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Sweep 27 Oct 2026 · 19:04Z Build v2.1.312 531 read Stable v2.1.308 Latest v2.1.312 Next v2.1.312 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.311 ·

Requests to the model can reuse earlier content, off unless switched on

CLAUDE_CODE_INCREMENTAL_REQUEST_BODY controls a new way of building requests that reuses earlier content, off by default

Use it now Notable No documentation found New Features
JSON All of v2.1.311
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New FeaturesKind: in v2.1.311,
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Unclear Whether setting CLAUDE_CODE_INCREMENTAL_REQUEST_BODY alone is enough to turn the mode on is not known.

What

The environment variable CLAUDE_CODE_INCREMENTAL_REQUEST_BODY controls a new way of building the requests Claude Code sends to the model, reusing content from earlier requests. An environment variable is a setting you give a program from your shell. When it is unset it counts as 0, which is off.

  • A nonzero value turns the mode on, but only if a second internal check also passes.
  • A value of 2 also reuses content in blocks. That needs CLAUDE_CODE_GZIP_REQUEST_BODY_BLOCKS set to 1 or 2, which turns on the existing compression of requests.
  • The mode does nothing when Claude Code is not using Anthropic's own API directly, or when a request asks for a set output format.
Why

It changes how requests to the model are built behind the scenes. You get the old behaviour unless the variable, or a value from the server, turns it on.

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Names in the bundleCLAUDE_CODE_INCREMENTAL_REQUEST_BODY
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Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhether setting `CLAUDE_CODE_INCREMENTAL_REQUEST_BODY` alone is enough to turn the mode on is not known.
The name it cites is new in this buildNew in this build: CLAUDE_CODE_INCREMENTAL_REQUEST_BODY

See this entry in the whole of v2.1.311 →

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