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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_DEBUG_LOGS_DIR

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

Override the debug log file path. Despite the name, this is a file path, not a directory. Requires debug mode to be enabled separately via --debug, /debug, or the DEBUG environment variable: setting this variable alone does not enable logging. The [--debug-file](/docs/en/cli-reference#cli-flags) flag does both at once. Defaults to ~/.claude/debug/<session-id>.txt

Anthropic's own wording. Read off Environment variables, captured 2026-08-28.

Presence across releases

ReleasesReadingDeclared typeDefault
2.1.245 – 2.1.251 6 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. v2.1.227Debug logging rebuilt around a single logger instance

    Debug logging now runs through one logger that keeps queued lines when it restarts.

    named in this entry

Documentation pages

A reference table page is one whose own table defines this name, and it is where the description above came from. A page that mentions it carries the name somewhere in its text and may say nothing about it at all. Every page carrying it.

Names beside it

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

CLAUDE_CODE_DEBUG_LOG_LEVELMinimum log level written to the debug log file. Values: verbose, debug (default), info, warn, error. Set to verbose to include high-volume diagnostics like full status line command output, or raise to error to reduce noise 2.1.138 CLAUDE_CODE_DEBUG_REPAINTSSet CLAUDE_CODE_DEBUG_REPAINTS to capture which components trigger terminal redraws. 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.