import type { ProviderConfig, ProviderMessage } from "./types.js";
/**
 * Runs one provider chat completion without exposing tools.
 *
 * @param params - Provider configuration, messages, and optional cancellation
 * signal.
 * @returns The assistant's final text.
 * @throws {@link LlmRequestError} when the provider rejects the HTTP request.
 */
export declare function completeChat(params: {
    config: ProviderConfig;
    messages: ProviderMessage[];
    signal?: AbortSignal;
}): Promise<string>;
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