import { AgentCredits, Purchase, UsageRecord } from './types.js';
type StorageBackend = 'memory' | 'convex';
/**
 * Get or create agent credits account
 */
export declare function getAgentCredits(agentId: string): AgentCredits;
/**
 * Add credits to an agent's account
 */
export declare function addCredits(agentId: string, amountUsd: number): AgentCredits;
/**
 * Purchase API access
 * Returns real credentials for 46elks and Twilio
 */
export declare function purchaseAPIAccess(agentId: string, providerId: string, amountUsd: number): {
    success: boolean;
    purchase?: Purchase;
    error?: string;
};
/**
 * Get all purchases for an agent
 */
export declare function getAgentPurchases(agentId: string): Purchase[];
/**
 * Get usage for a purchase
 */
export declare function getUsage(purchaseId: string): UsageRecord | null;
/**
 * Record usage (call this when API is used)
 */
export declare function recordUsage(purchaseId: string, unitsUsed: number, costUsd: number): UsageRecord | null;
/**
 * Get full balance summary for an agent
 */
export declare function getBalanceSummary(agentId: string): {
    credits: AgentCredits;
    active_purchases: Purchase[];
    total_spent_usd: number;
    real_credentials_available: string[];
};
/**
 * Check which providers have real credentials
 */
export declare function getProvidersWithRealCredentials(): string[];
export declare function getAgentCreditsAsync(agentId: string): Promise<AgentCredits | null>;
export declare function addCreditsAsync(agentId: string, amountUsd: number): Promise<AgentCredits | null>;
export declare function purchaseAPIAccessAsync(agentId: string, providerId: string, amountUsd: number): Promise<{
    success: boolean;
    purchase?: Purchase;
    error?: string;
}>;
export declare function getBackendInfo(): {
    type: StorageBackend;
    convexUrl: string | null;
};
export {};
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