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loader.io provides a RESTful API in API.Loader.io. Before using the API, you need to find the API key. This is on your account settings page. loader.io thinks you can reset the API key at any time to get a new API key and expire the old API key. Using the API, you can register and verify test domains, create and run tests, view summary result data, and access a list of IP addresses from which the loader may send requests to applications during the test. Integrate it into the build and test workflow using the API. To use the API for authentication, add a special loader io auth header to the request and add the API key as the value of that header.