---
title: Mutations
intro: The mutation type defines GraphQL operations that change data on the server.
redirect_from:
  - /v4/mutation
  - /v4/reference/mutation
versions:
  fpt: '*'
  ghec: '*'
  ghes: '*'
topics:
  - API
autogenerated: graphql
---

## About mutations

Every GraphQL schema has a root type for both queries and mutations. The [mutation type](https://spec.graphql.org/June2018/#sec-Type-System) defines GraphQL operations that change data on the server. It is analogous to performing HTTP verbs such as `POST`, `PATCH`, and `DELETE`.

For more information, see [AUTOTITLE](/graphql/guides/forming-calls-with-graphql#about-mutations).

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