export declare const AGENT_TRACE_SCHEMA_VERSION = 4;
export declare const AGENT_SPAN_NAMES: {
    readonly action: "agent.action";
    readonly approval: "agent.approval";
    readonly channelRequest: "agent.channel.request";
    readonly step: "agent.step";
};
export declare const AGENT_USAGE_ATTRIBUTES: {
    readonly inputTokens: "agent.usage.input_tokens";
    readonly outputTokens: "agent.usage.output_tokens";
    readonly cacheReadTokens: "agent.usage.cache_read_tokens";
    readonly cacheWriteTokens: "agent.usage.cache_write_tokens";
};
export declare function agentInvocationSpanName(agentName: string | undefined): string;
export declare function workflowInvocationSpanName(workflowName: string): string;
export interface AgentSamplingOperation {
    readonly name: string;
    readonly attributes?: Readonly<Record<string, string | number | boolean | undefined>>;
}
interface AgentSpanRecord {
    readonly name: string;
    readonly attributes: Readonly<Record<string, unknown>>;
}
export declare function isAgentActivationSpan(span: AgentSpanRecord): boolean;
export declare function agentTurnIdentity(span: AgentSpanRecord): string | undefined;
export {};