import type { ToolContent } from '@nest-mcp/common';
export type ResponseTransformFn = (response: ToolCallResponse) => ToolCallResponse | Promise<ToolCallResponse>;
export interface ToolCallResponse {
    toolName: string;
    upstreamName: string;
    content: ToolContent[];
    isError?: boolean;
}
export declare class ResponseTransformService {
    private readonly logger;
    private readonly transforms;
    register(transform: ResponseTransformFn): void;
    apply(initial: ToolCallResponse): Promise<ToolCallResponse>;
}
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