CLAUDE_CODE_EXTRA_BODY

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.

Releases whose published page names CLAUDE_CODE_EXTRA_BODY.

1. v2.1.302 16 Oct 2026
   CLAUDE_CODE_AUTO_MODE_MODEL now sits on a list of environment variables

   Claude Code now lists CLAUDE_CODE_AUTO_MODE_MODEL with PATH, CLAUDE_CODE_EXTRA_BODY and CLAUDE_CODE_HOST_CREDS_FILE, and refers to it in more places

   found in this entry's text

2. v2.1.300 14 Oct 2026
   Requests are no longer recorded when CLAUDE_CODE_EXTRA_BODY would leak into the transcript

   If a key added through CLAUDE_CODE_EXTRA_BODY would end up in the session file, Claude Code now skips recording that request and says why

   found in this entry's text, named in this entry

3. v2.1.300 14 Oct 2026
   Recording API requests into session transcripts now defaults to on

   Recording each API request into the session transcript is now on by default unless the server says otherwise; CLAUDE_CODE_ELEGANT_MEADOW overrides it

   found in this entry's text

4. v2.1.282 24 Sep 2026
   Claude Code can record the API requests it sends into session transcripts

   New, off-by-default recording writes each API request's system prompt, tools and message changes into the session transcript file

   found in this entry's text

5. v2.1.267 9 Sep 2026
   CLAUDE_CODE_EXTRA_BODY can no longer inject the 'afk-mode' anthropic-beta

   CLAUDE_CODE_EXTRA_BODY can no longer be used to inject the afk-mode beta header; only auto mode itself can send it

   found in this entry's text, named in this entry

6. v2.1.267 9 Sep 2026
   "Compliance policy" wording replaced with "organization's policy" across several messages

   Messages that mentioned "compliance policy" now say "organization's policy" instead

   found in this entry's text

7. v2.1.232 13 Aug 2026
   Per-turn attribution key sent as tk, and tk is now a reserved metadata name

   tk is now a reserved metadata name and stripped from your extra metadata or body.

   named in this entry, found in this entry's text

8. v2.1.70 6 Mar 2026

   found in this entry's text

9. v0.2.45 15 Mar 2025
   Environment Variable Support for API Customization

   found in this entry's text

The earliest release whose published evidence quoted CLAUDE_CODE_EXTRA_BODY was v2.1.232, 13 Aug 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.

One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.

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.