> ## 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.

# Agent Metrics • Rust AI Agent SDK

> AgentMetrics: Agent metrics for reporting.

# AgentMetrics

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

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

Agent metrics for reporting.

```mermaid theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
%%{init: {'theme': 'base', 'themeVariables': { 'primaryColor': '#8B0000', 'primaryTextColor': '#fff', 'primaryBorderColor': '#710101', 'lineColor': '#189AB4', 'secondaryColor': '#189AB4', 'tertiaryColor': '#fff' }}}%%

graph LR
    input["Input Data"] --> agent["Agent: AgentMetrics"]
    agent --> output["Output Result"]
    style agent fill:#8B0000,color:#fff
    style input fill:#8B0000,color:#fff
    style output fill:#8B0000,color:#fff
```

## Fields

| Name                   | Type                | Description                  |
| ---------------------- | ------------------- | ---------------------------- |
| `requests`             | `u64`               | Number of requests processed |
| `errors`               | `u64`               | Number of errors             |
| `avg_response_time_ms` | `f64`               | Average response time in ms  |
| `tokens_used`          | `u64`               | Token usage                  |
| `custom`               | `HashMap&lt;String` | Custom metrics               |

## Methods

### `new`

```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
fn new() -> Self
```

Create new metrics

### `custom`

```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
fn custom(mut self, key: impl Into<String>, value: f64) -> Self
```

Add a custom metric

**Parameters:**

| Name    | Type                      |
| ------- | ------------------------- |
| `key`   | `impl Into&lt;String&gt;` |
| `value` | `f64`                     |

## Source

<Card title="View on GitHub" icon="github" href="https://github.com/MervinPraison/PraisonAI/blob/main/src/praisonai-rust/praisonai/src/protocols/mod.rs#L321">
  `praisonai/src/protocols/mod.rs` at line 321
</Card>

***

## Related Documentation

<CardGroup cols={2}>
  <Card title="Rust Agent" icon="robot" href="/docs/rust/agent" />

  <Card title="Rust Overview" icon="book-open" href="/docs/rust/overview" />

  <Card title="Rust Quickstart" icon="rocket" href="/docs/rust/quickstart" />

  <Card title="Rust Installation" icon="download" href="/docs/rust/installation" />

  <Card title="Rust Autonomy" icon="wand-magic-sparkles" href="/docs/rust/autonomy" />
</CardGroup>