Tokens - Auth0 Docs
https://auth0.com/docs/secure/tokensAccess tokens Access tokens (which aren't always JWTs) are used to inform an API that the bearer of the token has been authorized to access the API and perform a predetermined set of actions (specified by the scopes granted).
Bearer Tokens - OAuth 2.0 Simplified
www.oauth.com › bearer-tokensAug 17, 2016 · 21.4. In OAuth 1, there are two components to the access token, a public and private string. The private string is used when signing the request, and never sent across the wire. The most common way of accessing OAuth 2.0 APIs is using a “Bearer Token”. This is a single string which acts as the authentication of the API request, sent in an HTTP “Authorization” header.