curl --request POST \
  --url https://api.roe-ai.com/v1/agents/{agent_id}/versions/ \
  --header 'Content-Type: application/json' \
  --data '{
  "version_name": "<string>",
  "description": "<string>",
  "input_definitions": "<any>",
  "engine_config": "<any>"
}'

{
  "id": "789e1234-e89b-12d3-a456-426614174002",
  "version_name": "version 2",
  "description": "Updated version with new features",
  "input_definitions": [
    {
      "key": "input_text",
      "description": "Text to process",
      "data_type": "text/plain"
    }
  ],
  "engine_config": {
    "model": "gpt-4",
    "temperature": "0.5"
  },
  "created_at": "2024-01-16T14:20:00Z",
  "readonly": false,
  "engine_class_id": "openai_chat",
  "organization": "org-123e4567-e89b-12d3-a456-426614174000"
}