Hi Eric,

Unpaywall is a great source for checking OA status. With DOIs, you may also use OpenRefine to extract OA status and other information from Unpaywall. This article (https://yiwenthelibrarian.wordpress.com/2021/04/05/openrefine-example-1-how-to-identify-the-of-open-access-papers-published-by-staff-at-your-organisation-using-openrefine-and-the-unpaywall-api/) has detailed instructions. 

Best,
Jingjing Wu
Texas Tech University Libraries

-----Original Message-----
From: Code for Libraries <[log in to unmask]> On Behalf Of Jessica Hymers
Sent: Thursday, January 26, 2023 10:26 AM
To: [log in to unmask]
Subject: Re: [CODE4LIB] check for open access

This email originated outside TTU. Please exercise caution<https://askit.ttu.edu/phishing>!


Hi Eric,
If you have DOI you could try querying Unpaywall <https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Funpaywall.org%2F&data=05%7C01%7Cjingjing.wu%40TTU.EDU%7C3c2bda9abe4b4b46395108daffba25c8%7C178a51bf8b2049ffb65556245d5c173c%7C0%7C0%7C638103472208297361%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=M4TsaTreci77dU%2BVZGEftPoukUOWRr83oro3gUYE0KY%3D&reserved=0> and I think Open Access Button <https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fopenaccessbutton.org%2F&data=05%7C01%7Cjingjing.wu%40TTU.EDU%7C3c2bda9abe4b4b46395108daffba25c8%7C178a51bf8b2049ffb65556245d5c173c%7C0%7C0%7C638103472208297361%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=1VZPVQjnucBB%2BI0nGRpbZ0L33O60tEx8gPOQZtMRxjw%3D&reserved=0> might work with metadata other than DOI as well.
Cheers
Jessica
University of Toronto

On Thu, Jan 26, 2023 at 11:16 AM Eric Lease Morgan <[log in to unmask]> wrote:

> Given bibliographic metadata such as author, article title, journal 
> title, date, etc., how can one programmatically go about learning 
> whether or not the given article has been published as open access? I 
> suppose I could query something like SHERPA. No? What might you 
> suggest? --Eric Morgan, University of Notre Dame
>