/**
 * OpenAI Chat Completions-compatible backend (DeepSeek, etc.).
 *
 * DeepSeek: base URL + `/chat/completions`, Bearer key — see
 * https://api-docs.deepseek.com/
 *
 * Tool schemas in Vibn are authored for Gemini (uppercase type enums).
 * We normalize them to JSON Schema before sending.
 */
import type { ChatMessage, ToolCall, ToolDefinition } from "./gemini-chat";
/**
 * Non-streaming chat + tool calls — mirrors {@link callGeminiChat} return shape.
 */
export declare function callOpenAiCompatibleChat(opts: {
    systemPrompt: string;
    messages: ChatMessage[];
    tools?: ToolDefinition[];
    temperature?: number;
    /** Unused for OpenAI-compat; kept for call-site symmetry */
    includeThoughts?: boolean;
}): Promise<{
    text: string;
    thoughts: string;
    toolCalls: ToolCall[];
    finishReason?: string;
    error?: string;
}>;
