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

# Core

The Core plugin provides essential utility tools that are commonly needed by
[Agents](/concepts/agents) for basic operations like working with dates, times,
and calculations.

<AccordionGroup>
  <Accordion title="MCP Tools" icon="wrench">
    * **current\_datetime**: Get the current date and time in UTC
    * **convert\_to\_timezone**: Convert a datetime to a specific timezone
    * **calculate**: Evaluate a mathematical expression
  </Accordion>
</AccordionGroup>

## Configuration

Configure the Core plugin by editing the `~/.unpage/profiles/<profile_name>/config.yaml` file:

```yaml theme={null}
plugins:
  # ...
  core:
    enabled: true
```

## Tools

The Core plugin provides the following tools to Agents and MCP Clients:

<Card title="current_datetime">
  Get the current date and time in UTC.

  **Arguments**
  None

  **Returns** `datetime`: The current date and time as an ISO 8601 timestamp in UTC timezone.
</Card>

<br />

<Card title="convert_to_timezone">
  Convert a datetime to a specific timezone.

  **Arguments**

  <ParamField path="datetime" type="datetime" required>
    The datetime to convert (ISO 8601 timestamp).
  </ParamField>

  <ParamField path="timezone" type="string" required>
    The target timezone identifier (e.g., "America/New\_York", "Europe/London", "Asia/Tokyo").
    Use standard IANA timezone names.
  </ParamField>

  **Returns** `datetime`: The converted datetime as an ISO 8601 timestamp in the specified timezone.
</Card>

<br />

<Card title="calculate">
  Evaluate a mathematical expression safely.

  **Arguments**

  <ParamField path="expression" type="string" required>
    The mathematical expression to evaluate. Supports basic arithmetic operations:
    addition (+), subtraction (-), multiplication (\*), division (/), floor division (//),
    modulo (%), and exponentiation (\*\*). Example: "2 + 3 \* 4" or "(10 - 2) / 4".
  </ParamField>

  **Returns** `string`: The result of the mathematical expression as a string.
</Card>