Inconsistency with retrieving budget tags API?

[mmacdermaidsap]

You can create budgets via:
https://github.com/aws/aws-sdk-go-v2/blob/main/service/budgets/api_op_CreateBudget.go#L28-L41

CreateBudgetInput has an input variable for tags:
https://github.com/aws/aws-sdk-go-v2/blob/main/service/budgets/api_op_CreateBudget.go#L65

But when describing budgets from the API:
https://github.com/aws/aws-sdk-go-v2/blob/main/service/budgets/api_op_DescribeBudget.go#L20

The budget object you get has no tags associated with the output:
https://github.com/aws/aws-sdk-go-v2/blob/main/service/budgets/types/types.go#L154

This leads you to ListTagsForResource in budgets:
https://github.com/aws/aws-sdk-go-v2/blob/main/service/budgets/api_op_ListTagsForResource.go#L15

But it takes an ARN for the input:
https://github.com/aws/aws-sdk-go-v2/blob/main/service/budgets/api_op_ListTagsForResource.go#L35

Budgets don't have an arn exposed anywhere? What am I missing?

[mmacdermaidsap]

I can't find any budget arns exposed in the UI in the billing console, but luckily it seems they do follow similar ARN formats of other resources.

arn:aws:budgets::ACCOUNT_ID:budget/BUDGET_NAME

Will give you the budget you are looking for and its tags vai the ListTagsForResource API.