Simon Willison • 12/17/2025

s3-credentials 0.17

The article details the release of s3-credentials CLI tool version 0.17. It introduces new commands for getting and setting S3 bucket policies and public access blocks. The key new feature is a 'localserver' command that starts a local web server to provide time-limited AWS credentials via a JSON API, useful for testing and integrating with services like Litestream. The update is technical and focused on a developer tool for managing AWS S3 access.

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#Python #aws s3 #CLI Tool