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Sweep 28 Aug 2026 · 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.250 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

Reference / Settings keys

apiKeyHelper

A Claude Code settings key, read out of the shipped bundle. It has been in the build since v2.1.138, including the newest one read.

What it is

Generate the [API credential](/docs/en/authentication#credential-management) with your own command

Anthropic's own wording. Read off Claude Code settings reference, captured 2026-08-28.

Presence across releases

ReleasesReadingDeclared typeDefault
2.1.245 – 2.1.250 5 releases never mined — —
2.1.138 – 2.1.243 95 releases in the build — —

A row reading never mined is a release with no archived bundle behind it. Nothing was read out of it, so nothing here says whether the name was in it. A declared type or a default is only ever what that release's own bundle stated.

Changelog entries naming it

  1. v2.1.248Gateway model discovery explains why it skipped, and can use apiKeyHelper

    Gateway model discovery can authenticate with apiKeyHelper and logs why it skipped.

    named in this entry

  2. v2.1.234SDK reports where an API key actually came from

    The SDK now reports where an API key really came from, like the env var or an apiKeyHelper.

    named in this entry

  3. v2.1.227apiKeyHelper output is validated before it is sent

    Your apiKeyHelper output is now checked for junk characters and length before being used.

    named in this entry

  4. v2.1.227Bad HTTP header values are rejected before the request instead of crashing

    Illegal header values from your env or key helper now fail clearly instead of crashing.

    named in this entry

  5. v2.1.224Artifact tool now explains exactly which credential is blocking it

    The artifact tool now names the exact credential blocking you, with a fix for each.

    named in this entry

Documentation pages

A reference table page is one whose own table defines this name, and it is where the description above came from. A page that mentions it carries the name somewhere in its text and may say nothing about it at all. Every page carrying it.

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.