from meibelai import Meibelai
import os


with Meibelai(
    api_key_header=os.getenv("MEIBELAI_API_KEY_HEADER", ""),
) as m_client:

    res = m_client.blueprints.executions.send_chat_message_stream_blueprint_instance_id_chat_stream_post(blueprint_instance_id="<id>", user_message="<value>", timeout_seconds=290915, include_thinking=False, include_tool_activity=None)

    # Handle response
    print(res)

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}