fort

Know your Mac's security posture, fix the gaps, and keep it locked down. One command.

fort runs 15+ security checks on your Mac, fixes what it safely can, and writes an auditor-ready report. No agent, no signup, no MDM enrollment. Just a single binary.

Good for anyone who wants to harden their Mac. Essential for teams preparing for SOC 2 or ISO 27001.

djadmin.github.io/fort

fort audits every control and shows where you stand. fort --fix reviews each change, then applies, after you confirm.

Install

Homebrew (recommended)

brew install djadmin/tap/fort

Direct download (macOS, Apple Silicon + Intel)

curl -fsSL https://github.com/djadmin/fort/releases/latest/download/fort_darwin_all.tar.gz | tar xz && sudo mv fort /usr/local/bin/

Go

go install github.com/djadmin/fort/cmd/fort@latest

Build from source

git clone https://github.com/djadmin/fort.git
cd fort && make install

Update

brew upgrade djadmin/tap/fort

Usage

fort                          # audit your Mac
fort --dry-run                # preview what --fix would change; nothing is applied
fort --fix                    # audit, show confirmation prompt, apply selected fixes
fort --fix --yes              # skip prompt; for scripts, MDM push, or cron
fort --json                   # structured JSON output for automation
fort --report                 # write fort-report-YYYY-MM-DD.html (print to PDF)
fort --only filevault,firewall  # run only the specified checks (comma-separated IDs)

Exit codes: 0 all pass · 1 any fail · 2 any warn

Use it from Claude Code

fort ships a Claude Code plugin, so you can audit and harden your Mac just by asking. Say "is my Mac secure?" and Claude runs the audit, explains each finding and why it matters, then fixes only what you approve, showing the exact command first.

# 1. install the fort binary (the plugin drives it; Claude can also install it for you)
brew install djadmin/tap/fort

# 2. add the plugin
/plugin marketplace add djadmin/fort
/plugin install fort@fort

Then just ask, or run a command directly: /fort-audit (read-only), /fort-harden (fix safe issues with your approval), /fort-report (HTML evidence). The plugin runs the fort binary on your Mac over your shell, no extra service, nothing uploaded. See plugin/ for details.

Safe by design

• The audit makes no network calls. fort reads local system state and exits. Nothing is uploaded, no account, no telemetry.
• No black box. Every check prints the exact command it ran and its raw output, in the terminal, the JSON, and the HTML report. Verify it instead of trusting it.
• --fix always asks first. It shows each change and prompts [y/N] before applying. Use --dry-run to preview without touching anything, or --yes to skip the prompt when you mean to (automation, cron, MDM).
• One MIT-licensed Go binary. No agent, no background process, nothing installed system-wide. Read the source.

Full detail in PRIVACY.md: zero data collection, no network calls, nothing leaves your machine.

What it checks

15+ macOS checks across five groups, each mapped to SOC 2, ISO 27001, NIST CSF, and CIS v8:

The exact set grows over time. Run fort to see every check on your machine, and the changelog for what's new.

JSON output

{
  "tool": "fort", "version": "0.3.0", "hostname": "alice-mbp",
  "os_version": "15.5", "timestamp": "2026-06-09T10:00:00Z",
  "summary": { "total": 16, "pass": 12, "fail": 2, "warn": 2, "score": "12/16" },
  "policies": [{ "id": "filevault", "status": "pass", "current": "on",
    "evidence": "$ fdesetup status\nFileVault is On.",
    "frameworks": { "SOC 2": ["CC6.1", "CC6.7"], "ISO 27001": ["A.8.3"] } }]
}

fort --report writes a self-contained HTML evidence report: machine identity, serial number, OS version, timestamp, per-check results with the exact commands run and their verbatim output, and framework control references. Opens locally or prints to PDF. See a sample report.

Contributing

PRs welcome. To add a check:

1. Create internal/checks/yourcheck_darwin.go and implement the Check interface
2. Register in internal/checks/registry_darwin.go
3. Add framework mappings in internal/checks/frameworks.go
4. Run go test ./...; existing tests enforce interface contracts

Support

If fort saves you time, please star it on GitHub. It is the easiest way to support the project and helps other people find it.

License

MIT