curl --request POST \
  --url http://localhost:3001/api/agents/accomplish/preview \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "goal": "<string>",
  "context": {}
}
'

{
  "success": true,
  "preview": {},
  "flowspec": {},
  "reasoning": "<string>"
}