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Sweep 25 Sep 2026 · 19:33Z Build v2.1.283 504 read Stable v2.1.274 Latest v2.1.283 Next v2.1.283 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.281 ·

Headless input reader tracks unconsumed stdin to decide whether the session is busy

Print and SDK sessions now count unread input as work and do not finish while some is waiting

Under the hood Internal Changes
JSON All of v2.1.281
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
SDKArea: what it touches
Internal ChangesKind: in v2.1.281,
Internal ChangesSection of the release
What

In print mode (running with -p) and when Claude Code is driven by another program (the SDK), it reads its input line by line. It now keeps a hasUnconsumedInput flag. The flag is set when a non-blank line is waiting to be processed and is cleared once that line has been read.

When Claude Code decides whether it is still busy, it now counts that waiting input, together with a turn that is still running and questions that are waiting for an answer.

Why

A session is less likely to finish while input sent to it has not been handled yet.

See this entry in the whole of v2.1.281 →

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