import type { ToolCall, ToolResult } from '../providers/anthropic-direct/types.js';
export declare const REPEAT_FAILURE_REFUSAL_THRESHOLD = 3;
export interface RepeatFailureVerdict {
    readonly result: ToolResult;
    readonly count: number;
    readonly tool: string;
}
export declare function repeatFailureFingerprint(call: ToolCall): string;
export declare class RepeatFailureGuard {
    private readonly streaks;
    check(call: ToolCall): RepeatFailureVerdict | null;
    note(call: ToolCall, result: ToolResult): void;
    streakFor(call: ToolCall): number;
}