import type { TraceEntry, SessionMetadata } from './types.js';
/** Omit timestamp — it's auto-filled by record() */
type TraceInput = Omit<TraceEntry, 'timestamp'>;
/**
 * In-memory session trace. Records MCP tool calls in a ring buffer.
 * Nothing is written to disk until explicitly exported.
 */
export declare class SessionTrace {
    private buffer;
    private metadata;
    constructor(serverVersion: string, capacity?: number);
    record(input: TraceInput): void;
    getEntries(): TraceEntry[];
    getErrorEntries(): TraceEntry[];
    getMetadata(): SessionMetadata;
    updateScenario(dir: string): void;
}
export {};
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