Variable: MarketplaceIndexSchema

const MarketplaceIndexSchema: TObject<{ expires: TString; extensions: TArray<TObject<{ author: TObject<{ name: TString; url: TOptional<TString>; }>; homepage: TString; id: TString; license: TString; name: TString; review: TUnion<[TLiteral<"official">, TLiteral<"reviewed">]>; screenshots: TOptional<TArray<TObject<{ caption: TString; url: TString; }>>>; signer: TString; summary: TString; versions: TArray<TObject<{ capabilities: TArray<TString>; hosts: TArray<TString>; minYapYap: TString; notes: TOptional<TString>; published: TString; sha256: TString; size: TInteger; version: TString; }>>; }>>; format: TLiteral<1>; generated: TString; revoked: TArray<TObject<{ id: TString; reason: TString; signer: TString; versions: TUnion<[TLiteral<"*">, TArray<TString>]>; }>>; serial: TInteger; }>

The extension marketplace's index (ADR 0014): the official and reviewed extensions, each version's archive hash, and the versions pulled since. YapYap trusts it only with a valid signature from a first-party key, a serial no lower than the last one it accepted, and an unexpired expires.