> ## Documentation Index
> Fetch the complete documentation index at: https://docs.b3os.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Lighter Get Markets

Get available markets on Lighter (zk-orderbook perp DEX) with trading parameters and live stats. Returns symbol, market id, price/size decimals, minimum order amounts, fees, max leverage, last price, open interest, and 24h volume; filter by marketId, symbol, or marketType (perp/spot/all, default perp). Ideal for: building market selectors, validating order parameters, and monitoring market activity.

![Lighter Get Markets logo](https://cdn.b3.fun/lighter-logo.png)
Catalog action Lighter

Get available markets on Lighter (zk-orderbook perp DEX) with trading parameters and live stats. Returns symbol, market id, price/size decimals, minimum order amounts, fees, max leverage, last price, open interest, and 24h volume; filter by marketId, symbol, or marketType (perp/spot/all, default perp). Ideal for: building market selectors, validating order parameters, and monitoring market activity.


## At a Glance

| Field | Value |
| --- | --- |
| Action ID | `lighter-get-markets` |
| Category | Lighter |
| Connector | Not required |
| Requires gas | No |
| Funds movement | None declared |
| Tags | `perps`, `trading`, `dex`, `market-data` |

## Payload Schema

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `marketId` | `number` | No | Fetch a single market by Lighter market id \(e.g. 0 = ETH perp\). Takes precedence over marketType and symbol. |
| `symbol` | `string` | No | Filter to a single symbol, case-insensitive \(e.g. ETH, BTC, SOL\). Omit for all markets. |
| `marketType` | `string` | No | Which market list to return. Defaults to perp \(Lighter's primary product\). |

## Result Schema

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `markets` | `array` | Yes | Lighter markets sorted by marketId ascending |

## Examples

**Workflow node**

```json
{
  "type": "lighter-get-markets",
  "payload": {
    "marketId": 1,
    "symbol": "ETH",
    "marketType": "perp"
  },
  "children": []
}
```
  **Test with API**

```bash
curl -X POST "https://api.b3os.org/v1/actions/lighter-get-markets/test" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "inputs": {
    "marketId": 1,
    "symbol": "ETH",
    "marketType": "perp"
  }
}'
```

**Use expressions for dynamic values**

Payload fields can use workflow expressions such as `{{$trigger.body.amount}}`, `{{$nodes.fetch.result.price}}`, and `{{$props.asset}}` when the value should come from a trigger, prior node, or reusable workflow prop.