diff --git a/src/adapter/pendle/PendleUnifiedOracle.sol b/src/adapter/pendle/PendleUnifiedOracle.sol
new file mode 100644
index 00000000..b262324d
--- /dev/null
+++ b/src/adapter/pendle/PendleUnifiedOracle.sol
@@ -0,0 +1,151 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+pragma solidity ^0.8.0;
+
+import {IPMarket} from "@pendle/core-v2/interfaces/IPMarket.sol";
+import {IPPrincipalToken} from "@pendle/core-v2/interfaces/IPPrincipalToken.sol";
+import {IPPYLpOracle} from "@pendle/core-v2/interfaces/IPPYLpOracle.sol";
+import {IStandardizedYield} from "@pendle/core-v2/interfaces/IStandardizedYield.sol";
+import {PendlePYOracleLib} from "@pendle/core-v2/oracles/PtYtLpOracle/PendlePYOracleLib.sol";
+import {PendleLpOracleLib} from "@pendle/core-v2/oracles/PtYtLpOracle/PendleLpOracleLib.sol";
+import {BaseAdapter, Errors, IPriceOracle} from "../BaseAdapter.sol";
+import {ScaleUtils, Scale} from "../../lib/ScaleUtils.sol";
+import {Ownable2Step} from "@openzeppelin/contracts/access/Ownable2Step.sol";
+
+/// @title PendleUnifiedOracle
+/// @custom:security-contact security@euler.xyz
+/// @author Euler Labs (https://www.eulerlabs.com/)
+/// @notice Adapter for Pendle PT and LP Oracle.
+contract PendleUnifiedOracle is BaseAdapter, Ownable2Step {
+    /// @inheritdoc IPriceOracle
+    string public constant name = "PendleUnifiedOracle";
+    /// @dev The minimum length of the TWAP window.
+    uint32 internal constant MIN_TWAP_WINDOW = 5 minutes;
+    /// @dev The maximum length of the TWAP window.
+    uint32 internal constant MAX_TWAP_WINDOW = 60 minutes;
+    /// @notice The decimals of the Pendle Oracle. Fixed to 18.
+    uint8 internal constant FEED_DECIMALS = 18;
+
+    struct PairParams {
+        /// @notice The address of the Pendle market.
+        address pendleMarket;
+        /// @notice The desired length of the twap window.
+        uint32 twapWindow;
+        /// @notice The flag indicating the direction of the price. False when base/quote, true - quote/base
+        bool inverse;
+        /// @notice The PendlePYOracleLib function to call.
+        function (IPMarket, uint32) view returns (uint256) getRate;
+        /// @notice The scale factors used for decimal conversions.
+        Scale scale;
+    }
+
+    mapping(address => mapping(address => PairParams)) private _configuredPairs;
+
+    address public immutable pendleOracle;
+
+    event PairAdded(address indexed pendleMarket, address indexed base, address indexed quote, uint32 twapWindow);
+
+    constructor(address _pendleOracle) {
+        if (_pendleOracle == address(0)) {
+            revert Errors.ZeroAddress();
+        }
+
+        pendleOracle = _pendleOracle;
+    }
+
+    /// @dev The oracle can price Pendle PT,LP to SY,Asset. Whether to use SY or Asset depends on the underlying.
+    /// Consult https://docs.pendle.finance/Developers/Contracts/StandardizedYield#standard-sys for more information.
+    /// Before deploying this adapter ensure that the oracle is initialized and the observation buffer is filled.
+    /// Note that this adapter allows specifing any `quote` as the underlying asset.
+    /// @param _pendleMarket The address of the Pendle market.
+    /// @param _base The address of the PT or LP token.
+    /// @param _quote The address of the SY token or the underlying asset.
+    /// @param _twapWindow The desired length of the twap window.
+    function addPair(address _pendleMarket, address _base, address _quote, uint32 _twapWindow) external onlyOwner {
+        //Verify that the pair is not already initialized.
+        if (_configuredPairs[_base][_quote].pendleMarket != address(0)) {
+            revert Errors.PriceOracle_AlreadyInitialized();
+        }
+
+        // Verify that the TWAP window is sufficiently long.
+        if (_twapWindow < MIN_TWAP_WINDOW || _twapWindow > MAX_TWAP_WINDOW) {
+            revert Errors.PriceOracle_InvalidConfiguration();
+        }
+
+        // Verify that the observations buffer is adequately sized and populated.
