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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.260 ·

Context-window breakdown now separates 'System tools (deferred)' bucket sizing more precisely

Context-usage accounting now splits deferred MCP and system tool buckets more precisely.

TierUnder the hoodhow much it should matter to you
Useful1my rating, 1 to 5
Signal1worth watching, 1 to 5
AreaContext Windowwhat it touches
KindInternal Changesin v2.1.260,
Under the hood

Context-usage accounting now splits deferred MCP and system tool buckets more precisely.

The token-usage breakdown behind the context-usage visualization now tracks deferred MCP tools and deferred system tools as separate categories, each carrying an isDeferred flag, alongside a reworked auto-compact threshold calculation. This is an internal accounting change, not a new user-facing toggle.

See this entry in the whole of v2.1.260 →

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