/** Minimal subset of OTel Span interface */
export interface SpanLike {
    setAttribute(key: string, value: unknown): this;
    setStatus(status: {
        code: number;
        message?: string;
    }): this;
    recordException(err: Error): void;
    end(): void;
}
/** Minimal subset of OTel Tracer interface */
export interface TracerLike {
    startSpan(name: string, options?: unknown): SpanLike;
}
export declare class ONITracer {
    private readonly tracer;
    constructor(tracer: TracerLike | null);
    startGraphSpan(operation: string, opts: {
        threadId: string;
        agentId?: string;
    }): SpanLike;
    startNodeSpan(nodeName: string, opts: {
        threadId: string;
        step: number;
        agentId?: string;
    }): SpanLike;
    startToolSpan(toolName: string, opts: {
        threadId: string;
        step: number;
    }): SpanLike;
    startCheckpointSpan(operation: string, opts: {
        threadId: string;
    }): SpanLike;
    startModelSpan(provider: string, modelId: string, opts: {
        threadId: string;
        step: number;
    }): SpanLike;
    recordError(span: SpanLike, error: Error): void;
    endSpan(span: SpanLike): void;
}
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