This handles the full diagnostic spectrum for Amazon S3 Files, from mount failures and security group misconfigurations to IAM permission errors and sync problems. It's structured as a decision tree that classifies symptoms into nine categories, then walks through fixes with actual commands. The most useful part is probably the security group troubleshooting, since connection timeouts are apparently the number one mount failure. It also covers the less obvious gotchas like file systems stuck in "creating" status due to bad IAM roles, and why DNS resolution fails in VPCs. Good for anyone running S3 Files in production who needs to debug issues methodically rather than guessing.
npx skills add https://github.com/aws/agent-toolkit-for-aws --skill troubleshooting-s3-files