export interface TraceSpan {
    setAttribute(key: string, value: string | number | boolean): void;
    addEvent(name: string, attributes?: Record<string, string | number | boolean>): void;
    setStatus(ok: boolean, message?: string): void;
    end(): void;
}
export interface Tracer {
    startSpan(name: string, attributes?: Record<string, string | number | boolean>, parent?: TraceSpan): TraceSpan;
}
export declare class TraceRegistry {
    private tracer;
    private redactor;
    setTracer(tracer: Tracer | 'console'): void;
    setTraceRedactor(fn: (text: string) => string): void;
    getTracer(): Tracer;
    redactMessage(text: string): string;
}
export declare function setTracer(tracer: Tracer | 'console'): void;
export declare function setTraceRedactor(fn: (text: string) => string): void;
export declare function getTracer(): Tracer;
export declare function withSpan<T>(name: string, attributes: Record<string, string | number | boolean> | undefined, fn: (span: TraceSpan) => Promise<T>, parent?: TraceSpan): Promise<T>;
export declare function turnAttributes(runId: string, turn: number, model: string): Record<string, string | number | boolean>;
export declare function toolAttributes(runId: string, toolName: string, toolCallId: string): Record<string, string | number | boolean>;
export declare function llmRequestAttributes(runId: string, model: string, inputTokens: number): Record<string, string | number | boolean>;
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