LookFirst

See what code does before you run it.

GitHub

Copied code from an AI assistant, a forum or a tutorial? LookFirst reads it, without running it, and shows what it would build or touch: servers, open ports, files on your computer, websites it talks to, packages it installs. Then it explains the risks in plain English.

Everything happens in your browser. Your code is not sent anywhere: this page can only load its own files.

Loading the reader…

Use it where your code is

VS Code

Checks files as you open, save or paste them, puts the problems in the editor, and can ask the AI you already use to explain and fix them. Download

Pull requests

A GitHub Action marks problems on the changed lines and sums them up in the pull request. How to add it

Command line

One program for Windows, macOS and Linux: lookfirst read ./infra. Download

LookFirst tells you what it found by reading the code. It cannot promise that code is safe: code written to hide what it does can get past any tool that only reads it.