---
url: >-
  https://adk.nht.io/api/@nhtio/adk/batteries/llm/claude_code_cli/wire/interfaces/WrapperMessageDeltaEvent.md
description: A streamed chunk of assistant text or reasoning.
---

# Interface: WrapperMessageDeltaEvent

Defined in: [src/batteries/llm/claude\_code\_cli/wire.ts:211](https://github.com/NHTIO/ADK/blob/v1.20261003.0/src/src/batteries/llm/claude_code_cli/wire.ts#L211)

A streamed chunk of assistant text or reasoning.

## Properties

| Property                                       | Type              | Description                                                                 | Defined in                                                                                                                                          |
| ---------------------------------------------- | ----------------- | --------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------- |
|  `delta`            | `string`          | The incremental text chunk.                                                 | [src/batteries/llm/claude\_code\_cli/wire.ts:217](https://github.com/NHTIO/ADK/blob/v1.20261003.0/src/src/batteries/llm/claude_code_cli/wire.ts#L217) |
|  `id`                  | `string`          | Identifier correlating deltas belonging to the same in-progress message.    | [src/batteries/llm/claude\_code\_cli/wire.ts:215](https://github.com/NHTIO/ADK/blob/v1.20261003.0/src/src/batteries/llm/claude_code_cli/wire.ts#L215) |
|  `isComplete?` | `boolean`         | Set on the final delta for this message id.                                 | [src/batteries/llm/claude\_code\_cli/wire.ts:219](https://github.com/NHTIO/ADK/blob/v1.20261003.0/src/src/batteries/llm/claude_code_cli/wire.ts#L219) |
|  `type`              | `"message_delta"` | Discriminant for the [WrapperEvent](../type-aliases/WrapperEvent.md) union. | [src/batteries/llm/claude\_code\_cli/wire.ts:213](https://github.com/NHTIO/ADK/blob/v1.20261003.0/src/src/batteries/llm/claude_code_cli/wire.ts#L213) |