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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 ·

The Read tool's PDF sentence now depends on a per-request check

Whether the Read tool's description mentions PDFs now depends on a check made for each request, though the captured text is unchanged

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
File ToolsArea: what it touches
Internal ChangesKind: in v2.1.288,
Internal ChangesSection of the release
What

The Read tool is how Claude opens files. Its description includes a sentence saying it can read PDF files. Whether that sentence is shown now depends on a check that looks at something about the current request, instead of a fixed one.

Why

PDF support may now be described differently depending on the model or situation. The Read tool description captured under this release is unchanged from the previous release across the models checked.

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 unclear what the new check looks at to decide whether the PDF sentence is shown.

See this entry in the whole of v2.1.288 →

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