curl --request POST \
  --url https://api.example.com/api/v1/workspaces/{workspace_id}/sessions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "machine_id": "<string>",
  "user_session_id": "<string>",
  "metadata": {},
  "initial_prompt": "<string>",
  "worktree_name": "<string>",
  "session_settings": {
    "code": {
      "mode": "agent",
      "default_provider": "<string>",
      "providers": {
        "claude_code": {
          "model": "haiku"
        },
        "codex": {
          "model": "gpt-5.1-codex-max",
          "thinking": "low"
        }
      }
    },
    "voice": {
      "language": "<string>"
    }
  },
  "resume_session_id": "<string>",
  "agent_session_id": "<string>"
}
'

{
  "status": "<string>",
  "payload": {}
}