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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Code CLI 10 Sep 2026
One change · claude-code

Share session output as artifacts changedartifacts

Nearest release: v2.1.268, published under an hour after this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Recorded here
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Lines−1removed
From line 281 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits44to this page, all time

The whole hunk

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from line 281
281281| No backend | An artifact is a static page. It can't store data submitted through a form or authenticate viewers itself. Its only way to fetch data when someone views it is [calling MCP connectors](#pull-live-data-with-mcp-connectors), not an API of its own. |
282282| Downloads | The page can't start a download itself. To let viewers save a file the page generates, Claude declares the downloads capability. See [Offer a file download](#offer-a-file-download). |
283283| Single page | Relative links do not resolve, because nothing is deployed alongside the page. For multi-section content, Claude uses in-page anchors rather than separate files. |
284| Source file types | The published file must be `.html`, `.htm`, or `.md`. Markdown files render as styled HTML. |
284| Source file types | The published file must be `.html`, `.htm`, or `.md`, and must decode as UTF-8, or as little-endian UTF-16 by its byte-order mark. Markdown files render as styled HTML. A file that doesn't decode, or that contains the replacement character `U+FFFD`, is [refused with the line and column to fix](/docs/en/errors#the-source-file-is-not-valid-utf-8-text). |
285285| Rendered size | The rendered page must be 16 MiB or smaller. Large embedded images are the usual cause when a publish fails for size. |
286286 
287287Generating an artifact uses output tokens like any other response, and a styled page is more token-intensive than the same content as terminal text. Inline CSS, JavaScript for interactive controls, and especially images embedded as data URIs are the main contributors. To reduce an artifact's token cost:
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