OptionalauthToken: stringOptionalpushNotificationConfig: PushNotificationConfigOptionalcustomHeaders: Record<string, string>OptionalsigningContext: AgentSigningContextOptionalsession: A2ASessionIdsOptionalsignal: AbortSignalOptionalrequestTimeoutMs: numberOptionalfetchFn: {Optionalinit: RequestInitOptionalinit: RequestInitOptionalallowPrivateIp: booleanOptionallegacyCompat: A2ALegacyCompatOptions
MDN Reference