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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.20 ·

Debug Logging to File

Entry
JSON All of v2.1.20
EntryKind: in v2.1.20,
ChangesSection of the release
What

New --debug-file CLI flag writes debug logs to a specific file path.

Usage
claude --debug-file /path/to/debug.log
claude --debug-file=/path/to/debug.log
Details
  • Implicitly enables debug mode when specified
  • Useful for persistent debugging and troubleshooting
Evidence

Argument parser at line 2836 (if (K.startsWith("--debug-file="))) and help text at line 577087 ("--debug-file <path>")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.20 →

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