---
url: >-
  https://adk.nht.io/api/@nhtio/adk/batteries/vector/schema/interfaces/FieldChain.md
---

# Interface: FieldChain

Defined in: [batteries/vector/schema.ts:72](https://github.com/NHTIO/ADK/blob/v1.20260607.0/src/batteries/vector/schema.ts#L72)

## Methods

### index()

```ts
index(): FieldChain;
```

Defined in: [batteries/vector/schema.ts:73](https://github.com/NHTIO/ADK/blob/v1.20260607.0/src/batteries/vector/schema.ts#L73)

#### Returns

`FieldChain`

***

### nullable()

```ts
nullable(): FieldChain;
```

Defined in: [batteries/vector/schema.ts:74](https://github.com/NHTIO/ADK/blob/v1.20260607.0/src/batteries/vector/schema.ts#L74)

#### Returns

`FieldChain`