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HomeDocsClaude Code CLI 18 Sep 2026
One change · claude-code

Tools reference changedtools-reference

Nearest release: v2.1.277, published under an hour before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Recorded here
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From line 158 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits87to this page, all time

The whole hunk

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159159Claude Code streams a command's output to a working file as the command runs; a command whose output passes 5 GB is killed. When the command finishes, Claude Code reads the output back from that file, up to the read-back window described below. How much of the output reaches Claude inline depends on whether Claude Code treats the result as a failure:
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161| Result | What Claude gets |
162| :------ | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
163| Valid | Inline up to roughly 30,000 characters by default; past that, the path of a file saved to the session directory and truncated past 64 MiB, plus a short preview from the start, and Claude reads or searches the file when it needs the rest |
164| Failure | Inline up to roughly 10,000 characters; past that, a head-and-tail excerpt of that size cut from the read-back window, with no file path |
161| Result | What Claude gets |
162| :------ | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
163| Valid | Inline up to roughly 30,000 characters by default; past that, the path of a file saved to the session directory and truncated past 64 MiB, plus a preview of up to the first 2,000 characters, and Claude reads or searches the file when it needs the rest |
164| Failure | Inline up to roughly 10,000 characters; past that, a head-and-tail excerpt of that size cut from the read-back window, with no file path |
165165 
166166A command that exits 1 counts as a valid result for the Bash tool only when Claude Code recognizes exit code 1 as a benign outcome for that command: `grep`, `rg`, `egrep`, `fgrep`, `find`, `diff`, `test`, and `[`, plus `git diff` and `git grep`. Every other command that exits 1 counts as a failure, even when exit 1 is a benign informational outcome: no matches for `pgrep` and `jq -e`, files that differ for `cmp`.
167167 
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