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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

Claude Code v2.1.242 ·

Tool calls with a late host argument are rejected instead of run

Local tool calls that get a host argument too late now fail instead of running.

You'll notice Bug Fixes
JSON All of v2.1.242
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Tool ExecutionArea: what it touches
Bug FixesKind: in v2.1.242,
Bug FixesSection of the release
What

Both the streaming and the direct tool-execution paths now check, before running a locally-executed tool, whether it was handed a host argument that arrived too late, and fail the call with a dedicated error rather than executing it.

Evidence

late host argument on a local tool call

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.242 →

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