export type AgentTaskArtifact = {
    path: string;
    displayName: string;
    thread_id: string;
    updated_at: string;
    source: 'artifact' | 'file_change';
};
export type AgentArtifactApiEntry = {
    mime_type: string;
    displayName: string;
    thread_id: string;
    task_id: string;
    updated_at: string;
    source: AgentTaskArtifact['source'];
    size?: number;
    mtimeMs?: number;
};
export declare function resolveArtifactLocalFileStats(artifactPath: string, baseDir: string): {
    size?: number;
    mtimeMs?: number;
};
/** Index task-linked artifacts from thread UI events and Codex JSONL history. */
export declare function listAgentTaskArtifacts(agentId: string, maxEntries?: number): AgentTaskArtifact[];
export declare function buildAgentArtifactsApiResponse(agentId: string, baseDir: string, inferMime: (filePath: string) => string): Record<string, AgentArtifactApiEntry>;
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