export declare const TELEMETRY_SCHEMA_VERSION: 2;
export type TelemetryOutcome = "ok" | "error" | "cancelled";
export type CorrelationStatus = "exact_trace" | "exact_session" | "evidenced" | "heuristic" | "ambiguous" | "unlinked";
export interface TelemetryIdentity {
    readonly traceId: string;
    readonly "afd.schema.version": typeof TELEMETRY_SCHEMA_VERSION;
    readonly "afd.project.id": string;
    readonly "afd.workspace.id": string;
    readonly "afd.run.id": string;
    readonly "afd.agent.name": string;
    readonly "afd.client.session.id"?: string;
}
export interface TelemetrySpan {
    readonly spanId: string;
    readonly parentSpanId?: string;
    readonly name: string;
    readonly startedAtUnixMs: number;
    readonly endedAtUnixMs: number;
    readonly outcome: TelemetryOutcome;
    readonly attributes?: Readonly<Record<string, string | number | boolean | undefined>>;
}
export declare function redactTelemetryAttributes(attributes?: Readonly<Record<string, string | number | boolean | undefined>>): Readonly<Record<string, string | number | boolean>>;
export declare function newTraceId(): string;
export declare function newSpanId(): string;
export declare function telemetryIdentity(workspace: string, agent: string, secret: Uint8Array, options?: {
    readonly traceId?: string;
    readonly runId?: string;
}): Promise<TelemetryIdentity>;
export declare function buildOtlpJsonTrace(identity: TelemetryIdentity, spans: readonly TelemetrySpan[]): Record<string, unknown>;
export declare function emitLoopbackOtlpJson(endpoint: string, trace: Record<string, unknown>): Promise<void>;
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