The error message you're seeing indicates that there is an issue with the format of the X-Auth-Key header in your request to the Cloudflare API. Here are some steps you can take to resolve this issue:

Verify API Key and Headers:

Ensure that your API key and email are correct and properly formatted.
The headers should be set correctly in your request. The X-Auth-Key header should contain your API key, and the X-Auth-Email header should contain your Cloudflare email.
Sample Request:
Here is a sample request to create a DNS record using the Cloudflare API. Make sure your code follows this structure:
import requests

url = "https://api.cloudflare.com/client/v4/zones/YOUR_ZONE_ID/dns_records"
headers = {
"X-Auth-Email": "YOUR_EMAIL",
"X-Auth-Key": "YOUR_API_KEY",
"Content-Type": "application/json"
}
data = {
"type": "A",
"name": "example.com",
"content": "192.0.2.1",
"ttl": 120,
"proxied": False
}

response = requests.post(url, headers=headers, json=data)
print(response.status_code)
print(response.json())
Check the X-Auth-Key Header Format:

Ensure that the API key is a string and not an integer or any other type. It should be passed as a string in the X-Auth-Key header.
Debugging:

Add print statements to check the headers before sending the request.
print(headers)
response = requests.post(url, headers=headers, json=data)
print(response.status_code)
print(response.json())
Environment Variables:
If you are using environment variables to store the API key and email, make sure they are correctly loaded and not empty.
import os

CF_API_EMAIL = os.getenv("CF_API_EMAIL")
CF_API_KEY = os.getenv("CF_API_KEY")

if not CF_API_EMAIL or not CF_API_KEY:
print("Environment variables for Cloudflare API are not set properly")
else:
headers = {
"X-Auth-Email": CF_API_EMAIL,
"X-Auth-Key": CF_API_KEY,
"Content-Type": "application/json"
}

Continue with your request

Check for Special Characters:
Ensure that there are no special characters or spaces in the API key and email.
By following these steps, you should be able to identify and resolve the issue with the X-Auth-Key header format in your request to the Cloudflare API. If you still face issues, consider seeking help from experts in custom software development, maybe they can help you https://tech-stack.com/