All requests to the Visit API must be authenticated with an API key. The API key is used as the username associated with your HTTP calls; password is not required and must be left empty.

While many development environments include helper functions to add the relevant headers from the username and password values, you may also do the following:

1. Base-64 encode your API key
2. Prepend the encoded key with ‘Basic[space]’
3. Set the value of HTTP Authorization header to the result from step 2

Having trouble connecting? Please contact the issuing organization. Possible causes:

• API key has been entered incorrectly
• API key is disabled
• The expiry date of the API key has passed
• The key has not been assigned to the requested event(s)
• IP whitelisting has been applied to restrict access to known IP addresses only