---
url: 'https://adk.nht.io/api/@nhtio/adk/guards/functions/isMessage.md'
---

# Function: isMessage()

```ts
function isMessage(value: unknown): value is Message;
```

Defined in: [guards.ts:55](https://github.com/NHTIO/ADK/blob/v1.20260605.0/src/guards.ts#L55)

Returns `true` if `value` is a [@nhtio/adk!Message](../../common/classes/Message.md) instance.

## Parameters

| Parameter | Type      |
| --------- | --------- |
| `value`   | `unknown` |

## Returns

`value is Message`