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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
Claude Code v2.1.267 ·

New 'result_from' content block type for tool results tied to host classifier context

Assistant transcripts can now include a result_from block linking a tool result to host classifier context

TierUnder the hoodhow much it should matter to you
Useful2my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaTranscriptwhat it touches
KindInternal Changesin v2.1.267,
Under the hood No documentation found

Assistant transcripts can now include a result_from block linking a tool result to host classifier context

What

When Claude Code reconstructs the assistant's transcript, it can now include a new kind of content block called result_from, alongside the existing outcome and host_context blocks. It is built from a new internal lookup of tool host result lines and associates a specific tool call with a host.

Why

This is an internal transcript-format addition, so it doesn't change what you see directly, but it lays groundwork for tracking which host produced a given tool result.

Read from
Names in the bundleresult_from
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 practical effect this has for users, or what a 'host' refers to here, is not stated.

See this entry in the whole of v2.1.267 →

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