0.99978669 | 13.00% | 29 Nov 2025 | 5.63% |
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| 1.13898191 | 0.99981784 | 13.01% | 30 Nov 2025 | 5.66% |
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| 1.1391911 | 0.99984334 | 13.03% | 01 Dec 2025 | 5.67% |
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| 1.13939047 | 0.99986 | 13.04% | 02 Dec 2025 | 5.69% |
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| 1.13956778 | 0.99986 | 13.06% | 03 Dec 2025 | 5.66% |
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| 1.13969557 | 0.99982 | 13.08% | 04 Dec 2025 | 5.63% |
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| 1.13974272 | 0.9997105 | 13.09% | 05 Dec 2025 | 5.59% |
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| 1.14001033 | 0.99979 | 13.11% | 06 Dec 2025 | 5.57% |
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| 1.14028305 | 0.99987591 | 13.12% | 07 Dec 2025 | 5.55% |
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| 1.14034027 | 0.99977289 | 13.14% | 08 Dec 2025 | 5.52% |
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| 1.14055521 | 0.9998081 | 13.15% | 09 Dec 2025 | 5.49% |
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| 1.1407377 | 0.99982 | 13.17% | 10 Dec 2025 | 5.46% |
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| 1.1408815 | 0.9998 | 13.18% | 11 Dec 2025 | 5.42% |
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| 1.14105463 | 0.99980608 | 13.20% | 12 Dec 2025 | 5.40% |
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| 1.14127314 | 0.99985669 | 13.21% | 13 Dec 2025 | 5.32% |
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| 1.14145457 | 0.9998704 | 13.22% | 14 Dec 2025 | 5.28% |
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| 1.1416336 | 0.99988225 | 13.24% | 15 Dec 2025 | 5.24% |
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| 1.14177367 | 0.99986 | 13.25% | 16 Dec 2025 | 5.20% |
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| 1.14201986 | 0.99993132 | 13.27% | 17 Dec 2025 | 5.18% |
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| 1.14212161 | 0.99988 | 13.28% | 18 Dec 2025 | 5.15% |
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| 1.14223673 | 0.99984054 | 13.30% | 19 Dec 2025 | 5.12% |
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- 7-day growth is calculated as an annualized percentage relative to the value of the rate 7 days prior.
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| Max Yearly % | Max Day-to-day yearly % | Max 7-day yearly % |
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| ------------ | ----------------------- | ------------------ |
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| 8.04% | 5.74% | 5.69% |
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- Max day-to-day yearly % indicates the maximum growth between two emissions as an annualized percentage.

‎scripts/DeployBase.s.sol‎

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@@ -119,6 +119,27 @@ library CapAdaptersCodeBase {
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)
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);
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}
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function syrupUSDCAdapterCode() internal pure returns (bytes memory) {
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return
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abi.encodePacked(
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type(CLRatePriceCapAdapter).creationCode,
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abi.encode(
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IPriceCapAdapter.CapAdapterParams({
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aclManager: AaveV3Base.ACL_MANAGER,
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baseAggregatorAddress: AaveV3BaseAssets.USDC_ORACLE,
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ratioProviderAddress: ChainlinkBase.syrupUSDC_USDC_Exchange_Rate,
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pairDescription: 'Capped SyrupUSDC / USDC / USD',
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minimumSnapshotDelay: 7 days,
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priceCapParams: IPriceCapAdapter.PriceCapUpdateParams({
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snapshotRatio: 1_141275955119667166,
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snapshotTimestamp: 1765541747, // Dec-12-2025
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maxYearlyRatioGrowthPercent: 8_04
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})
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})
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)
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);
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}
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}
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contract DeployLBTCBase is BaseScript {
@@ -150,3 +171,9 @@ contract DeployEURCBase is BaseScript {
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GovV3Helpers.deployDeterministic(CapAdaptersCodeBase.EURCAdapterCode());
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}
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}
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contract DeploySyrupUSDCBase is BaseScript {
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function run() external broadcast {
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GovV3Helpers.deployDeterministic(CapAdaptersCodeBase.syrupUSDCAdapterCode());
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}
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}

‎tests/base/syrupUSDCCLBasePriceCapAdapterTest.t.sol‎

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// SPDX-License-Identifier: BUSL-1.1
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pragma solidity ^0.8.0;
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import {CLAdapterBaseTest} from '../CLAdapterBaseTest.sol';
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import {CapAdaptersCodeBase} from '../../scripts/DeployBase.s.sol';
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contract syrupUSDCCLBasePriceCapAdapterTest is CLAdapterBaseTest {
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constructor()
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CLAdapterBaseTest(
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CapAdaptersCodeBase.syrupUSDCAdapterCode(),
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30,
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ForkParams({network: 'base', blockNumber: 39684200}),
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'syrupUSDC_CL_Base'
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)
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{}
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}

‎tests/utils/GetExchangeRatesTest.t.sol‎

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@@ -16,6 +16,7 @@ import {MiscBase} from 'aave-address-book/MiscBase.sol';
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import {MiscGnosis} from 'aave-address-book/MiscGnosis.sol';
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import {MiscOptimism} from 'aave-address-book/MiscOptimism.sol';
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import {MiscPolygon} from 'aave-address-book/MiscPolygon.sol';
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import {ChainlinkBase} from 'aave-address-book/ChainlinkBase.sol';
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import {ICbEthRateProvider} from 'cl-synchronicity-price-adapter/interfaces/ICbEthRateProvider.sol';
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import {IrETH} from 'cl-synchronicity-price-adapter/interfaces/IrETH.sol';
@@ -165,7 +166,7 @@ contract ExchangeRatesAvax is Test {
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contract ExchangeRatesBase is Test {
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function setUp() public {
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vm.createSelectFork(vm.rpcUrl('base'), 31620903); // 2025-15-06
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vm.createSelectFork(vm.rpcUrl('base'), 39376200); // Dec-12-2025
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}
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function test_getExchangeRate() public view {
@@ -186,13 +187,18 @@ contract ExchangeRatesBase is Test {
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IChainlinkAggregator(CapAdaptersCodeBase.rsETH_ETH_AGGREGATOR).latestAnswer()
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);
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uint256 syrupUSDCCLRate = uint256(
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IChainlinkAggregator(ChainlinkBase.syrupUSDC_USDC_Exchange_Rate).latestAnswer()
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);
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console.log('Base');
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console.log('cbEthRate', cbEthRate);
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console.log('wstEthRate', wstEthRate);
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console.log('weEthRate', weEthRate);
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console.log('ezEthRate', ezEthRate);
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console.log('rsETHRate', rsETHRate);
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console.log('rsETHCLRate', rsETHCLRate);
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console.log('syrupUSDCCLRate', syrupUSDCCLRate);
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console.log(block.timestamp);
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}

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