IndexNow script to send batch of URL

indexnow.sh

#!/bin/bash

key="${INDEXNOW_KEY}"
domain=your.domain.com

url_array=()
 
url_list_json=$(printf ', "%s"' "${url_array[@]}")
url_list_json="[ ${url_list_json:2} ]"

json_body=$(cat <<EOF
{
    "host": "${domain}",
    "key": "$key",
    "keyLocation": "https://${domain}/${key}.txt",
    "urlList": $url_list_json
}
EOF
)  
   
content_length=$(echo -n "$json_body" | wc -c)

curl -X POST -H "Content-Type: application/json" \
    -H "Content-Length: $content_length" \
    -d "$json_body" "https://api.indexnow.org/IndexNow" -v