curl --request GET \
  --url https://api.b-bot.space/v2/threads/{thread_id}/state/{checkpoint_id}

{
  "values": [
    {}
  ],
  "next": [
    "<string>"
  ],
  "tasks": [
    {
      "id": "<string>",
      "name": "<string>",
      "error": "<string>",
      "interrupts": [
        "<any>"
      ],
      "checkpoint": {
        "thread_id": "<string>",
        "checkpoint_ns": "<string>",
        "checkpoint_id": "<string>",
        "checkpoint_map": {}
      },
      "state": {}
    }
  ],
  "checkpoint": {
    "thread_id": "<string>",
    "checkpoint_ns": "<string>",
    "checkpoint_id": "<string>",
    "checkpoint_map": {}
  },
  "metadata": {},
  "created_at": "<string>",
  "parent_checkpoint": {},
  "interrupts": [
    "<any>"
  ]
}