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 A tool for creating credentials for accessing S3 buckets
 
+For project background, see [s3-credentials: a tool for creating credentials for S3 buckets](https://simonwillison.net/2021/Nov/3/s3-credentials/) on my blog.
+
 ## ⚠️ Warning
 
 I am not an AWS security expert. You shoud review how this tool works carefully before using it against with own AWS account.