Problems creating a DANE record using API

So I’m kinda stuck here.
I am trying to create a script that automatically creates DANE records using the latest Cloudflare Public Key and then publish it using the API.

#!/bin/bash

# Set these variables to your Cloudflare API key and email address
auth_key="your-api-key"
auth_email="your-email-address"

# Set these variables to your Cloudflare account ID and the zone ID for the domain
account_id="your-account-id"
zone_id="your-zone-id"

# Set this variable to the domain name
domain="www.example.com"

# Get the SSL/TLS certificate for the domain
certificate=$(echo | openssl s_client -connect $domain:443 2>/dev/null | openssl x509 -outform PEM)

# Extract the public key from the certificate
public_key=$(echo "$certificate" | openssl x509 -pubkey -noout)

# Encode the public key using base64
encoded_key=$(echo "$public_key" | base64 | tr -d '\n')

# Create the DANE record using the Cloudflare API
curl -X POST "https://api.cloudflare.com/client/v4/zones/$zone_id/dns_records" \
     -H "Content-Type: application/json" \
     -H "X-Auth-Key: $auth_key" \
     -H "X-Auth-Email: $auth_email" \
     -d "{\"type\":\"TLSA\",\"name\":\"_443._tcp.$domain\",\"content\":\"3 1 1 $encoded_key\",\"ttl\":3600}"

I get this response:

{"result":null,"success":false,"errors":[{"code":1004,"message":"DNS Validation Error","error_chain":[{"code":9101,"message":"usage is a required data field."}]}],"messages":[]}

thanks in advance

It sounds like the DNS record you are trying to send is invalid. I would try having curl with more verbose output to see what the DNS record looks like.