ROS1 wrapper for (OpenAI Python Library)[https://pypi.org/project/openai/].
Start from sample lamuch file
$ export OPENAI_API_KEY="xxxxxxxxx"
$ roslaunch openai_ros openai.launch max_tokens:=256 model:=text-davinch-003
or put following code within your launch file.
<group ns="openai">
<node pkg="openai_ros" type="openai_node.py" name="openai" output="screen">
<rosparam command="load" file="openai_credentials.json" />
</node>
</group>
The contents of openai_credentials.json file is something like
key: xxxxxxxxx
max_tokens: 256
model: text-davinci-003
$ rosservice call /openai/get_response '{prompt: "Write a poem about OpenAI"}'