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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 v2.1.280 ·

First-upload hook added to a sync/session config path

Session sync config gains a firstUpload hook for initial uploads

Under the hood Internal Changes
JSON All of v2.1.280
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Session SyncArea: what it touches
Internal ChangesKind: in v2.1.280,
Internal ChangesSection of the release
What

The configuration object used when syncing or attaching a session, which already includes things like credentials, allowBundle, and seedDirSync, now also has a firstUpload field pointing to a named handler.

Why

This gives the sync process a dedicated hook to run specifically on the first upload of a session, separate from later uploads.

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 doubtThe finding does not say what the firstUpload handler actually does.

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