From their site: OpenDOAR is constructing a comprehensive and authoritative list of institutional and subject-based repositories. The API is a machine-to-machine interface that lets third party applications run a wide variety of queries against the OpenDOAR Database and get back XML data. You can choose to receive just repository titles & URLs (suitable for OAI-PMH harvesting), or all the available OpenDOAR data, or intermediate levels of detail.
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.