> For the complete documentation index, see [llms.txt](https://docs.safetycli.com/safety-2/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.safetycli.com/safety-2/safety-cli-2-scanner/installation-and-quick-start-safety-2.md).

# Installation & Quick Start - Safety 2

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**Existing Customers: Upgrade to Safety 3.0**

Safety 3.0 is now available, providing system-wide scanning, unpinned package support, new SBOM and JSON output formats, and more. 
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Safety 2 is the previous iteration of our industry-leading Python dependency scanner. Safety is the best way to check your Python dependencies for security vulnerabilities and other compliance risks. It's our swiss-army knife tool that can be used in a variety of ways and situations, from securing developer machines, to build pipelines and production systems.

### Installation

Safety is available for [download from PyPi](https://pypi.org/project/safety/). You can install Safety CLI directly from PyPi using the following pip command:

`pip install safety`

### Getting started

Once install, you can run a vulnerability scan on your Python dependencies in your current environment.

`safety check --key <YOUR-API-KEY>`

Or scan the dependencies in a particular requirements file:

`safety check -r requirements.txt --key <YOUR-API-KEY>`