+        (bool increaseCardinalityRequired,, bool oldestObservationSatisfied) =
+            IPPYLpOracle(pendleOracle).getOracleState(_pendleMarket, _twapWindow);
+        if (increaseCardinalityRequired || !oldestObservationSatisfied) {
+            revert Errors.PriceOracle_InvalidConfiguration();
+        }
+
+        (IStandardizedYield sy, IPPrincipalToken pt,) = IPMarket(_pendleMarket).readTokens();
+        (, address asset,) = sy.assetInfo();
+
+        PairParams memory pairParams;
+
+        if (_base == address(pt)) {
+            if (_quote == address(sy)) {
+                pairParams.getRate = PendlePYOracleLib.getPtToSyRate;
+            } else if (asset == _quote) {
+                // Pendle do not recommend to use this type of price
+                // https://docs.pendle.finance/Developers/Oracles/HowToIntegratePtAndLpOracle
+                pairParams.getRate = PendlePYOracleLib.getPtToAssetRate;
+            } else {
+                revert Errors.PriceOracle_InvalidConfiguration();
+            }
+        } else if (_base == _pendleMarket) {
+            if (_quote == address(sy)) {
+                pairParams.getRate = PendleLpOracleLib.getLpToSyRate;
+            } else if (asset == _quote) {
+                pairParams.getRate = PendleLpOracleLib.getLpToAssetRate;
+            } else {
+                revert Errors.PriceOracle_InvalidConfiguration();
+            }
+        } else {
+            revert Errors.PriceOracle_InvalidConfiguration();
+        }
+
+        pairParams.pendleMarket = _pendleMarket;
+        pairParams.twapWindow = _twapWindow;
+        pairParams.inverse = false;
+
+        // We don't need to worry about decimals base and quote decimals scaling,
+        // Pendle formula to access LP (rawX) in SY (rawY)
+        // rawY= rawX × lpToSyRate / 10^18
+        //
+        // https://docs.pendle.finance/Developers/Oracles/HowToIntegratePtAndLpOracle
+        pairParams.scale = ScaleUtils.calcScale(0, 0, FEED_DECIMALS);
+
+        _configuredPairs[_base][_quote] = pairParams;
+
+        pairParams.inverse = true;
+        _configuredPairs[_quote][_base] = pairParams;
+
+        emit PairAdded(_pendleMarket, _base, _quote, _twapWindow);
+    }
+
+    /// @notice Get a quote by calling the Pendle oracle.
+    /// @param inAmount The amount of `base` to convert.
+    /// @param _base The token that is being priced.
+    /// @param _quote The token that is the unit of account.
+    /// @dev Note that the quote does not include instantaneous DEX slippage.
+    /// @return The converted amount using the Pendle oracle.
+    function _getQuote(uint256 inAmount, address _base, address _quote) internal view override returns (uint256) {
+        PairParams memory pairParams = _configuredPairs[_base][_quote];
+        if (pairParams.pendleMarket == address(0)) {
+            revert Errors.PriceOracle_InvalidConfiguration();
+        }
+
+        uint256 unitPrice = pairParams.getRate(IPMarket(pairParams.pendleMarket), pairParams.twapWindow);
+        return ScaleUtils.calcOutAmount(inAmount, unitPrice, pairParams.scale, pairParams.inverse);
+    }
+
+    function getConfiguredPair(address _base, address _quote)
+        external
+        view
+        returns (address pendleMarket, uint32 twapWindow, bool inverse, Scale scale)
+    {
+        PairParams memory pairParams = _configuredPairs[_base][_quote];
+        return (pairParams.pendleMarket, pairParams.twapWindow, pairParams.inverse, pairParams.scale);
+    }
+}
diff --git a/src/lib/Errors.sol b/src/lib/Errors.sol
index 8fa36b61..0f2948d7 100644
--- a/src/lib/Errors.sol
+++ b/src/lib/Errors.sol
@@ -6,6 +6,7 @@ pragma solidity ^0.8.0;
 /// @author Euler Labs (https://www.eulerlabs.com/)
 /// @notice Collects common errors in PriceOracles.
 library Errors {
+    error ZeroAddress();
     /// @notice The external feed returned an invalid answer.
     error PriceOracle_InvalidAnswer();
     /// @notice The configuration parameters for the PriceOracle are invalid.
