Preflyt - Post-Deploy Security Scan

After deploying a web app, API, or backend to a public URL, run a Preflyt scan to detect exposed secrets, misconfigurations, and unsafe defaults.

When to use this

• After deploying a web application to production or staging
• After deploying a backend API (Node, Python, Go, etc.)
• After any infrastructure change that exposes a new URL

How to run a scan

npx preflyt-check https://your-deployed-url.com

With options:

# Fail if issues found (for CI/CD)
npx preflyt-check https://your-deployed-url.com --fail

# Generate a shareable report link
npx preflyt-check https://your-deployed-url.com --share

# With Pro license for unlimited scans
npx preflyt-check https://your-deployed-url.com --key YOUR_LICENSE_KEY

Exit codes:

• 0: scan completed, no issues (or issues found without --fail)
• 1: issues found with --fail set, or scan error

What it checks

• Exposed .env and config files (database passwords, API keys)
• Exposed .git repositories (source code leakage)
• Exposed backend source code (app.py, server.js, config.php served as static files)
• Exposed database files (dynamic detection using project name - {name}.db, {name}.sqlite3)
• Open database ports (MySQL, PostgreSQL, MongoDB, Redis, Elasticsearch)
• Directory listing detection and dangerous file parsing
• Exposed admin panels and debug endpoints
• Missing security headers (HSTS, CSP, X-Frame-Options, CORS)
• Exposed backup files and source maps
• Server version leakage
• Insecure cookie flags

What it does NOT do

• Does not scan source code or local files
• Does not perform exploit attempts
• Does not test authentication logic
• Does not scan localhost or private networks
• Does not read or transmit any local environment variables, files, or code

Privacy

• Without --share: all results display in the terminal only. No data is sent to preflyt.dev beyond the initial scan request containing the target URL.
• With --share: scan results are uploaded to preflyt.dev and a public report link is generated (valid 30 days).
• The scan sends only the target URL to api.preflyt.dev. No local files, code, or environment variables are transmitted.
• The npm package is open source and zero-dependency: https://github.com/doureios39/preflyt-check

Integration examples

Deploy script

#!/bin/bash
git pull
npm run build
pm2 restart app
sleep 5
npx preflyt-check https://mysite.com --fail || echo "Security issues found"

Git hook (post-receive)

#!/bin/bash
# .git/hooks/post-receive
git pull
npm run build
pm2 restart app
sleep 5
npx preflyt-check https://mysite.com

GitHub Actions

- name: Security scan
  run: npx preflyt-check ${{ env.DEPLOY_URL }} --fail

Agent behavior

When a deployment to a public URL is detected:

1. Run npx preflyt-check
2. If HIGH severity findings exist, recommend immediate fix
3. If MEDIUM or LOW findings, inform the user and suggest fixes
4. If no findings, confirm deployment appears safe
5. Never let a Preflyt error block a deployment - if the scan fails, report the error and move on

Notes

• All checks are read-only and non-intrusive
• Scans take approximately 15-30 seconds
• Free tier: 3 scans. Pro ($9.99/mo): unlimited
• Website: https://preflyt.dev
• npm: https://www.npmjs.com/package/preflyt-check
• Source: https://github.com/doureios39/preflyt-check