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

# Datetime

> Give any model access to the current date and time

export const Template = ({children, data}) => {
  const replace = s => s.replace(/\{\{(\w+)\}\}/g, (_, k) => (k in data) ? data[k] : `{{${k}}}`);
  const leafText = node => typeof node === 'string' ? node : node?.$$typeof && typeof node.props?.children === 'string' ? node.props.children : null;
  const collapseTokens = nodes => {
    const out = [];
    let i = 0;
    while (i < nodes.length) {
      const ta = leafText(nodes[i]);
      const tb = leafText(nodes[i + 1]);
      const tc = leafText(nodes[i + 2]);
      if (ta != null && tb != null && tc != null) {
        const m = (ta + tb + tc).match(/^([\s\S]*)\{\{(\w+)\}\}([\s\S]*)$/);
        if (m && (m[2] in data)) {
          out.push(m[1] + data[m[2]] + m[3]);
          i += 3;
          continue;
        }
      }
      out.push(nodes[i]);
      i++;
    }
    return out;
  };
  const process = node => {
    if (typeof node === 'string') return replace(node);
    if (Array.isArray(node)) return collapseTokens(node.map(process));
    if (node && typeof node === 'object') {
      if (node.$$typeof) return {
        ...node,
        props: process(node.props)
      };
      return Object.fromEntries(Object.entries(node).map(([k, v]) => [k, process(v)]));
    }
    return node;
  };
  return <>{process(children)}</>;
};

export const API_KEY_REF = '<OPENROUTER_API_KEY>';

<Badge color="blue">Beta</Badge>

<Note>
  **Beta**

  Server tools are currently in beta. The API and behavior may change.
</Note>

The `openrouter:datetime` server tool gives any model access to the current date and time. This is useful for prompts that require temporal awareness — scheduling, time-sensitive questions, or any task where the model needs to know "right now."

## Quick Start

<Template
  data={{
API_KEY_REF,
MODEL: 'openai/gpt-5.2'
}}
>
  <CodeGroup>
    ```typescript title="TypeScript" expandable lines theme={null}
    const response = await fetch('https://openrouter.ai/api/v1/chat/completions', {
      method: 'POST',
      headers: {
        Authorization: 'Bearer {{API_KEY_REF}}',
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        model: '{{MODEL}}',
        messages: [
          {
            role: 'user',
            content: 'What day of the week is it today?'
          }
        ],
        tools: [
          { type: 'openrouter:datetime' }
        ]
      }),
    });

    const data = await response.json();
    console.log(data.choices[0].message.content);
    ```

    ```python title="Python" expandable lines theme={null}
    import requests

    response = requests.post(
      "https://openrouter.ai/api/v1/chat/completions",
      headers={
        "Authorization": f"Bearer {{API_KEY_REF}}",
        "Content-Type": "application/json",
      },
      json={
        "model": "{{MODEL}}",
        "messages": [
          {
            "role": "user",
            "content": "What day of the week is it today?"
          }
        ],
        "tools": [
          {"type": "openrouter:datetime"}
        ]
      }
    )

    data = response.json()
    print(data["choices"][0]["message"]["content"])
    ```

    ```bash title="cURL" lines theme={null}
    curl https://openrouter.ai/api/v1/chat/completions \
      -H "Authorization: Bearer {{API_KEY_REF}}" \
      -H "Content-Type: application/json" \
      -d '{
        "model": "{{MODEL}}",
        "messages": [
          {
            "role": "user",
            "content": "What day of the week is it today?"
          }
        ],
        "tools": [
          {"type": "openrouter:datetime"}
        ]
      }'
    ```
  </CodeGroup>
</Template>

## Configuration

The datetime tool accepts an optional `timezone` parameter:

```json lines theme={null}
{
  "type": "openrouter:datetime",
  "parameters": {
    "timezone": "America/New_York"
  }
}
```

| Parameter  | Type   | Default | Description                                                                       |
| ---------- | ------ | ------- | --------------------------------------------------------------------------------- |
| `timezone` | string | `UTC`   | IANA timezone name (e.g. `"America/New_York"`, `"Europe/London"`, `"Asia/Tokyo"`) |

## Response

When the model calls the datetime tool, it receives a response like:

```json lines theme={null}
{
  "datetime": "2025-07-15T14:30:00.000-04:00",
  "timezone": "America/New_York"
}
```

## Pricing

The datetime tool has no additional cost beyond standard token usage.

## Next Steps

* [Server Tools Overview](/guides/features/server-tools) — Learn about server tools
* [Web Search](/guides/features/server-tools/web-search) — Search the web for real-time information
* [Tool Calling](/guides/features/tool-calling) — Learn about user-defined tool calling