Skill

careful-mode

Production safety guard that blocks destructive commands for the session. Use when user says '/careful', 'production work', or 'cautious mode'. Do NOT activate for local development work. Deactivate with '/careful off'.

Install

npx claudepluginhub toru-oizumi/claude-harness-engineering --plugin harness-engineering

Tool Access

This skill uses the workspace's default tool permissions.

Preview

A session-scoped safety guard that blocks destructive commands via PreToolUse hook. Activate before production operations; deactivates at session end or on explicit `/careful off`.

Supporting Assets

gotchas.md

SKILL.md

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Last CommitApr 14, 2026

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Careful Mode

A session-scoped safety guard that blocks destructive commands via PreToolUse hook. Activate before production operations; deactivates at session end or on explicit /careful off.

Activation

When this skill is triggered:

Create the flag file:

mkdir -p .claude && touch .claude/careful-mode-active

Confirm to user: "Careful mode is now active. The following commands are blocked for this session:"

rm -rf (wildcard deletion)
DROP TABLE, DROP DATABASE
git push --force, git push -f
kubectl delete
terraform destroy

Deactivation

When user says /careful off or deactivates:

Remove the flag file:

rm -f .claude/careful-mode-active

Confirm to user: "Careful mode deactivated."

What Gets Blocked

The hooks/careful-guard.js PreToolUse hook intercepts every Bash tool call and blocks if:

Command matches any destructive pattern (see above)

The flag file .claude/careful-mode-active exists

Blocked commands show a warning and require explicit user override.

Override

If a blocked command truly needs to run, user can:

Deactivate careful mode: /careful off

Run the command

Re-activate if needed: /careful

Gotchas

See gotchas.md in this directory for known pitfalls and recurring mistakes when using this skill.

Careful Mode

A session-scoped safety guard that blocks destructive commands via PreToolUse hook. Activate before production operations; deactivates at session end or on explicit /careful off.

Activation

When this skill is triggered:

Create the flag file:

mkdir -p .claude && touch .claude/careful-mode-active

Confirm to user: "Careful mode is now active. The following commands are blocked for this session:"
- rm -rf (wildcard deletion)
- DROP TABLE, DROP DATABASE
- git push --force, git push -f
- kubectl delete
- terraform destroy

Deactivation

When user says /careful off or deactivates:

Remove the flag file:
```
rm -f .claude/careful-mode-active
```
Confirm to user: "Careful mode deactivated."

What Gets Blocked

The hooks/careful-guard.js PreToolUse hook intercepts every Bash tool call and blocks if:

Command matches any destructive pattern (see above)
The flag file .claude/careful-mode-active exists

Blocked commands show a warning and require explicit user override.

Override

If a blocked command truly needs to run, user can:

Deactivate careful mode: /careful off
Run the command
Re-activate if needed: /careful

Gotchas

See gotchas.md in this directory for known pitfalls and recurring mistakes when using this skill.