@@ -22,4 +23,6 @@ library Errors {
     error PriceOracle_TooStale(uint256 staleness, uint256 maxStaleness);
     /// @notice The method can only be called by the governor.
     error Governance_CallerNotGovernor();
+    /// @notice The price oracle has already been initialized.
+    error PriceOracle_AlreadyInitialized();
 }
diff --git a/test/adapter/pendle/PendleAddresses.sol b/test/adapter/pendle/PendleAddresses.sol
index af13b139..5a81a5f6 100644
--- a/test/adapter/pendle/PendleAddresses.sol
+++ b/test/adapter/pendle/PendleAddresses.sol
@@ -30,3 +30,7 @@ address constant PENDLE_CORN_UNIBTC_1224_SY = 0xAE754a3B4553EA2EA4794d0171a56Ac1
 address constant PENDLE_CORN_SOLVBTCBBN_1224_MARKET = 0xEb4d3057738b9Ed930F451Be473C1CCC42988384;
 address constant PENDLE_CORN_SOLVBTCBBN_1224_PT = 0x23e479ddcda990E8523494895759bD98cD2fDBF6;
 address constant PENDLE_CORN_SOLVBTCBBN_1224_SY = 0xEC30E55B51D9518cfcf5e870BCF89c73F5708f72;
+
+address constant PENDLE_ETHENA_SUSDE_0925_MARKET = 0xA36b60A14A1A5247912584768C6e53E1a269a9F7;
+address constant PENDLE_ETHENA_SUSDE_0925_PT = 0x9F56094C450763769BA0EA9Fe2876070c0fD5F77;
+address constant PENDLE_ETHENA_SUSDE_0925_SY = 0xC01cde799245a25e6EabC550b36A47F6F83cc0f1;
diff --git a/test/adapter/pendle/PendleUnifiedOracle/PendleUnifiedOracle.fork.t.sol b/test/adapter/pendle/PendleUnifiedOracle/PendleUnifiedOracle.fork.t.sol
new file mode 100644
index 00000000..b6c2d3a0
--- /dev/null
+++ b/test/adapter/pendle/PendleUnifiedOracle/PendleUnifiedOracle.fork.t.sol
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+pragma solidity ^0.8.0;
+
+import {
+    PENDLE_ORACLE,
+    PENDLE_ETHENA_SUSDE_0925_MARKET,
+    PENDLE_ETHENA_SUSDE_0925_PT,
+    PENDLE_ETHENA_SUSDE_0925_SY
+} from "test/adapter/pendle/PendleAddresses.sol";
+import {EETH, EBTC, USDC, USDE, WBTC} from "test/utils/EthereumAddresses.sol";
+import {ForkTest} from "test/utils/ForkTest.sol";
+import {PendleUnifiedOracle} from "src/adapter/pendle/PendleUnifiedOracle.sol";
+import {Errors} from "src/lib/Errors.sol";
+
+contract PendleUnifiedOracleForkTest is ForkTest {
+    PendleUnifiedOracle oracle;
+    /// @dev 1%
+    uint256 constant REL_PRECISION = 0.01e18;
+
+    function setUp() public {
+        _setUpFork(23238500);
+        oracle = new PendleUnifiedOracle(PENDLE_ORACLE);
+    }
+
+    /// @dev This market is active. 1 PT-sUSDe0925 = 0.8314 SY-sUSDe. Oracle has no slippage.
+    function test_GetQuote_ActiveMarket_sUSDe0925_PT_SY() public {
+        oracle.addPair(
+            PENDLE_ETHENA_SUSDE_0925_MARKET, PENDLE_ETHENA_SUSDE_0925_PT, PENDLE_ETHENA_SUSDE_0925_SY, 15 minutes
+        );
+
+        uint256 outAmount = oracle.getQuote(1e18, PENDLE_ETHENA_SUSDE_0925_PT, PENDLE_ETHENA_SUSDE_0925_SY);
+        uint256 outAmount1000 = oracle.getQuote(1000e18, PENDLE_ETHENA_SUSDE_0925_PT, PENDLE_ETHENA_SUSDE_0925_SY);
+        assertApproxEqRel(outAmount, 0.8314e18, REL_PRECISION);
+        assertEq(outAmount1000, outAmount * 1000);
+
+        uint256 outAmountInv = oracle.getQuote(outAmount, PENDLE_ETHENA_SUSDE_0925_SY, PENDLE_ETHENA_SUSDE_0925_PT);
+        assertEq(outAmountInv, 1e18);
+        uint256 outAmountInv1000 =
+            oracle.getQuote(outAmount1000, PENDLE_ETHENA_SUSDE_0925_SY, PENDLE_ETHENA_SUSDE_0925_PT);
+        assertEq(outAmountInv1000, 1000e18);
+    }
+
+    /// @dev This market is active. 1 PT-sUSDe0925 = 0.9911 USDe.
