/**
 * Browser-safe wrapper for spawning one persisted Agents Server agent.
 *
 * This function proxies requests to the Agents Server `/api/spawn-agent` endpoint.
 *
 * @param args Tool payload forwarded to server-side `spawn_agent` tool.
 * @param agentsServerUrl Optional explicit agents server base URL.
 * @returns JSON string with structured spawn result.
 *
 * @private internal utility for USE SPAWN commitment
 */
export declare function spawnAgentViaBrowser(args: Record<string, unknown>, agentsServerUrl?: string): Promise<string>;