Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
One change · claude-code

Subagents in the SDK changed

agent-sdk/subagents

Nearest release: v2.1.280, published an hour after upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Upstream edited this page at 22 Sep 2026 14:15 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 22 Sep 2026 14:37 UTC.

Upstream edited
Recorded here
Lines+1added
Lines−1removed
From line 703 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits15to this page, all time

The whole hunk

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704704If Claude completes tasks directly instead of delegating to your subagent:
705705 
706* **Use explicit prompting**: mention the subagent by name in your prompt, for example "Use the code-reviewer agent to..."
706* **Use explicit prompting**: mention the subagent by name in your prompt, for example "Use the code-reviewer agent to check the authentication module"
707707* **Write a clear description**: explain exactly when to use the subagent so Claude can match tasks appropriately
708708 
709709### Filesystem-based agents not loading