sigv4
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.
Managed limits on which AWS credentials the sandbox may use survive settings merges now.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.224.
In the changelogs
3Releases whose published page names sigv4.
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v2.1.268
New AWS SigV4 masked-credential signing policy, default deny
New sandbox setting controls whether AWS-signed requests the proxy can't re-sign are denied or passed through
found in this entry's text, named in this entry
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v2.1.224
Sandbox credential restrictions no longer lost when settings are merged
Managed limits on which AWS credentials the sandbox may use survive settings merges now.
found in this entry's text
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v2.1.224
Sandbox credential masking gains JWT handling, per-claim masking and AWS SigV4 re-signing
Sandbox credential masking can fake JWTs, mask single claims, and re-sign AWS requests after swapping keys.
named in this entry, found in this entry's text
First cited
0No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.
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.