The APIs.guru API functions as a directory of open source machine-readable web APIs that conform to the OpenAPI, or Swagger 2.0, description format. It is ideally an API Wikipedia featuring a collection of open source and publicly accessible RESTful APIs. Whether free or paid, an API must be editable by anyone, exist as a community-driven project, and provide data accessibility through the REST platform to qualify for inclusion in the APIs.guru. The API weeds out non-compliant private APIs, transforms a variety of formats to the Swagger 2.0 format, and fixes errors in addition to accommodating additional data and supporting daily specifications updates. The APIs.guru API returns responses in JSON format.
Fifteen APIs have been added to the ProgrammableWeb directory in categories including Astronomy, Stocks and Gambling. Highlights today include more NASA APIs, such as the Mars Trek API, which provides images from the popular Mars Trek interactive web portal. Here's a look at the new additions.