/**
 * Token Usage API router for /api/tokens endpoints
 *
 * Tracks token usage per channel/agent and provides summary endpoints.
 * Uses mama-sessions.db for storage.
 */
import { Router } from 'express';
import type { SQLiteDatabase } from '../sqlite.js';
/**
 * Token usage record for insertion
 */
export interface TokenUsageRecord {
    channel_key: string;
    agent_id?: string;
    agent_version?: number;
    input_tokens: number;
    output_tokens: number;
    cache_read_tokens?: number;
    cost_usd?: number;
}
/**
 * Initialize token_usage table in the sessions database
 */
export declare function initTokenUsageTable(db: SQLiteDatabase): void;
/**
 * Insert a token usage record
 */
export declare function insertTokenUsage(db: SQLiteDatabase, record: TokenUsageRecord): void;
/**
 * Create token usage API router
 */
export declare function createTokenRouter(db: SQLiteDatabase): Router;
//# sourceMappingURL=token-handler.d.ts.map