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Gate access to any web app by email. No code changes. No passwords.

2 starsJavaScript

Agt00 – localhost sharing with an email allowlist

by cc_alex·Apr 10, 2026·1 point·0 comments
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AI Analysis

●●SolidSolve My ProblemCozy

Email-gated localhost tunnels in one command—ngrok auth but simpler.

Strengths
  • •Magic link auth bound to browser prevents link forwarding attacks
  • •Zero code changes—reverse proxy sits in front of any app
  • •SQLite sessions with instant invite and revoke commands
Weaknesses
  • •Requires Resend API key setup before first use
  • •Cloudflare Tunnel dependency means another service to manage
Target Audience

Developers sharing staging builds or localhost demos

Similar To

ngrok · Cloudflare Tunnel · Localtunnel

Post Description

Built a CLI that puts a reverse proxy in front of your local or deployed app, opens a CF tunnel and gates access behind a magic link auth for a specific list of emails.

I slapped that together bcs I'm too lazy to deploy and don't like too many eyes on my slop.

One command: agt00 start --origin http://localhost:3000 --emails [email protected] --tunnel

OSS, no accounts, no BS.

https://github.com/alex-sumin/agt00

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