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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.248 ·

SDK control errors carry their subtype too

SDK control errors now name the request that failed instead of just a message.

Under the hood Internal Changes
JSON All of v2.1.248
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
SDKArea: what it touches
Internal ChangesKind: in v2.1.248,
Internal ChangesSection of the release
What

Error replies for stopping a task, listing background tasks, generating a session title, renaming a session, submitting feedback and asking a side question now pass the request name along with the error rather than just stringifying it, making failures attributable.

Evidence

"generate_session_title"

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.248 →

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