Join egghead, unlock knowledge.

Want more egghead?

This lesson is for members. Join us? Get access to all 3,000+ tutorials + a community with expert developers around the world.

Unlock This Lesson
Become a member
to unlock all features

Level Up!

Access all courses & lessons on egghead today and lock-in your price for life.


    Authenticate a User with a GraphQL Mutation


    Mutations give you the ability to invoke backend functions from the client. In this lesson, we will use a mutation to authenticate a user with their username and password. Authorized users will receive a token that can be used to identify the current user in future operations.

    To follow along with these queries, go to the Pet Library GraphQL Playground.