/**
 * Status of the agent output being rendered.
 *
 * `streaming` covers partial/in-progress content, which has not reached any outcome yet and so must not
 * claim success. `success`/`error` are terminal outcomes known to the caller.
 */
export type AcpOutputState = "streaming" | "success" | "error";
export declare function renderAgentMessage(text: string, state?: AcpOutputState): void;
export declare function renderToolStart(kind: string, title: string): void;
export declare function renderToolComplete(kind: string): void;
export declare function renderReasoning(text: string): void;
export declare function renderUsage(tokens: {
    input: number;
    output: number;
    cached?: number;
    costUsd?: number;
}): void;
export declare function renderPermissionRejected(title: string): void;
export declare function renderError(message: string): void;