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Sweep 28 Aug 2026 · 16:06Z Build v2.1.251 479 read Stable v2.1.236 Latest v2.1.251 Next v2.1.251 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_CODE_HOVER_REST

A Claude Code environment variable, read out of the shipped bundle. It has been in the build since v2.1.238, including the newest one read.

What it is

Plaintext credential reads could come from memory instead of the file, but only under off-by-default storage.

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.238.

Presence across releases

ReleasesReadingDeclared typeDefault
2.1.245 – 2.1.251 6 releases never mined — —
2.1.238 – 2.1.243 6 releases in the build triBool —

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. v2.1.248An in-memory storage backend is bundled but off by default

    A full in-memory storage backend ships, off unless you set an environment variable.

    named in this entry

  2. v2.1.242On-disk storage layer gains symlink and permission rules per data type

    Where Claude Code stores your data gains per-type symlink and file-permission rules, off by default.

    named in this entry

  3. v2.1.238Plaintext credential store gained an in-process cache

    Plaintext credential reads could come from memory instead of the file, but only under off-by-default storage.

    named in this entry

  4. v2.1.238A second plugin asset-cache cleaner exists, switched off in this build

    An alternative plugin cache cleaner exists, but you still get the old file-timestamp scan.

    named in this entry

  5. v2.1.238CLAUDE_CODE_HOVER_REST gives a local override for the new credential and settings storage

    You can pin the new credential and settings storage backend yourself with one environment variable.

    named in this entry

  6. v2.1.238The v5 storage choice reads the environment variable first

    An environment variable now takes priority over the server flag when picking the new storage backend.

    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_code, up to twelve of them.

CLAUDE_CODE_3P_PROBE_WROTE_OPUS_DEFAULTNo description from anybody. 2.1.207 CLAUDE_CODE_3P_PROBE_WROTE_SONNET_DEFAULTNo description from anybody. 2.1.207 CLAUDE_CODE_ACCESSIBILITYSet to 1 to keep the native terminal cursor visible and disable the inverted-text cursor indicator. Allows screen magnifiers like macOS Zoom to track cursor position 2.1.138 CLAUDE_CODE_ACCOUNT_TAGGED_IDNo description from anybody. 2.1.138 CLAUDE_CODE_ACCOUNT_UUIDThe device bridge is skipped entirely when the host's account UUID doesn't match the stored one. 2.1.138 CLAUDE_CODE_ACT_DONT_REDERIVEThree existing feature gates moved position; their defaults are unchanged. 2.1.162 CLAUDE_CODE_ACTIONNo description from anybody. 2.1.138 CLAUDE_CODE_ADDITIONAL_DIRECTORIES_CLAUDE_MDSet to 1 to load memory files from directories specified with --add-dir. Loads CLAUDE.md, .claude/CLAUDE.md, .claude/rules/*.md, and CLAUDE.local.md. By default, additional directories do not load memory files 2.1.138 CLAUDE_CODE_ADDITIONAL_PROTECTIONNo description from anybody. 2.1.138 CLAUDE_CODE_ADOPT_UNDERIVABLE_PARKED_PERMISSIONA resumed headless session could hand you back a permission prompt left unanswered, but three variables must be set. 2.1.238 CLAUDE_CODE_AGENTNo description from anybody. 2.1.138 CLAUDE_CODE_AGENT_COST_STEERNo 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.