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Sweep 28 Aug 2026 · 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.250 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

Reference / Environment variables

CLAUDE_COWORK_MEMORY_INDEX_CONTENT

A Claude Code environment variable, read out of the shipped bundle. It has been in the build since v2.1.138, including the newest one read.

What it is

Adding pinned: true to a memory file's frontmatter would apply it to every session automatically.

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.219.

Presence across releases

ReleasesReadingDeclared typeDefault
2.1.245 – 2.1.250 5 releases never mined — —
2.1.160 – 2.1.243 75 releases in the build str —
2.1.138 – 2.1.159 20 releases in the build — —

A row reading never mined is a release with no archived bundle behind it. Nothing was read out of it, so nothing here says whether the name was in it. A declared type or a default is only ever what that release's own bundle stated.

Changelog entries naming it

  1. v2.1.219Pinned memories are injected into the session

    Adding pinned: true to a memory file's frontmatter would apply it to every session automatically.

    named in this entry

  2. v2.1.219Pinned memory files

    Memory files marked pinned would be injected into every conversation instead of waiting to be recalled.

    named in this entry

Documentation pages

None of Anthropic's documentation pages this site has a copy of carries this name.

Names beside it

Every environment variable in the inventory starting claude_cowork_memory, up to twelve of them.

CLAUDE_COWORK_MEMORY_EXTRA_GUIDELINESNo description from anybody. 2.1.138 CLAUDE_COWORK_MEMORY_GUIDELINESNo description from anybody. 2.1.138 CLAUDE_COWORK_MEMORY_PATH_OVERRIDENo description from anybody. 2.1.138

Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the environment variable does. All environment variables.