Unclear What effect being on this passthrough list has for each variable, and what the other three variables specifically control, is not described.
What
Claude Code's internal list of recognized environment variables gained four new entries:
CLAUDE_CODE_SANDBOXEDCLAUDE_CODE_ATTRIBUTION_STATUS_TIMEOUT_MSCLAUDE_CODE_TOOL_USE_IDCLAUDE_CODE_MODEL_CAPABILITIES
Why
Adding these to the recognized/passthrough list means Claude Code now acknowledges and forwards these variables where relevant, rather than treating them as unrecognized. CLAUDE_CODE_MODEL_CAPABILITIES was previously introduced to override model capability flags by model name pattern; this change means it's now included alongside the others in the same internal list.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
What effect being on this passthrough list has for each variable, and what the other three variables specifically control, is not described.