The Offset API enables developers to purchase CO2 offsets on behalf of their customers. The API offers methods to calculate CO2 emissions and manage projects for compensation (such as reforestation, solar panels, biodiesel, etc.), and also manage pricing, refunds, and purchases. CO2 footprints for travel, flight, hotel, bus, car, shipping, manufacturing and more. Proceeds go to a user's choice climate organization or technology startups.
From the Provider: "The Offset API is organized around REST. Our API has predictable resource-oriented URLs, accepts form-encoded request bodies, returns JSON-encoded responses, and uses standard HTTP response codes, header-based authentication, and verbs. Offset API supports multiple projects that allow for CO2 compensation. You can use projects codes in requests to override how amount is split between projects. "