> ## Documentation Index
> Fetch the complete documentation index at: https://praison.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# LLM Message • Rust AI Agent SDK

> LlmMessage: An LLM message.

# LlmMessage

> Defined in the [**protocols**](../modules/protocols) module.

<Badge color="orange">Rust AI Agent SDK</Badge>

An LLM message.

## Fields

| Name      | Type     | Description     |
| --------- | -------- | --------------- |
| `role`    | `String` | Message role    |
| `content` | `String` | Message content |

## Methods

### `system`

```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
fn system(content: impl Into<String>) -> Self
```

Create a system message

**Parameters:**

| Name      | Type                      |
| --------- | ------------------------- |
| `content` | `impl Into&lt;String&gt;` |

### `user`

```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
fn user(content: impl Into<String>) -> Self
```

Create a user message

**Parameters:**

| Name      | Type                      |
| --------- | ------------------------- |
| `content` | `impl Into&lt;String&gt;` |

### `assistant`

```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
fn assistant(content: impl Into<String>) -> Self
```

Create an assistant message

**Parameters:**

| Name      | Type                      |
| --------- | ------------------------- |
| `content` | `impl Into&lt;String&gt;` |

## Source

<Card title="View on GitHub" icon="github" href="https://github.com/MervinPraison/PraisonAI/blob/main/src/praisonai-rust/praisonai/src/protocols/mod.rs#L164">
  `praisonai/src/protocols/mod.rs` at line 164
</Card>

***

## Related Documentation

<CardGroup cols={2}>
  <Card title="Rust LLM" icon="microchip" href="/docs/rust/llm" />

  <Card title="Rust Providers" icon="server" href="/docs/rust/providers" />

  <Card title="Rust Failover" icon="shield" href="/docs/rust/failover" />
</CardGroup>