Are all AWS Secrets Manager API calls billed ?

Hello,

The AWS Secrets Manager pricing page says that it costs 0.05$ per 10000 API calls. Does this apply to all operations on Secrets Manager ? I have a Lambda function that needs to do the ListSecretVersionIds operation on a secret, and I was wondering if these calls are billed or if it applies only to operations like GetSecretValue, CreateSecret, DeleteSecret, UpdateSecret.

Thank you