I would take a look at this:

https://www.oclc.org/developer/develop/web-services/fast-api/assign-fast.en.html

or else browse our other APIs:

https://www.oclc.org/developer/develop/web-services.en.html

For example, Classify.
Roy

On Mon, Apr 27, 2015 at 10:37 AM, Anna Headley <[log in to unmask]> wrote:

> Hm, okay, so I could use the search API to get the FAST headings off of a
> given record?
>
> But there is no service for submitting an LCSH and receiving a FAST
> equivalent.
>
> Thanks!!
> Anna
>
>
> On Mon, Apr 27, 2015 at 1:34 PM, Roy Tennant <[log in to unmask]> wrote:
>
> > For what it's worth, FAST headings are now attached to all OCLC records,
> > and are visible in the linked data representation that you can see on
> > WorldCat.org records.
> > Roy
> >
> > On Mon, Apr 27, 2015 at 10:27 AM, Eoghan Ó Carragáin <
> > [log in to unmask]> wrote:
> >
> > > Hi Anna,
> > >
> > > No, I didn't do much with FAST in the end. I can't recall a particular
> > > reason; I think it just dropped off the radar.
> > > Cheers,
> > > Eoghan
> > > Hi Eoghan!
> > >
> > > Resurrecting this from years ago. Did you pursue this to any
> satisfactory
> > > result??
> > >
> > > Thanks!
> > > Anna
> > >
> > >
> > >
> > > On Fri, Mar 1, 2013 at 8:35 AM, Eoghan Ó Carragáin <
> > > [log in to unmask]> wrote:
> > >
> > > > Hi,
> > > > I'm experimenting with the FAST authority data from OCLC [1].
> > > >
> > > > The fast converter tool is very useful [2] for testing with batches
> of
> > > > local records but I'm interested in converting bibs as part of a
> > regular
> > > > indexing workflow. Does anyone know of a FAST converter tool that can
> > be
> > > > incorporated into a local application, or can anyone point me to the
> > > > algorithm used by OCLC to carry out the conversion?
> > > >
> > > > Thanks in advance,
> > > > Eoghan
> > > >
> > > > [1] http://www.oclc.org/research/activities/fast.html
> > > > [2] http://experimental.worldcat.org/fast/fastconverter/
> > > >
> > >
> >
>