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Claude Code v2.1.211 Adds --forward-subagent-text: Subagent Text and Thinking Now Stream Into stream-json

Claude Code Changeloghigh signal

Released July 15, 2026, v2.1.211 adds the `--forward-subagent-text` flag and the `CLAUDE_CODE_FORWARD_SUBAGENT_TEXT` environment variable, which include subagent text and thinking in stream-json output. Until now headless orchestrations got only the subagent's final return value, making multi-agent pipelines opaque to debug. This is the first supported way to observe subagent reasoning in programmatic (non-TUI) runs.

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