https://api.adsabs.harvard.edu/v1/export/:format
Currently, our API supports export in the following formats: AASTeX, BibTeX and EndNote. To get e.g. BibTeX for a set of records you do a POST request to the endpoint
https://api.adsabs.harvard.edu/v1/export/bibtex
with in the POST header
{"bibcode":["<bibcode1>","<bibcode2>", ...]}
Using curl, to get the BibTeX for e.g. the record with bibcode 2015ApJS..219...21Z, you would do
curl -H "Authorization: Bearer <your API token>" -H "Content-Type: application/json" -X POST -d '{"bibcode":["2015ApJS..219...21Z"]}' https://api.adsabs.harvard.edu/v1/export/bibtex
and the API then responds in JSON with
{u'msg': u'Retrieved 1 abstracts, starting with number 1. Total number selected: 1.', u'export': u'@ARTICLE{2015ApJS..219...21Z,\n author = {{Zhang}, M. and {Fang}, M. and {Wang}, H. and {Sun}, J. and \n\t{Wang}, M. and {Jiang}, Z. and {Anathipindika}, S.},\n title = "{A Deep Near-infrared Survey toward the Aquila Molecular Cloud. I. Molecular Hydrogen Outflows}",\n journal = {\\apjs},\narchivePrefix = "arXiv",\n eprint = {1506.08372},\n primaryClass = "astro-ph.SR",\n keywords = {infrared: ISM, ISM: jets and outflows, shock waves, stars: formation, stars: winds, outflows},\n year = 2015,\n month = aug,\n volume = 219,\n eid = {21},\n pages = {21},\n doi = {10.1088/0067-0049/219/2/21},\n adsurl = {http://adsabs.harvard.edu/abs/2015ApJS..219...21Z},\n adsnote = {Provided by the SAO/NASA Astrophysics Data System}\n}\n\n'}
The get AASTeX back, you use aastex as format parameter, and endnote for EndNote.