CLAUDE_CODE_RESUME_REASON

A Claude Code environment variable, read out of the shipped bundle. It has been in the build since v2.1.268, including the newest one read.

Releases whose published page names CLAUDE_CODE_RESUME_REASON.

1. v2.1.268 10 Sep 2026
   New CLAUDE_CODE_RESUME_REASON env var for interrupted turns

   New CLAUDE_CODE_RESUME_REASON env var labels why an interrupted turn was resumed

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

2. v2.1.268 10 Sep 2026
   New resume_reason field on streaming assistant-message frames

   Streaming assistant messages can now carry a resume_reason explaining an automatic re-run after an interruption

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

3. v2.1.268 10 Sep 2026
   SDK turn result schema gains resume_reason and result_index fields

   SDK turn results can now report a resume_reason and a result_index

   found in this entry's text

The earliest release whose published evidence quoted CLAUDE_CODE_RESUME_REASON was v2.1.268, 10 Sep 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.