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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.308 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial
Home / Reference / Settings keys

maskClaims

setting never mined JSON

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.

Malformed JWT masking options in credential rules are now discarded.

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.224.

First seen — never in a mined build
Last seen — never in a mined build
Builds0 / 150on this box, as of v2.1.309
Written about v2.1.216 first named in a changelog, 20 Jul 2026

In the changelogs

5

Releases whose published page names maskClaims.

  1. v2.1.268
    Sandbox-runtime credential masking gains JWT decoding, claim-level masking, and duplicate-value scrubbing

    Sandbox credential masking adds JWT decoding, per-claim masking, and scrubbing of duplicate secret values

    found in this entry's text

  2. v2.1.268
    Sandbox schema additions: MITM proxy domain routing and env-var credential masking with JWT decode

    Sandbox config gains schemas for routing traffic through a MITM proxy and masking credentials in environment variables, including JWT handling

    found in this entry's text

  3. v2.1.224
    Stricter cleanup of JWT masking rules

    Malformed JWT masking options in credential rules are now discarded.

    found in this entry's text

  4. 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

  5. v2.1.216

First cited

1

The earliest release whose published evidence quoted maskClaims was v2.1.224, 7 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.

ReleaseDateThe span that was quoted
v2.1.2247 Aug 2026maskClaims requires decode - without a decode format there is no token to read claims from. Set decode, or omit maskClaims.

Presence across releases

0

The 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.

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