export type UsabilityReason = 'balance_ok' | 'balance_below_threshold' | 'probe_ok' | 'probe_failed' | 'manual_available' | 'manual_unavailable' | 'check_failed' | 'unknown';
export interface UsabilityDetails {
    balance?: number;
    currency?: string;
    minBalance?: number;
    httpStatus?: number;
    errorType?: string;
    errorMessage?: string;
    adapter?: string;
}
export interface UsabilityResult {
    profileName: string;
    usable: boolean;
    reason: UsabilityReason;
    checkedAt: string;
    details?: UsabilityDetails;
}
export declare function readStatus(): Record<string, UsabilityResult>;
export declare function getCachedStatus(profileName: string): UsabilityResult | undefined;
export declare function saveStatus(result: UsabilityResult): void;
export declare function isFresh(result: UsabilityResult, ttlSeconds: number, now?: number): boolean;
export declare function runStatus(): number;
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