---
title: Extending the schema
summary: Add new functionality to the schema
icon: code
---

In this section of the documentation, we'll look at some advanced
features for developers who want to extend their GraphQL server
using custom models, middleware, and new operations.

[info]
You are viewing docs for silverstripe/graphql 4.x.
If you are using 3.x, documentation can be found
[in the github repository](https://github.com/silverstripe/silverstripe-graphql/tree/3)
[/info]

[CHILDREN]