TITLE: Automatically generate BibTeX item from arxiv
QUESTION [8 upvotes]: I'm looking for a tool which generates a BibTeX item for a given arxiv id. I only found http://www.crcg.de/arXivToBibTeX/ using Google but this tool always tells me that the arxiv ids I enter don't exist which is of course not true.
Edit: For example http://www.crcg.de/arXivToBibTeX/?q=1503.06747&format=bibtex gives the error message "No paper with the ID “1503.06747” could be found on the arXiv." even though it exists: http://arxiv.org/abs/1503.06747
Edit (by author of the discussed arXiv2BibTeX tool): Sorry for the inconvenience! The feedback website didn’t send us the e-mails with notes about the problem, so it took a while to discover your feedback. The tool is working again now at https://arxiv2bibtex.org/ with a proper github issue tracker at https://github.com/ssp/arXivToBibTeX/issues .

REPLY [2 votes]: If you use a Mac, you may find the following arXiv to BibDesk applescript based solution useful. 
In summary, suppose you are at an arXiv page for a paper. Then, an execution of the above script does the following:

Downloads the PDF from arXiv into a folder managed by BibDesk (to a running instance)
Adds a bibliographic entry to BibDesk 

Moreover, since this is BibDesk you can generate a "cite key" of your choice by pressing CMD-K, and also rename the arXiv PDF as per paper title / author names if you want.