Calling a list troubles

[giveen]

I'm struggling to get this list from a json file to call correctly, and I was hoping for help. I'm still really new to learning python. I always end up with "TypeError: list indices must be integers or slices, not str"

CONFIG_ITEMS = 'items.json'
with open(CONFIG_ITEMS) as json_data_file:
    config_items = json.load(json_data_file)

def get_value(items:str):
    items = items.replace(" ", "").lower()
    aliases = config_items['aliases']
    if items in aliases:
        return [value[aliases]]
    else:
        return None

The json looks like this:

[
 { 
  "aliases": ["carvedtwine","carved","carvedt","ct"],
  "value": 10
 }
]