I can have the api that allows me to display the costs linked to each of my AWS services used ?

Hello,

Per your last question, one of the APIs that was mentioned was the Cost Explorer API here: https://docs.aws.amazon.com/cost-management/latest/userguide/ce-api-best-practices.html

Here is a reference guide for the Cost Explorer API. With this API, you can return the results in JSON format. https://docs.aws.amazon.com/aws-cost-management/latest/APIReference/API_GetCostAndUsage.html

Hi there.
Not sure if the API is a requirement, but if not, you might want to check out the Cost and Usage reports in your Cost Explorer console. Once configured, the service will drop CSV (or Parquet) reports of all the costs incurred in your environment on a daily basis in S3, broken down to every line item from your AWS bill. From there you can access them via Athena, or download them to analyze in depth.
Hope this helps