import { type ConversationProtocolVersion } from './version.js';
export type ConversationMessageRole = 'assistant' | 'developer' | 'system' | 'tool' | 'user';
export type ConversationJsonValue = string | number | boolean | null | ConversationJsonValue[] | {
    [key: string]: ConversationJsonValue;
};
export type ConversationA2UIEventSource = {
    itemId: string;
    surfaceId: string;
    catalogId?: string;
    componentId: string;
    componentName: string;
    instanceIndex?: number;
    cardRef?: string;
    cardRevision?: string;
    cardInstanceId?: string;
};
export type ConversationA2UIEventContent = {
    type: 'a2ui.event';
    invocationId: string;
    displayText?: string;
    event: {
        name: string;
        payload: Record<string, ConversationJsonValue>;
    };
    source: ConversationA2UIEventSource;
};
export type ConversationMessageContent = string | ConversationA2UIEventContent;
export type ConversationMessage = {
    id: string;
    role: ConversationMessageRole;
    content?: ConversationMessageContent;
    name?: string;
};
export type ConversationAttachment = {
    id: string;
    resourceId?: string;
    name: string;
    mimeType: string;
    size?: number;
    url?: string;
    metadata?: Record<string, unknown>;
};
export type ConversationRunRequest = {
    protocolVersion: ConversationProtocolVersion;
    agentId?: string;
    threadId: string;
    runId: string;
    messages: ConversationMessage[];
    attachments: ConversationAttachment[];
    metadata: Record<string, unknown>;
    resumeFrom?: string;
};
export type CreateConversationRunRequestInput = Omit<ConversationRunRequest, 'attachments' | 'metadata' | 'protocolVersion'> & {
    attachments?: ConversationAttachment[];
    metadata?: Record<string, unknown>;
};
export declare class ConversationProtocolValidationError extends Error {
    readonly issues: string[];
    readonly code = "CONVERSATION_PROTOCOL_INVALID";
    constructor(issues: string[]);
}
export declare function createConversationRunRequest(input: CreateConversationRunRequestInput): ConversationRunRequest;
export declare function parseConversationRunRequest(value: unknown): ConversationRunRequest;
export declare function isConversationRunRequest(value: unknown): value is ConversationRunRequest;
export declare function getConversationRunRequestIssues(value: unknown): string[];