/** Web chat: max files per user message (keep in sync with `web` MAX_CHAT_ATTACHMENTS). */
export declare const MAX_CHAT_ATTACHMENTS = 10;
/**
 * Max raw bytes per attachment in web chat (keep in sync with `web` MAX_WEBCHAT_ATTACHMENT_FILE_BYTES).
 * JSON requests send base64 (`data`); gateway body limit must allow worst-case payload.
 */
export declare const MAX_WEBCHAT_ATTACHMENT_FILE_BYTES: number;
/** Upper bound for `POST /api/agent` JSON body when every slot is a max-sized binary attachment (base64 ~4/3). */
export declare function maxWebchatAgentRequestBodyBytes(): number;
