you will indemnify npm its officers directors employees representatives and agents and hold them harmless for all liability expenses damages and costs from any third party claims demands lawsuits or other proceedings alleging that your content your use of npm services or both violate the intellectual property right of a third party this agreement or applicable law.
you agree to defend indemnify and hold the service harmless in case of a claim related to your use of the service.
I have no clue what indemnify means --- 
You agree to defend, indemnify, and hold the service harmless in case of a claim related to your use of the service
{'npm.im', 'npmjs.com', 'npmjs.org'}