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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 v2.1.259 ·

Prompt context blocks now pass through a resolver/invalidator pipeline before assembly

User context is assembled into named blocks and passed through a resolver that can rewrite it; by default it passes through untouched.

TierNothing to try yethow much it should matter to you
Useful4my rating, 1 to 5
Signal4worth watching, 1 to 5
AreaPrompt Contextwhat it touches
KindIn Developmentin v2.1.259,
Nothing to try yet Notable

User context is assembled into named blocks and passed through a resolver that can rewrite it; by default it passes through untouched.

User-context construction (claudeMd, userEmail, attachedProject, currentDate) is now assembled into a name/text array and passed through a pR.resolvePromptContext pipeline before being used in the prompt. By default this is a passthrough, but a resolver can be installed via setPromptContextResolver to rewrite the context. If the resolver rewrites claudeMd, instructionFiles is now conditionally cleared accordingly.

Read from
Names in the bundlesetPromptContextResolverclaudeMd
Since it was published

The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.

Confirmed since Anthropic's documentation has since written up claudeMd, on How Claude remembers your project. * Exclude it with [`claudeMdExcludes`](#exclude-specific-claude-md-files) memory see the edit
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agreesAnthropic's documentation has since written up claudeMd, on How Claude remembers your project.

See this entry in the whole of v2.1.259 →

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