Access to NextProt index

[ghbillings]

Hi,
We are hoping to integrate the NextProt peptide uniqueness checker into a workflow and would prefer to avoid using the API. To do so, we need an index, but documentation on that process is sparse. Would you be able to provide a link to the latest version of the index used by the online portal (e.g. the input to the pepx --search program)?
Thanks!

[ghbillings]

Following up on this--we would greatly appreciate either the current NextProt index or more detailed instructions on building one (e.g. what is the schema for the json variants file, etc)