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Sweep 27 Oct 2026 · 19:04Z Build v2.1.312 531 read Stable v2.1.308 Latest v2.1.312 Next v2.1.312 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.311 ·

A tool's permission check and run step now load on demand

One tool's permission check and its run step are now loaded only when they are first needed

Under the hood Internal Changes
JSON All of v2.1.311
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
PerformanceArea: what it touches
Internal ChangesKind: in v2.1.311,
Internal ChangesSection of the release
What

For one of Claude Code's tools, the code that checks permissions and the code that runs the tool are now loaded only when they are first used, rather than being part of the main program from the start.

Why

This is a change to how the program loads, not to what the tool does.

See this entry in the whole of v2.1.311 →

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