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

# One Unified Key

> A single master key for every provider.

Traditionally, connecting an agent to the outside world means signing up for many
separate APIs — each with its own account, auth flow, rate limits, and invoice.
AgentKey replaces all of that with **one master key**.

## What the key handles

<CardGroup cols={2}>
  <Card title="Authentication" icon="lock">
    One credential authorizes every category. No per-provider OAuth or API-key
    juggling.
  </Card>

  <Card title="Routing" icon="route">
    AgentKey routes each call to the right upstream provider — and to a backup if
    one is down.
  </Card>

  <Card title="Billing" icon="receipt">
    All usage is covered by one subscription and one invoice.
  </Card>

  <Card title="Management" icon="sliders">
    Create, rotate, and monitor keys from a single dashboard.
  </Card>
</CardGroup>

## The "before and after"

**Before AgentKey** — your agent is smart but can't reach anything: no live
Twitter data, only surface-web search, no crypto context.

**After AgentKey** — one key, and the agent gets real-time social data, deep web
scraping, market feeds, and more, with automatic failover when a provider goes
down.

<Card title="Auto Failover" icon="shuffle" href="/concepts/auto-failover">
  How AgentKey keeps your agent running when a provider goes offline.
</Card>