Laravel Passport: How to Get the oauth_access_tokens ID from a Bearer Token

When implementing OAuth 2.0 with Laravel Passport, securing endpoints using Bearer tokens is fundamental. You successfully obtain an access token, and now the critical question for any backend developer is: how do you use that token to identify who requested it or which specific record in your database it relates to?

This guide will walk you through the process of extracting necessary information from a Bearer token to retrieve related data—specifically, how to link an access token back to its corresponding entry in the oauth_access_tokens table.

Understanding the Bearer Token Structure

A Bearer token is typically a JSON Web Token (JWT). This means the token itself is self-contained and cryptographically signed. When you receive a token, it contains claims about the user, scopes, and expiration time, encoded within the token.

When using Laravel Passport, the access token received is usually an opaque string (if using database tokens) or a JWT (if using token-based authentication). To get the actual database record ID, we need to leverage the unique identifier associated with that token.

The Strategy: Linking Tokens to Database Records

The core challenge isn't just reading the token; it’s mapping the token back to your relational data. In Laravel Passport, each access token is stored in the oauth_access_tokens table, which contains a unique id.

There are two primary ways to achieve this linking:

1. Using Token ID (Recommended): If you have access to the raw token string, you can decode it (if it's a JWT) or use the unique token identifier provided by Passport to query your database directly.
2. Using Token Scopes/Claims: The payload inside the token contains user identifiers (sub claim in JWTs). You can use this identifier to perform a subsequent lookup on your users table.

For