Opus 4.7 Emergency Kit — 5 commands to protect your Claude Code data (auto mode safety broken, 23+ data loss incidents)

Opus 4.7 broke the auto mode safety classifier (#49618). 23+ data loss incidents in 72 hours. Here's the minimum protection.

claude --model claude-opus-4-6

Or permanently in ~/.claude/settings.json:

{
  "model": "claude-opus-4-6"
}

npx cc-safe-setup --opus47

Installs 4 hooks: dotfile protection, auto-mode safety enforcer, case-insensitive path guard, model version alert. Opus 4.7 silently changed the default from "summarized" to "omitted" (#49268, 17 reactions).

claude --thinking-display summarized

cp -r ~/.ssh ~/.ssh.bak && cp ~/.gitconfig ~/.gitconfig.bak && cp ~/.bash_profile ~/.bash_profile.bak

• Opus 4.7 Safety Scanner — browser-based, no install
• Token Checkup — diagnose token consumption in 30 seconds | Issue | Impact | Status | |-------|--------|--------| | #49618 | Auto mode classifier hardcoded to 4.6 | Open | | #49554 | ~/.ssh classified as safe to delete | Open | | #49129 | 50GB permanently deleted | Open | | #49601 | Quota drains 3x faster on 4.7 | Open | | #49356 | System tokens 1.7x inflation (21.5K→36.7K) | Open | | #49302 | cache_read charged at full rate | Under investigation | | #49268 | Thinking summaries silently disabled | Open | For comprehensive safety (684 hooks, 9,200+ tests): cc-safe-setup Token consumption deep dive (800 hours of data): Token Book on Zenn