import type { Message } from '../core/session/session-jsonl.js';
export interface TailToolSnipConfig {
    hardKeepLatest: number;
    softBand: number;
    maxChars: number;
}
export declare const DEFAULT_TAIL_SNIP_CONFIG: TailToolSnipConfig;
export interface TailToolSnipResult {
    messages: Message[];
    snippedCount: number;
    savedChars: number;
    savedTokens: number;
}
export declare function snipTailOversizedToolResults(messages: Message[], config?: Partial<TailToolSnipConfig>): TailToolSnipResult;
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