This builds custom AMIs using Packer's amazon-ebs builder, which is what you want when you need reproducible EC2 images instead of clicking through the AWS console. The skill covers the full workflow from basic templates to multi-region copying, with ready-to-use source AMI filters for Ubuntu and Amazon Linux. One thing to know upfront is that each build spins up actual EC2 instances and takes 10-30 minutes, so you're paying for that compute time. The authentication setup is straightforward since it uses standard AWS credential resolution, and the troubleshooting section addresses the usual SSH timeout headaches.
npx skills add https://github.com/hashicorp/agent-skills --skill aws-ami-builder