Claude Code is silently adding session URLs (claude.ai/code/session_...) to the bottom of every single commit and PR description you make.

Users of Claude Code are reporting that the tool is silently appending public session URLs (claude.ai/code/session_...) to every commit and pull request description. This behavior is automatic and occurs without user notification. A fix involves setting "attribution.commit": "" in the .claude/settings.json file to prevent these URLs from being added to git history and PR descriptions.