/**
 * Leaper Agent – Send-Message Tool (tools/send-message.ts)
 *
 * Cross-channel messaging: Telegram Bot API, Discord webhooks, Slack webhooks.
 * Translates Python tools/send_message_tool.py.
 * Uses proxyFetch() (available in Node 18+) with exponential-backoff retry.
 */
export type Platform = 'telegram' | 'discord' | 'slack';
export interface SendOptions {
    /** 'markdown' | 'html' – Telegram only; Discord/Slack use their own markup. */
    parseMode?: 'markdown' | 'html';
    /** Local file path to attach as media. */
    mediaPath?: string;
    /** Thread ID (Discord threads) or Telegram message thread ID for forum topics. */
    threadId?: string;
}
export interface SendResult {
    success: boolean;
    platform: string;
    messageId?: string;
    error?: string;
}
export interface ChannelInfo {
    platform: Platform;
    chatId: string;
    name: string;
    threadId?: string;
}
/**
 * Execute fn with exponential-backoff retry.
 * Retries on any thrown error or on HTTP 429/502/503/504 responses.
 */
export declare function withRetry<T>(fn: () => Promise<T>, maxAttempts?: number, baseDelayMs?: number): Promise<T>;
/** Replace credential-like query params and JSON fields with ***. */
export declare function sanitizeErrorText(text: string): string;
/**
 * Parse a target string into {platform, chatId, threadId?}.
 *
 * Accepted formats:
 *   "telegram:-1001234567890"
 *   "telegram:-1001234567890:17585"   (with thread/topic ID)
 *   "discord:#general"
 *   "slack:#channel-name"
 */
export declare function parseTarget(target: string): {
    platform: Platform;
    chatId: string;
    threadId?: string;
} | null;
/**
 * Return the list of channels configured via environment variables.
 */
export declare function listChannels(): ChannelInfo[];
/**
 * Send a message to any supported platform.
 */
export declare function sendMessage(platform: Platform, chatId: string, message: string, opts?: SendOptions): Promise<SendResult>;
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