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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 v2.1.267 ·

Deferred-tool 'kept' bookkeeping reworked around a unified strict/eager schema builder

Deferred MCP tool tracking was reworked around a unified schema-building helper

TierUnder the hoodhow much it should matter to you
Useful2my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaMCPwhat it touches
KindInternal Changesin v2.1.267,
Under the hood

Deferred MCP tool tracking was reworked around a unified schema-building helper

What

Claude Code keeps track of "deferred" tools from MCP servers, meaning tools that are temporarily set aside when a server disconnects and restored if it reconnects. The logic for rebuilding these tools' definitions was reworked to go through one consistent helper function everywhere, instead of each call site handling the strict and eager_input_streaming settings on its own. Whether a tool is treated as "eager" is now computed fresh each time rather than checked once against a static list.

Why

This is an internal consistency fix that should make deferred tool handling behave the same way everywhere it's used, reducing the chance of one call site treating a tool's schema differently from another.

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Feature flag
tengu_plucky_orchard Gate removed from the code

This release deleted the gate from the code while it was still reading on for the account this site reads, so the code path no longer asks a flag before running.

This account: on · anonymous baseline: on · compiled default in v2.1.267: not a boolean we can read

Read once, for one account on one subscription tier, against v2.1.267. It isn't a statement about your account. What a flag value here can and cannot tell you

What has happened since
Gate removed from the code v2.1.267 removed the tengu_plucky_orchard gate from the code while it was still reading on for the account this site reads. The code path no longer asks a flag before it runs.

See this across every release →

See this entry in the whole of v2.1.267 →

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