import type { EvalRecord } from "../eval/types.js";
import type { EventEnvelope } from "../statelog/wireTypes.js";
import type { Trace } from "./traces.js";
/**
 * A trace's input and output as text, for anything that shows a trace to a
 * person: the labeling screen, `agency runs list`, the "pick a trace" error.
 * One rule for what "the input" and "the output" of a trace are, so every
 * command shows the same thing.
 */
/** The input as text: what `agentStart` recorded when the caller named it,
 *  else the last `evalValue()` (or the extractor's inferred user message);
 *  null when the trace recorded neither. */
export declare function traceInputText(trace: {
    events: readonly EventEnvelope[];
}, record: EvalRecord): string | null;
export type TraceOutputText = 
/** The last recorded output (`evalOutput()` or the entry node's return). */
{
    kind: "output";
    text: string;
}
/** No output was recorded; this is the last assistant message instead. */
 | {
    kind: "lastMessage";
    text: string;
} | {
    kind: "none";
};
export declare function traceOutputText(trace: Trace, record: EvalRecord): TraceOutputText;