ISNI does offer API, documentation available at http://www.isni.org/content/documents-related-database-enquiry
OCLC Research task group on representing organizations in ISNI<http://www.oclc.org/research/themes/research-collections/isni-organizations.html> will release its report soon. Supporting Linked Data is one of the issues we discussed. Stay tuned for upcoming report and webinar.
> -----Original Message-----
> From: Code for Libraries [mailto:[log in to unmask]] On Behalf
> Of Eric Lease Morgan
> Sent: Friday, April 15, 2016 5:17 AM
> To: [log in to unmask]<mailto:[log in to unmask]>
> Subject: [CODE4LIB] authority work with isni
> I am thinking about doing some authority work with content from ISNI,
> and I have a few questions about the resource.
> As yo may or may not know, ISNI is a sort of authority database. 
> One can search for an identity in ISNI, identify a person of interest,
> get a key, transform the key into a URI, and use the URI to get back
> both human- readable and machine readable data about the person. For
> example, the following URIs return the same content in different forms:
> * human-readable - http://isni.org/isni/0000000035046923
> * XML - http://isni.org/isni/0000000035046923.xml
> I discovered the former URI through a tiny bit of reading.  And I
> discovered the later URI through a simple guess. What other URIs exist?
> When it comes to the authority work, my goal is to enhance authority
> records; to more thoroughly associate global identifiers with named
> entities in a local authority database. Once this goal is
> accomplished, the library catalog experience can be enhanced, and the
> door is opened for supporting linked data initiatives. In order to accomplish the goal, I believe I can:
> 1. get a list of authority records
> 2. search for name in a global authority database (like VIAF or ISNI)
> 3. if found, then update local authority record accordingly
> 4. go to Step #2 for all records
> 5. done
> My questions are:
> * What remote authority databases are available programmatically? I
> already know of one from the Library of Congress, VIAF, and probably
> WorldCat Identities. Does ISNI support some sort of API, and if so,
> where is some documentation?
> * I believe the Library Of Congress, VIAF, and probably WorldCat
> Identities all support linked data. Does ISNI, and if so, then how is
> it implemented and can you point me to documentation?
> * When it comes to updating the local (MARC) authority records, how
> do you suggest the updates happen? More specifically, what types of
> values do you suggest I insert into what specific (MARC)
> fields/subfields? Some people advocate $0 of 1xx, 6xx, and 7xx fields.
> Other people suggest 024 subfields 2 and a. Inquiring minds would like to know.
> Fun with authorities!? And, “What’s in a name anyway?"
>  ISNI - http://isni.org
>  some documentation - http://isni.org/how-isni-works
> Eric Lease Morgan
> Lost In Rome