Variable GATEWAY_FEATURES`Const`

GATEWAY_FEATURES: {
    CUSTOM_PROTOCOL_FEE: 4;
    NET_AMOUNT: 2;
    PERMISSIONLESS: 8;
    REFERRAL: 1;
} = ...

Gateway feature flag bit positions. Bit-vector stored in PaymentGateway.feature_flags (u8).

ReadonlyCUSTOM_PROTOCOL_FEE: 4
Bit 2: Custom protocol fee enabled — overrides default 100 bps (1 = enabled)
ReadonlyNET_AMOUNT: 2
Bit 1: Net amount mode — recipient receives exactly payment_amount, fees added on top (1 = net)
ReadonlyPERMISSIONLESS: 8
Bit 3: Permissionless composable execution enabled (ADR-0016). Frozen at gateway creation — cannot be toggled via update_gateway_feature_flags. When set, executeComposable admits any signer for CONFORMING composable policies (post_validation or route pinned). The trusted three (gateway signer / owner / recipient) always pass regardless.
ReadonlyREFERRAL: 1
Bit 0: Referral program enabled (1 = enabled)

Variable GATEWAY_FEATURESConst