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Sweep 28 Aug 2026 ยท 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.

One change

working-with-messages

build-with-claude/working-with-messages

first seen The page's own history The capture it came from

Nearest release: v2.1.238, published an hour before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

build-with-claude/working-with-messages Changed · +4 / -0 lines

from line 1046
     Control desktop computer environments with the Messages API.
   </Card>
 
+  <Card title="Browser use tool" icon="browser" href="https://platform.claude.com/docs/en/agents-and-tools/tool-use/browser-use-tool">
+    Let Claude navigate, read, and interact with webpages in a browser you run.
+  </Card>
+
   <Card title="Structured outputs" icon="code-brackets" href="https://platform.claude.com/docs/en/build-with-claude/structured-outputs">
     Get guaranteed, schema-validated JSON output from Claude.
   </Card>