From their site: The API allows access to the data to the Federal contracts and Federal assistance databases. All data present on USAspending.gov is available through the API, except for pie charts and end-of-search totals. The site is a re-launch of www.federalspending.gov.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.