dedupUnchangedReads
A Claude Code settings key, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.
A read can opt out of the suppression that hides re-reads of unchanged files.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.247.
In the changelogs
2Releases whose published page names dedupUnchangedReads.
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v2.1.265
Tool execution context exposes new capabilities: file history, dedup, isolation latch
Tool execution context gains new internal capabilities for file history, read deduplication, and isolation
found in this entry's text
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v2.1.247
Individual reads can skip the unchanged-file dedup
A read can opt out of the suppression that hides re-reads of unchanged files.
named in this entry, found in this entry's text
First cited
3The earliest release whose published evidence quoted dedupUnchangedReads was v2.1.247, 26 Aug 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.
Presence across releases
0The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the settings key does. All settings keys.