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

# Usage & limits

> What counts as an event, how usage alerts work, what happens at your cap, and how long your data is kept.

Usage is measured in one unit — the **event** — and your plan sets how many are included. This section
covers alerts, what happens when you reach your cap, and how long events are kept.

<CardGroup cols={2}>
  <Card title="What counts as an event" icon="calculator" href="/events-and-usage">
    The full model: a capture, a delivery, and everything that never counts.
  </Card>

  <Card title="Usage alerts & caps" icon="bell" href="/help/usage/alerts-and-caps">
    The 80% / 100% alerts, and what happens when capture pauses.
  </Card>

  <Card title="Data retention" icon="clock-rotate-left" href="/help/usage/data-retention">
    How long your events are kept before they're removed.
  </Card>

  <Card title="Plans & pricing" icon="tags" href="/help/billing/plans-and-pricing">
    Included volumes and overage.
  </Card>
</CardGroup>

## Check your usage

Your current usage shows on the dashboard and on every surface — the CLI, API, and MCP.
[Events & usage](/events-and-usage#check-your-usage) has the exact commands.