Function resolvePreviewUrl

examples/sandbox-web/src/sandbox-agent.ts:475–482

(
  definition: SandboxDefinition,
  threadId: string,
)

 * so the host resolves it and feeds it into the system prompt.
 */
export async function resolvePreviewUrl(
  definition: SandboxDefinition,
  threadId: string,
): Promise<string> {
  const handle = await definition.ensure({ threadId, runId: 'resolve-preview' })
  const channel = await handle.ports.connect(PREVIEW_PORT)
  return channel.url
}