InspireHEP Beta (new JSON API)
It turned out that InspireHEP is moving to a new platform and the old recjson api has not been actively maintained for a while.
InspireHEP Beta - https://labs.inspirehep.net
GitHub - https://github.com/inspirehep/inspire-next Docs - https://inspirehep.readthedocs.io/en/latest/
Read about it in this blog post: https://blog.inspirehep.net/2019/02/introducing-inspire-beta/
And a new undocumented search API with rich JSON: $ curl -H "accept: application/json" 'https://labs.inspirehep.net/api/literature/1747615'
The schema for HEP records: https://github.com/inspirehep/inspire-schemas/blob/master/inspire_schemas/records/hep.yml
Example of JSON record for URL: https://labs.inspirehep.net/api/literature/1747615 1747615.json
Edited by Мария Григорьева