SIP-2007 proposes providing the below multisigs, controlled by a subset of the members of PDAO & Core-Contributors, direct integration privileges, allowing them to perform exchanges between sUSD and sETH at 0 fees:
On Optimism 0x3cbaB31E655529Ba3CeFfdf79C97bbF3afEB831D On Ethereum 0x8d8010ea725746b76baffa20968ecb0a5b2cc247