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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 / Environment variables

CLAUDE_CODE_ARTIFACT_ASSET_BASE_URL

A Claude Code environment variable, read out of the shipped bundle. It has been in the build since v2.1.221, including the newest one read.

What it is

Three artifact environment variables are now recognised, with the API token stripped from spawned processes as a secret.

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.221.

Presence across releases

ReleasesReadingDeclared typeDefault
2.1.245 – 2.1.250 5 releases never mined — —
2.1.221 – 2.1.243 22 releases in the build str —

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. v2.1.221Artifact environment variables, with the API token treated as a credential

    Three artifact environment variables are now recognised, with the API token stripped from spawned processes as a secret.

    named in this entry

Documentation pages

None of Anthropic's documentation pages this site has a copy of carries this name.

Names beside it

Every environment variable in the inventory starting claude_code_artifact_asset, up to twelve of them.

CLAUDE_CODE_ARTIFACT_ASSETSClaude can now upload, list, read and delete images, video, PDFs and fonts attached to your published artifacts. 2.1.234

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 environment variable does. All environment variables.