API Monogram is a voluntary licensing program that facilitates the consistent manufacturing of product that conforms to applicable API Specifications. Licensed manufacturers are given the authority to apply the API Monogram registered mark to equipment that meets the requirements.

Licensees demonstrate that they have a quality management system that is compliant with API Spec Q1 - an industry-leading quality management standard. API Spec Q1 meets most of the ISO 9001 requirements, in addition to requirements that are geared specifically for the oil and natural gas industry.