In addition to providing a single website to FIND and APPLY for federal grants, Grants.gov also provides an extensive list of web services for Applicants and Agencies to perform these functions using our System to System (S2S) interface.   Applicants and Agencies typically integrate the Grants.gov web services into their existing Grant Management systems to provide a seamless user interface to their grants staff. 

System-to-System Interface Information

The S2S pages provide Applicants and Grantors with information on the following subject areas: 

  • Versions & WSDLs
  • Upgrading
  • Web Services
  • Schemas
  • Hashing
  • Certificates
  • Testing
  • Reference Implementation
  • Listserv
  • Troubleshooting

You can start by reading more about Applicant or Grantor System-to-System