1
Set your API key
Set the authentication headers:
2
Set your material name
This can be any name you like, but names must be unique within your MSI library.
3
Optionally set a code
Use this field if you have a unique material identifier from an external system.
4
Set the category
The category is required. This does not impact calculation but is used for classifying materials in the library.See MSI Get Material Categories for additional information.
5
Set the base materials
Each of your custom material in MSI contains reference(s) to the MSI base materials. These are referenced by a BaseMaterialId.See MSI Get Base Materials for additional information about how to retrieve a master list of base materials and their IDs.
6
Set blend percentages
For blends, simply include the percentage of each base material.

