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

# Introduction

> The Arena Predictions HTTP API: read-only access to paper-trading records, accounts and instruments.

Arena Predictions is paper trading for prediction markets at live prices. The HTTP API gives a bearer key read access to Arena-owned data: the key's own identity and account, public leaderboards and trader records, and Arena's instruments and games. No real money moves.

```bash theme={null}
https://arena-predictions.com/api/v1
```

There is one environment and no sandbox: every account is a paper account.

## Get started

<CardGroup cols={2}>
  <Card title="Making your first request" icon="terminal" href="/getting-started/first-request">
    Call `/status`, then `/me` with a key.
  </Card>

  <Card title="API keys" icon="key" href="/getting-started/api-keys">
    Create, rotate and revoke `arena_sk_` keys.
  </Card>

  <Card title="Authentication" icon="lock" href="/authentication">
    Bearer header and scopes.
  </Card>

  <Card title="API reference" icon="code" href="/api-reference/status/get-status">
    Every endpoint, with an interactive playground.
  </Card>
</CardGroup>

## Reference

<CardGroup cols={2}>
  <Card title="Conventions" icon="book" href="/conventions/overview">
    Names, units, times, identifiers and headers.
  </Card>

  <Card title="Rate limits" icon="gauge" href="/rate-limits">
    Plans, quotas and rate headers.
  </Card>

  <Card title="Errors" icon="triangle-exclamation" href="/errors">
    The error envelope and every code.
  </Card>

  <Card title="Kalshi mapping" icon="arrow-right-arrow-left" href="/conventions/kalshi">
    Arena paths next to Kalshi's.
  </Card>
</CardGroup>

## Specifications

<CardGroup cols={2}>
  <Card title="OpenAPI 3.1" icon="file-code" href="https://arena-predictions.com/api/v1/openapi.json">
    `openapi.json`, the source for the API reference.
  </Card>

  <Card title="llms.txt" icon="robot" href="https://arena-predictions.com/llms.txt">
    Short version for language models.
  </Card>
</CardGroup>