You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Read ToolArea: what it touches
ImprovementsKind: in v2.1.296,
ImprovementsSection of the release
Unclear It is not clear whether allow_large is actually available to Claude yet or held back behind a switch.
What
The Read tool is what Claude uses to open files. When a file is larger than the default limit, Claude Code now has messages that tell Claude what to do next:
call Read again with allow_large: true to read the file anyway
if the file still will not fit in the remaining room in the conversation, read as much as still fits
if allow_large is not available, read the file in parts by choosing where to start and how much to read
The Read tool's own description, as captured under this release, is unchanged from the previous one. Separately, Claude Code now records whether part of the original file was left out when a subagent edits a file. A subagent is a helper Claude starts to work on part of a task.
Why
If the option is available, Claude can get past the size cap on large files instead of stopping at the limit.
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtIt is not clear whether `allow_large` is actually available to Claude yet or held back behind a switch.
Anthropic's release notes agreeAdded an allow_large option to the Read tool so Claude can read a text file past the usual size limits in one call when it needs the whole…
