Love your project so far! If you don't mind I would love to see you add an other open hash API https://lea.kz/api. There you can query for a md5, sha1, sha224, sha256, sha384, sha512 hash value.
Example API call
curl https://lea.kz/api/hash/e6e7c0a347468dd5cc73712fa53861cb
{
"password": "derrick09"
}