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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.

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Annotations

claude-science/annotations

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claude-science/annotations First recorded · 19 lines, first recorded

# Annotations ## Leaving an annotation ## Sending annotations to Claude

The first capture of this source. The page was already there, and this is what it said.

# Annotations

> Annotations let you attach comments to specific parts of an artifact instead of describing a location in prose.

Annotations let you attach comments to specific parts of an artifact instead of describing a location in prose. Select text in a Markdown, plain-text, LaTeX, or code file; select text in a PDF (one page at a time); click a point on an image or figure; or turn on **Annotate** and click an element in a rendered HTML report. Tables and other artifact types can't be annotated. Session transcripts can also be annotated.

## Leaving an annotation

* Select content and click the **Annotate** pill.
* Type your comment and press Cmd/Ctrl+Enter (or click **Save**).
* The annotation appears as a highlighted badge (text) or numbered pin (images). Hover to read it; click to **Edit** or **Delete**.

## Sending annotations to Claude

Saving an annotation doesn't send it. Pending annotations collect in an **N comments** chip on the composer and are sent with your next message. This lets you batch several annotations and send them together, or send them one at a time. Claude receives each annotation with its filename, the quoted selection (or marked image), and your note.

Once sent, annotations are consumed: they leave the artifact and appear as cards on the message. Annotations don't have threads or a resolve state. To revise an artifact again after Claude updates it, annotate the new version.

Limits: annotation text is capped at 1,000 characters. PDF selections can't cross page breaks. Annotations aren't included in downloads and don't appear in the **Files** grid.