> For the complete documentation index, see [llms.txt](https://mau-eth.gitbook.io/mau/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mau-eth.gitbook.io/mau/account-abstraction/interfaces/entrypoint-interface.md).

# EntryPoint Interface

The core interface of the `EntryPoint` contract is as follows:

```
function handleOps(UserOperation[] calldata ops, address payable beneficiary);

function handleAggregatedOps(
    UserOpsPerAggregator[] calldata opsPerAggregator,
    address payable beneficiary
);

struct UserOpsPerAggregator {
    UserOperation[] userOps;
    IAggregator aggregator;
    bytes signature;
}

function simulateValidation(UserOperation calldata userOp);

error ValidationResult(ReturnInfo returnInfo,
    StakeInfo senderInfo, StakeInfo factoryInfo, StakeInfo paymasterInfo);

error ValidationResultWithAggregation(ReturnInfo returnInfo,
    StakeInfo senderInfo, StakeInfo factoryInfo, StakeInfo paymasterInfo,
    AggregatorStakeInfo aggregatorInfo);

struct ReturnInfo {
  uint256 preOpGas;
  uint256 prefund;
  bool sigFailed;
  uint48 validAfter;
  uint48 validUntil;
  bytes paymasterContext;
}

struct StakeInfo {
  uint256 stake;
  uint256 unstakeDelaySec;
}

struct AggregatorStakeInfo {
    address actualAggregator;
    StakeInfo stakeInfo;
}
```


---

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