acm

Hey @thrau, no worries. What I mean is to make request against an actual OpeanSearch cluster you need to use auth (IAM AWS SigV4): https://docs.aws.amazon.com/opensearch-service/latest/developerguide/request-signing.html. What the library I linked...

Hardcoding it is not really bad as long as they don't provide it. Regions are hardcoded in the AWS client for example: https://github.com/hashicorp/aws-sdk-go-base/blob/main/internal/endpoints/endpoints.go and https://github.com/aws/aws-sdk-go/blob/main/models/endpoints/endpoints.json. It'd be possible to automatically...