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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 ·

Prompts can carry an expanded version with extra text added

Claude Code now notes whether a slash command came from the input box, and can store an expanded copy of a prompt with extra text added

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
1Signal: worth watching, 1 to 5
Slash CommandsArea: what it touches
Internal ChangesKind: in v2.1.288,
Internal ChangesSection of the release
What

When you submit a slash command (a command typed with a leading /), Claude Code now records whether it was sent from the composer, the box where you type your prompts.

A prompt can also be expanded: Claude Code adds extra text to it and keeps the expanded version alongside what you typed.

Why

This changes how a prompt is processed between you pressing Enter and it reaching Claude, so what Claude receives can now include more than the text you typed.

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 doubtIt is not clear what text is added when a prompt is expanded, or when that happens.

See this entry in the whole of v2.1.288 →

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