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

# DEX Limits

> OI caps and transfer limits for builder-deployed DEXes

## Endpoint

```
GET /v2/perp-dex-limits?dex={name}
```

| Param | Required | Description                         |
| ----- | -------- | ----------------------------------- |
| `dex` | Yes      | DEX short name (e.g., `xyz`, `flx`) |

Returns `null` for the native HyperLiquid DEX (no builder-level limits).

## Response

```json theme={null}
{
  "totalOiCap": "6000000000.0",
  "oiSzCapPerPerp": "20000000000.0",
  "maxTransferNtl": "1600000000.0",
  "coinToOiCap": [
    ["xyz:AAPL", "50000000.0"],
    ["xyz:AMD", "50000000.0"],
    ["xyz:GOLD", "100000000.0"]
  ]
}
```

| Field            | Type   | Description                                                     |
| ---------------- | ------ | --------------------------------------------------------------- |
| `totalOiCap`     | string | Maximum total open interest across all assets on this DEX (USD) |
| `oiSzCapPerPerp` | string | Default per-asset OI cap (USD)                                  |
| `maxTransferNtl` | string | Maximum single transfer notional (USD)                          |
| `coinToOiCap`    | array  | Per-asset OI cap overrides as `[coin, cap]` pairs               |

## Examples

```bash theme={null}
# XYZ DEX limits ($6B total OI cap)
curl -H "x-api-key: YOUR_KEY" "https://hyper.polynode.dev/v2/perp-dex-limits?dex=xyz"

# Felix DEX limits ($200M total OI cap)
curl -H "x-api-key: YOUR_KEY" "https://hyper.polynode.dev/v2/perp-dex-limits?dex=flx"
```