agent-security-ops

Security hardening for solopreneur repos. One command to set up pre-commit hooks, secret scanning, and continuous monitoring.

⚠️ Important: --no-verify Bypass Warning

The pre-commit hook can be bypassed with git commit --no-verify. This skips ALL hooks including secret scanning.

Recommendations:

1. Never use --no-verify unless you've manually verified no secrets are staged
2. Set up CI-side scanning as backup — add TruffleHog to your GitHub Actions / CI pipeline so secrets are caught even if hooks are bypassed
3. Run scan.sh after any --no-verify commit to verify nothing slipped through

The hook is fail-closed: if TruffleHog is not found, commits are blocked (not silently allowed).

Quick Start

bash skills/agent-security-ops/scripts/setup.sh /path/to/repo

This will:

1. Install TruffleHog (pinned version with SHA256 checksum verification, override with TRUFFLEHOG_VERSION env var)
2. Set up a fail-closed pre-commit hook that blocks secrets (scans staged changes)
3. Harden .gitignore with common secret patterns (including .security-ops/, .terraform/)
4. Run initial secret scan (git history + filesystem for untracked files)

What You'll See

setup.sh output:

agent-security-ops: Setting up /Users/you/my-project
✓ TruffleHog already installed (3.88.0)
✓ Pre-commit hook installed
→ Added 2 patterns to .gitignore: .security-ops/ .terraform/
→ Running initial secret scan...
✓ Initial scan: clean
→ Running filesystem scan (untracked files)...
✓ Filesystem scan: clean

Setup complete:
  • Installed pre-commit hook
  • Hardened .gitignore (+2 patterns)
  • Initial scan: clean
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scan.sh summary (stderr):

--- TruffleHog Secret Scan ---
✓ No secrets found

--- TruffleHog Filesystem Scan ---
✓ No secrets in untracked files

--- Pattern Grep Scan ---
⚠ Found 2 high-confidence secret pattern(s)
./config.js:3:  apiKey: "sk-proj-abc123..."
✓ No low-confidence patterns

--- Summary ---
⚠ Total: 2 (secrets=0[0 verified], fs=0, patterns=2[+0 low], ...)

Commands

All scripts support --help and --version flags.

setup.sh — One-time repo hardening

bash scripts/setup.sh [/path/to/repo]
bash scripts/setup.sh --fix-ssh /path/to/repo   # also fix SSH permissions

Idempotent. Safe to run multiple times. Defaults to current directory. Existing pre-commit hooks are preserved (appended to, not overwritten).

scan.sh — Full security scan

# JSON report to stdout, human summary to stderr
bash scripts/scan.sh [/path/to/repo]

# Save report
bash scripts/scan.sh /path/to/repo > report.json

Checks:

• Secrets: TruffleHog — all secrets found (verified ones highlighted)
• Filesystem: TruffleHog filesystem scan for untracked/working files
• Pattern grep (high-confidence): AWS, GitHub, Anthropic, Slack, OpenAI, Stripe, Google, Twilio, SendGrid, npm, Vault, private keys
• Pattern grep (low-confidence): Database URLs, password/secret assignments, bearer tokens, Firebase, Supabase, JWTs
• .gitignore audit: Uses git check-ignore to verify patterns work
• Dependency audit: npm audit / pip audit (results in JSON output)
• File permissions: Finds world-readable .env, .pem, .key, credential files
• Open ports: Lists listening ports, flags unexpected ones (note: may need sudo on macOS)
• Environment secrets: Scans shell profiles for hardcoded keys/tokens
• Loose .env files: Checks $HOME, Desktop, Downloads for .env files (warning only, not counted as repo findings)
• Docker secrets: Checks Dockerfiles and compose files for hardcoded secrets
• SSH audit: Verifies ~/.ssh permissions (report only — use setup.sh --fix-ssh to fix)
• Git remotes: Flags insecure HTTP remotes, checks GitHub repo visibility

monitor.sh — Cron-friendly monitoring

bash scripts/monitor.sh [/path/to/repo]

Content-based delta detection (hashes scan results, not just counts). Exits 1 on any change, 0 if unchanged. Uses atomic file writes and flock-based locking to prevent concurrent runs.

Cron Integration

# Check every hour, alert on new findings
0 * * * * bash /path/to/skills/agent-security-ops/scripts/monitor.sh /path/to/repo || notify "Security scan changed"

Found Something?

Limitations

• Grep ≠ AST analysis: Pattern matching catches literal strings, not obfuscated or dynamically constructed secrets.
• No SAST/DAST: This is not a replacement for static/dynamic application security testing.
• IaC limited to Docker: No Terraform, Kubernetes, or CloudFormation scanning beyond basic grep patterns on .tf/.tfvars.
• TruffleHog verification: Verification depends on service availability — if an API is down, a real secret may show as "unverified." That's why we now scan all secrets, not just verified ones.
• Port scanning: Only detects currently listening ports, not firewall rules or network exposure. May need sudo on macOS for full process info.
• $HOME .env scan: Checks outside repo scope as a convenience — findings are warnings only, not counted as repo findings.

What It Scans

Security Model

• Binary verification: TruffleHog downloaded with SHA256 checksum verification against official release checksums
• Fail-closed hook: Missing TruffleHog blocks commits (not silently passes)
• No brew fallback: Only verified direct download to prevent supply chain attacks
• Version pinning: TRUFFLEHOG_VERSION validated as semver before use
• Self-exclusion: Scripts exclude themselves from grep scans via content marker

Reference Files

• references/patterns.md — Regex patterns for all detected secret types, marked as ✅ scanned or 📖 reference only.

Dependencies

• git, grep, find (standard)
• trufflehog (installed by setup.sh, pinned version with checksum verification)
• jq (optional — produces properly escaped JSON; without it, falls back to shell-based escaping which may break on unusual filenames/content)

Built by The Agent Wire — a weekly newsletter about AI agents for solopreneurs. Liked this skill? I write about building agent-ops tools like this every Wednesday. Star ⭐ this skill if it saved you from leaking a secret.

FAQ

What is this skill? Agent Security Ops installs pre-commit hooks and runs 10-point security scans to prevent AI agents from leaking secrets. Catches API keys, tokens, passwords, and credentials before they reach git history.

What problem does it solve? AI agents generate and handle credentials constantly — API keys, tokens, database URLs. Without guardrails, these end up in commits, logs, or chat messages. This skill adds automated scanning at commit-time and on-demand.

What are the requirements? Bash, git, and TruffleHog (installed automatically). Works on macOS and Linux. No API keys or external services needed.

What does the 10-point scan check? Git staged files, environment files (.env), config files, recent git history, high-entropy strings, known secret patterns, AWS/GCP/Azure credentials, private keys, database URLs, and API tokens.

Does it work with any AI agent framework? Yes. It's framework-agnostic — operates at the git and filesystem level. Works with OpenClaw, Claude Code, Cursor, Aider, or any tool that writes files.

Can it run on a schedule? Yes. Pair it with a cron job for periodic scans of your workspace. The scan outputs a structured report suitable for automated monitoring.