/** OpenAI chat completion 请求体（代理实际使用的字段） */
export interface ChatCompletionRequest {
    model: string;
    messages: ChatCompletionMessage[];
    stream?: boolean;
    temperature?: number;
    max_tokens?: number;
    tools?: ToolDefinition[];
    tool_choice?: ToolChoice;
}
export interface ChatCompletionMessage {
    role: 'system' | 'user' | 'assistant' | 'tool';
    content: string | ContentBlock[];
    tool_call_id?: string;
    tool_calls?: ToolCall[];
}
export type ContentBlock = {
    type: 'text';
    text: string;
} | {
    type: 'image_url';
    image_url: {
        url: string;
    };
};
export interface ToolDefinition {
    type: 'function';
    function: {
        name: string;
        description?: string;
        parameters?: Record<string, unknown>;
    };
}
export type ToolChoice = 'auto' | 'none' | {
    type: 'function';
    function: {
        name: string;
    };
};
export interface ToolCall {
    id: string;
    type: 'function';
    function: {
        name: string;
        arguments: string;
    };
}
/** OpenAI chat completion 非流式响应 */
export interface ChatCompletionResponse {
    id: string;
    object: 'chat.completion';
    created: number;
    model: string;
    choices: ChatCompletionChoice[];
    usage?: UsageInfo;
}
export interface ChatCompletionChoice {
    index: number;
    message: ChatCompletionResponseMessage;
    finish_reason: string | null;
}
export interface ChatCompletionResponseMessage {
    role: 'assistant';
    content: string | null;
    reasoning_content?: string;
    plugins_content?: string;
    tool_calls?: ToolCall[];
}
/** OpenAI chat completion 流式 chunk */
export interface ChatCompletionChunk {
    id: string;
    object: 'chat.completion.chunk';
    created: number;
    model: string;
    choices: ChatCompletionChunkChoice[];
    usage?: UsageInfo;
}
export interface ChatCompletionChunkChoice {
    index: number;
    delta: {
        role?: string;
        content?: string;
        tool_calls?: ToolCall[];
    };
    finish_reason: string | null;
}
export interface UsageInfo {
    prompt_tokens: number;
    completion_tokens: number;
    total_tokens: number;
}
export declare function isChatCompletionRequest(value: unknown): value is ChatCompletionRequest;
export declare function isChatCompletionResponse(value: unknown): value is ChatCompletionResponse;
export declare function isUsageInfo(value: unknown): value is UsageInfo;
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