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SenderModule

Source: contracts/src/stdlib/SenderModuleV2.sol

What it does​

SenderModuleV2 restricts a portal to an allowlist of transaction senders.

mapping(address portal => mapping(address sender => bool authorized))
  public authorizedSenders;

The module checks initialCaller, meaning the original transaction sender passed by the portal workflow.

Portal-owner configuration​

function setAuthorizedSenders(address portal, address[] calldata senders, bool[] calldata authorizedStatus) public;

Only the portal owner can update the allowlist for that portal.

Good fit when​

  • only a backend relayer or privileged account should issue through the portal;
  • you want simple sender-based access control without signatures.