Production deploy succeeds, but runtime fails because one secret never got added.
Built for teams shipping on Vercel, Railway, Fly, and Render
Detect environment variable drift before production breaks.
Upload your .env.example, connect your deployment platform, and get an instant drift report: what is missing from deployment and what is undocumented in your repo.
The problem every team eventually ships
New team members copy .env.example but miss hidden deployment-only keys.
Incident response starts with guesswork because env docs drifted months ago.
How Env Var Drift Detector fixes it
Upload your canonical env spec
Drag in .env.example so your repo becomes the baseline for required variables.
Read deployed runtime variables
Connect provider APIs to fetch deployed key names without exposing sensitive values.
Get actionable drift output
See missing production keys, undocumented deployment keys, and coverage so you can fix drift before release.
Pro Access
$8/month
Prevent config drift from hitting production by automatically comparing your documented env keys and deployed runtime keys.
- Unlimited drift scans across projects
- Vercel, Railway, Fly, and Render API support
- Actionable missing vs undocumented key reports
- Secure cookie-based paid access
After checkout, return here and use your purchase email to unlock dashboard access.
Already paid?
Enter the same email used at checkout to enable your dashboard cookie access.
FAQ
How does platform access work?
You provide an API token directly in the dashboard for your selected provider. The token is used only for that scan request to read environment variable keys.
Does this expose secret values?
No. The app compares key names. Values are masked or omitted in reports so you can detect drift without leaking credentials.
Can I use this before every release?
Yes. Teams run a scan before production deploys or wire the compare API into CI to fail builds when required env keys are missing.
How does paid access get unlocked?
After Stripe checkout, configure a Stripe webhook to this app and unlock with your purchase email. The app sets a secure cookie for dashboard access.