export interface InboundAttachment {
    url: string;
    mimeType?: string;
}
export interface NormalizedInboundMessage {
    from: string;
    text: string;
    messageId: string;
    attachments: InboundAttachment[];
    isGroup: boolean;
    chatId: string;
    participants: string[];
}
export interface ResolvedInboundRoute {
    sessionKey: string;
    accountId: string;
    agentId?: string;
    mainSessionKey?: string;
    [key: string]: unknown;
}
export type InboundMessageValidation = {
    ok: true;
    message: NormalizedInboundMessage;
} | {
    ok: false;
    reason: string;
};
export type InboundRouteValidation = {
    ok: true;
    route: ResolvedInboundRoute;
} | {
    ok: false;
    reason: string;
};
export declare function isInboundMessageEvent(data: Record<string, unknown>): boolean;
export declare function normalizeInboundMessage(data: Record<string, unknown>): InboundMessageValidation;
export declare function validateInboundRoute(route: unknown): InboundRouteValidation;