The npm package 'nolimit-agent' is a malicious toolkit designed for mass-mail and SMS spam campaigns, including phishing. It uses heavy JavaScript obfuscation to evade detection and includes features such as bulk SMTP sending, SMS via carrier email gateways, and contact harvesting via OAuth flows against Microsoft and Google APIs. The package collects OAuth tokens locally and uses them to enumerate contacts for spam targeting. It also performs license verification over unencrypted HTTP. Installing or running this package compromises the host machine, turning it into a platform for outbound abuse. Removal of the package does not guarantee full remediation due to potential persistent compromise.