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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 v2.1.260 ·

New localStdinOrigin option threaded through prompt processing

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Prompt processing now forwards the local-stdin origin tag.

TierUnder the hoodhow much it should matter to you
Useful1my rating, 1 to 5
Signal1worth watching, 1 to 5
AreaHeadless SDKwhat it touches
KindInternal Changesin v2.1.260,
Under the hood No documentation found

Prompt processing now forwards the local-stdin origin tag.

The prompt-processing call in headless sessions now accepts and forwards a localStdinOrigin field, alongside existing origin-tracking fields like bridgeOrigin and modelScheduledOrigin.

Read from
Names in the bundlelocalStdinOrigin

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