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We invite you to try out our new beta eCFR site at We’ve made big changes to make the eCFR easier to use. Be sure to leave feedback using the 'Feedback' button on the bottom right of each page!

API Documentation

FR API Documentation provides multiple public API endpoints. Each endpoint is detailed below and can be explored interactively by clicking the 'Try it out' button. At the bottom of this page in the 'Schemas' section, valid options for various inputs such as agency names are listed in detail. APIs do not require API keys; all you need is an HTTP client or browser.