You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
File ReadingArea: what it touches
ImprovementsKind: in v2.1.310,
ImprovementsSection of the release
What
The Read tool is what Claude uses to open files. Before reading, it now checks the path against a guard for device files (special files that stand for hardware or system streams rather than ordinary content). If the guard objects, the read stops with the message "Read refused by the device guard".
Why
Reading some device paths can hang forever, and this stops Claude from getting stuck on one.
