import type { LlmStreamEvent, ProviderConfig, ProviderMessage, ProviderTool } from "../types.js";
interface ChatParams {
    config: ProviderConfig;
    messages: ProviderMessage[];
    tools?: ProviderTool[];
    signal?: AbortSignal;
}
interface ChatResult {
    text: string;
    toolCalls: {
        id: string;
        name: string;
        args: Record<string, unknown>;
    }[];
}
/** Applies OpenRouter's base URL and attribution headers. */
export declare function withOpenRouterConfig(config: ProviderConfig): ProviderConfig;
export declare function streamChat(params: ChatParams): AsyncGenerator<LlmStreamEvent, void, unknown>;
export declare function chat(params: ChatParams): Promise<ChatResult>;
export {};
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