Any request to the portal may be automated thanks to the use of REST protocol. The download of results is also automated. This service is restricted to subscribing users. Please contact sales [at] issn.org for more information.

Any user (human or machine) may decide what representation of the resource it prefers to retrieve. This is possible through content negotiation or by modifying the request URL:

- The URL http://issn.org/resource/ISSN/[ISSNnumber]/ will provide the record in an HTML human-readable format.

You can download the ISSN records in different formats:

- MARC formats: MARC21-XML, MARC21-ISO, UNIMARC-XML, UNIMARC-ISO; - CSV; - Linked data formats: RDF/XML, Turtle, JSON-LD. Records are encoded in RDF following the ISSN linked data application profile [see ISSN linked data application profile]