# LicenseSearcher > LicenseSearcher API documentation — query normalized, continually refreshed liquor license data across dozens of US states from one REST API. ## Docs - [Authentication](https://docs.licensesearcher.com/authentication.md): Authenticate requests with a state-scoped API key. - [Errors](https://docs.licensesearcher.com/errors.md): How the LicenseSearcher API signals success and failure. - [Introduction](https://docs.licensesearcher.com/index.md): Liquor license data, normalized and live. - [The License Object](https://docs.licensesearcher.com/liquor-licenses/license-object.md): Every field returned for a liquor license. - [Liquor Licenses](https://docs.licensesearcher.com/liquor-licenses/overview.md): Search, track, and retrieve normalized liquor license data. - [Retrieve a License](https://docs.licensesearcher.com/liquor-licenses/retrieve-a-license.md): Look up a single liquor license by state and license number. - [Search by Name or Address](https://docs.licensesearcher.com/liquor-licenses/search.md): Find liquor licenses by business name, owner, or street address. - [Quickstart](https://docs.licensesearcher.com/quickstart.md): Go from zero to your first liquor license lookup in a few minutes. - [Supported States](https://docs.licensesearcher.com/supported-states.md): States for which LicenseSearcher provides liquor license data. ## Optional - [Website](https://licensesearcher.com) - [Dashboard](https://licensesearcher.com/login)