+    function test_GetQuote_ActiveMarket_sUSDe0925_PT_Asset() public {
+        oracle.addPair(PENDLE_ETHENA_SUSDE_0925_MARKET, PENDLE_ETHENA_SUSDE_0925_PT, USDE, 15 minutes);
+
+        uint256 outAmount = oracle.getQuote(1e18, PENDLE_ETHENA_SUSDE_0925_PT, USDE);
+        uint256 outAmount1000 = oracle.getQuote(1000e18, PENDLE_ETHENA_SUSDE_0925_PT, USDE);
+        assertApproxEqRel(outAmount, 0.9911e18, REL_PRECISION);
+        assertEq(outAmount1000, outAmount * 1000);
+
+        uint256 outAmountInv = oracle.getQuote(outAmount, USDE, PENDLE_ETHENA_SUSDE_0925_PT);
+        assertEq(outAmountInv, 1e18);
+        uint256 outAmountInv1000 = oracle.getQuote(outAmount1000, USDE, PENDLE_ETHENA_SUSDE_0925_PT);
+        assertEq(outAmountInv1000, 1000e18);
+    }
+
+    /// @dev This market is active. 1 LP-sUSDe0925 = 2.78426 USDe
+    function test_GetQuote_ActiveMarket_sUSDe0925_LP_Asset() public {
+        oracle.addPair(PENDLE_ETHENA_SUSDE_0925_MARKET, PENDLE_ETHENA_SUSDE_0925_MARKET, USDE, 15 minutes);
+
+        uint256 outAmount = oracle.getQuote(1e18, PENDLE_ETHENA_SUSDE_0925_MARKET, USDE);
+        uint256 outAmount1000 = oracle.getQuote(1000e18, PENDLE_ETHENA_SUSDE_0925_MARKET, USDE);
+        assertApproxEqRel(outAmount, 2.78426e18, REL_PRECISION);
+        assertEq(outAmount1000, outAmount * 1000);
+
+        uint256 outAmountInv = oracle.getQuote(outAmount, USDE, PENDLE_ETHENA_SUSDE_0925_MARKET);
+        assertEq(outAmountInv, 1e18);
+        uint256 outAmountInv1000 = oracle.getQuote(outAmount1000, USDE, PENDLE_ETHENA_SUSDE_0925_MARKET);
+        assertEq(outAmountInv1000, 1000e18);
+    }
+
+    /// @dev This market is active. 1 LP-sUSDe0925 = 2.3353 SY-sUSDe. Oracle has no slippage.
+    function test_GetQuote_ActiveMarket_sUSDe0925_LP_SY() public {
+        oracle.addPair(
+            PENDLE_ETHENA_SUSDE_0925_MARKET, PENDLE_ETHENA_SUSDE_0925_MARKET, PENDLE_ETHENA_SUSDE_0925_SY, 15 minutes
+        );
+
+        uint256 outAmount = oracle.getQuote(1e18, PENDLE_ETHENA_SUSDE_0925_MARKET, PENDLE_ETHENA_SUSDE_0925_SY);
+        uint256 outAmount1000 = oracle.getQuote(1000e18, PENDLE_ETHENA_SUSDE_0925_MARKET, PENDLE_ETHENA_SUSDE_0925_SY);
+        assertApproxEqRel(outAmount, 2.3353e18, REL_PRECISION);
+        assertEq(outAmount1000, outAmount * 1000);
+
+        uint256 outAmountInv = oracle.getQuote(outAmount, PENDLE_ETHENA_SUSDE_0925_SY, PENDLE_ETHENA_SUSDE_0925_MARKET);
+        assertEq(outAmountInv, 1e18);
+        uint256 outAmountInv1000 =
+            oracle.getQuote(outAmount1000, PENDLE_ETHENA_SUSDE_0925_SY, PENDLE_ETHENA_SUSDE_0925_MARKET);
+        assertEq(outAmountInv1000, 1000e18);
+    }
+}