---
title: interfaceType
codeStyle: true
---

## interfaceType

[GraphQL Docs for Interface Types](https://graphql.org/learn/schema/#input-types)

In Nexus, you do not need to redefine the interface fields on the
implementing object types, instead you may use `.implements(interfaceName)`
and all of the interface fields will be added to the type.

```ts
const Node = interfaceType({
  name: 'Node',
  definition(t) {
    t.id('id', { description: 'GUID for a resource' })
  },
})

const User = objectType({
  name: 'User',
  definition(t) {
    t.implements('Node')
  },
})
```

If you need to modify the description or resolver defined by an interface, you can call the `modify` method on `objectType` to change these after the fact.
