Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
One change · claude-docs

Tools and environments changed

claude-science/tools-and-environments

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33> Claude writes and runs Python, R, and shell commands.
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5Claude writes and runs Python, R, and shell commands. Python and R run in a persistent kernel that keeps variables in memory across steps in a session. The kernel ends after about 30 minutes idle, when a package install restarts its environment, or when the session ends.
5Claude writes and runs Python, R, and shell commands (PowerShell on Windows). Python and R run in a persistent kernel that keeps variables in memory across steps in a session. The kernel ends after about 30 minutes idle, when a package install restarts its environment, or when the session ends.
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77## Starter environments
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