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Sweep 02 Oct 2026 · 18:55Z Build v2.1.288 509 read Stable v2.1.285 Latest v2.1.288 Next v2.1.288 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.288 ·

Tool search recognises a second kind of tool entry

When Claude searches for tools, Claude Code can now read tool names from full tool definitions as well as from tool references

Under the hood Internal Changes
JSON All of v2.1.288
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Tool SearchArea: what it touches
Internal ChangesKind: in v2.1.288,
Internal ChangesSection of the release
What

Claude Code can hold back some tools, the actions Claude can take, and load them only when Claude searches for them. When it reads which tools a search turned up, it used to understand only short references to a tool. It now also understands entries that carry a full tool definition, and takes the tool's name from that definition.

Why

Tools that are loaded later can now arrive in this second form and still be recognised.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhat produces these full tool definition entries is not known.

See this entry in the whole of v2.1.288 →

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