[**ClassyFire**](http://classyfire.wishartlab.com) is a resource that allows you to automatically classify any chemical compound based on its structure. This is the repository for the ClassyFire API allows you to send requests to and pull information from the ClassyFire web server.
> >A chemical compound's classification can be retrieved in the JSON or XML format. The compound's information is accessed via the InChIkey as show in the following examples. In this example, the entity has the InChIKey=LABTWGUMFABVFG-ONEGZZNKSA-N.
> >The Query model represents the chemical structure to be classified. Its attributes are the query label and the query input.
> > >The query label is an identifier
> > >
> > > The query input contains the compound's identifier (optional) and its structural representation, separated by a comma. The chemical structure is represented either in the [Daylight SMILES](http://www.daylight.com/dayhtml/doc/theory/theory.smiles.html) or the [InChI](http://www.iupac.org/home/publications/e-resources/inchi.html) format.