export interface AgentPromptAttachment {
    name: string;
    type?: string;
    size?: number;
    text?: string;
    dataUrl?: string;
}
export declare function escapePromptAttachmentAttribute(value: string): string;
export declare function formatPromptWithAttachments(prompt: string, attachments: readonly AgentPromptAttachment[]): string;
export declare const AGENT_PROMPT_MAX_INLINE_TEXT_CHARS = 60000;
export declare const AGENT_PROMPT_MAX_INLINE_IMAGE_BYTES: number;
export interface ReadAgentPromptAttachmentOptions {
    maxInlineTextChars?: number;
    maxInlineImageBytes?: number;
}
export declare function readAgentPromptAttachment(file: File, options?: ReadAgentPromptAttachmentOptions): Promise<AgentPromptAttachment>;
export declare function isInlineableAgentPromptFile(file: File): boolean;
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