Facets

Facets contain the BNB Core Pool Comptroller’s application logic. They are reached through chained delegate calls from the Unitroller and Diamond.

At BNB Chain block 132,749,058, the selector map was as follows. VIP-640 installed the PolicyFacet, RewardFacet, SetterFacet and FlashLoanFacet; VIP-672 replaced the MarketFacet.

Facet	Responsibility	Live address	Reference
MarketFacet	Market membership, account delegation, liquidity and pool views	0x935905A58E91a406eead60cd9AAbC7a64EDAe264	API
PolicyFacet	vToken policy hooks and liquidity checks	0x8930B02c69EDd37464B50991680D306Bb9B8FDBD	API
RewardFacet	XVS accrual, claim and seizure flows	0x9e0CCD70b5E0030472D5013bbBd37B6E868d416f	API
SetterFacet	Risk, oracle, pause, cap, pool and feature configuration	0xbc4885e5A27050E321d094503597aC6734AB1871	API
FlashLoanFacet	Multi-market flash-loan execution	0xAC54A4D148690b7FDA22B1D29c4439aCBF668fb2	API

FacetBase is inherited shared logic and storage, not a separate runtime facet. It defines ComptrollerV19Storage access helpers such as admin-only, admin-or-guardian, and signature-specific Access Control Manager checks.

Danger

Always call facet selectors through the Unitroller. Never send an application call directly to a facet address. Query facetAddress(bytes4) before relying on a selector, because governance can replace or remove individual assignments.