Permission Auditor

permission-auditor

Reviews your .claude/settings.json for overpermissive allowlists, missing denylists, and known-risky tool combos. Suggests safer defaults.

When to activate

Trigger phrases: audit my settings, audit permissions, safer claude, /audit-perms, am I too permissive.

Auto-activate the FIRST time the user runs Claude Code in a fresh repo (no .claude/settings.json present) — offer to scaffold a safe default.

What it checks

Allowlist issues

• Wildcard Bash(*) — too broad, suggest tightening
• Bash(rm -rf*) allowed — dangerous
• Bash(curl|wget*) allowed without URL scope — data exfil risk
• Write(*) allowed across entire filesystem — should scope to project
• Edit(*) outside project root — same

Denylist gaps

• No deny on .env, *.key, *.pem, id_rsa*
• No deny on ~/.aws/, ~/.ssh/, ~/.kube/
• No deny on **/secrets/**
• No git push --force deny
• No rm -rf / style deny

Hook gaps

• No PreToolUse hook to log bash commands
• No Stop hook (you lose session metadata)
• No safety net for WebFetch to internal URLs

Output

Permission audit: .claude/settings.json
======================================

Allowlist (8 rules):
✓ Bash(npm install:*)         - scoped
✓ Bash(npm run *)             - scoped
⚠ Bash(*)                     - TOO BROAD. Tighten to specific allowed commands.
⚠ Write(*)                    - no path scope. Limit to project root.

Denylist (2 rules):
⚠ Missing: Read(./.env)
⚠ Missing: Read(./id_rsa*)
⚠ Missing: Bash(git push --force*)
⚠ Missing: Bash(rm -rf /*)

Hooks: none configured.
Recommend at minimum:
- PreToolUse: log Bash commands to a session file
- Stop: sync this conversation to your vault

Suggested patches: (apply with /audit-perms apply)
- Add 4 deny rules above
- Replace Bash(*) with: Bash(npm:*), Bash(git:*), Bash(python:*), Bash(pytest:*)
- Add the two hooks

Process

1. Read .claude/settings.json (project) and ~/.claude/settings.json (user)
2. Parse allow/deny/hook arrays
3. Run rule checks above
4. Score: 0-100 safety score
5. Generate suggested patch as a JSON diff
6. Offer to apply

Inputs

• Project .claude/settings.json
• User-level ~/.claude/settings.json
• Project file tree (to scope Write/Edit rules)

Outputs

• Audit report (markdown)
• Suggested JSON patch
• One-line summary (e.g. "Safety score: 62/100. 4 issues, 2 critical.")

Slash command

• /audit-perms — run the audit
• /audit-perms apply — apply the suggested patches

Critical issues that block apply

If any of these are missing, the auditor refuses to skip them:

• Deny on Read(./.env*) and Read(./*.key)
• Deny on Bash(rm -rf /)
• Deny on Bash(git push --force* main) / master