A developer has created Sapo, a command-line interface (CLI) tool designed to scan npm packages prior to installation, addressing the growing concern of supply chain attacks. The impetus for Sapo stems from the inherent risks associated with the npm install command, which executes code from potentially untrusted sources on a developer's machine. The tool aims to mitigate risks such as the event-stream incident and ua-parser-js malware, which have demonstrated the vulnerability of developers to malicious packages.

Sapo intercepts install commands, allowing it to identify and block potentially harmful packages, including those employing typosquatting techniques. This proactive approach offers a crucial layer of security, safeguarding sensitive information like environment variables, SSH keys, and cloud credentials. The tool's availability on GitHub and its dedicated website provide accessibility and transparency, encouraging wider adoption within the developer community and reinforcing the importance of secure coding practices.