> Fetch clean Markdown by appending `.md` to any page URL under https://signalwire.com/docs or requesting it with the HTTP header `Accept: text/markdown`. The root index at https://signalwire.com/docs/llms.txt lists the available documentation indexes.

# aiMessage

> Send a message to an active AI agent session.

[ai]: /docs/server-sdks/reference/typescript/relay/call/ai

Send a message to an active AI agent session on the call. Use this to inject
context, instructions, or simulated user input into a running AI conversation.

> **Note**
>
> This method requires an active AI session started via
> [`ai()`][ai]. Calling it without
> an active session has no effect.

## **Parameters**

**`messageText`** `string | undefined`

The message text to send to the AI agent.

---

**`role`** `string | undefined`

The role of the message sender. Valid values:

* `"user"` -- simulate user input
* `"system"` -- send a system-level instruction
* `"assistant"` -- inject an assistant response

---

**`reset`** `Record<string, unknown> | undefined`

Reset configuration. Allows resetting AI state such as the conversation
history or functions.

---

**`globalData`** `Record<string, unknown> | undefined`

Update the global data accessible to the AI and SWAIG functions.

---

## **Returns**

`Promise<Record<string, unknown>>` -- Server response confirming the message was sent.

## **Example**

```typescript {19}
import { RelayClient } from '@signalwire/sdk';

const client = new RelayClient({
  project: process.env.SIGNALWIRE_PROJECT_ID!,
  token: process.env.SIGNALWIRE_API_TOKEN!,
  contexts: ['default']
});

client.onCall(async (call) => {
  await call.answer();

  // Start an AI agent
  const action = await call.ai({
    prompt: { text: 'You are a helpful assistant.' },
  });

  // Inject a system message after 10 seconds
  await new Promise((resolve) => setTimeout(resolve, 10_000));
  await call.aiMessage({
    messageText: 'The caller is a VIP customer. Be extra helpful.',
    role: 'system',
  });

  await action.wait();
});

await client.run();
```

> Send a message to an active AI agent session.