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

# Playground

> Try venue endpoints from the docs. Same HMAC headers as production.

Fill `DX-ACCESS-KEY`, `DX-ACCESS-TIMESTAMP`, and `DX-ACCESS-SIGNATURE`, then Send. This page hits production.

Every endpoint in API Reference has the same Try-it panel. Start here, then jump to the call you actually need.

| Need          | Playground                                                         |
| ------------- | ------------------------------------------------------------------ |
| Current round | [GET /v1/rounds](/api-reference/overview)                          |
| Book          | [GET /v1/markets/\{market\_id}/orderbook](/api-reference/overview) |
| Place         | [POST /v1/portfolio/orders](/api-reference/overview)               |
| Cancel-all    | [DELETE /v1/portfolio/orders](/api-reference/overview)             |

Signing: [Authentication](/quickstart/authentication). Errors: [Errors](/concepts/errors).