> ## 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.

# Get CVD History

Retrieve Cumulative Volume Delta (CVD) history for a specific trading pair on futures markets. CVD measures the net buying pressure (buy volume - sell volume) over time. Ideal for: order flow analysis, detecting accumulation/distribution, identifying divergences with price.

![Get CVD History logo](https://ai-icon.b3.fun/logo/coinglass)
Catalog action Blockchain Data

Retrieve Cumulative Volume Delta (CVD) history for a specific trading pair on futures markets. CVD measures the net buying pressure (buy volume - sell volume) over time. Ideal for: order flow analysis, detecting accumulation/distribution, identifying divergences with price.


## At a Glance

| Field | Value |
| --- | --- |
| Action ID | `coinglass-get-cvd` |
| Category | Blockchain Data |
| Connector | Not required |
| Requires gas | No |
| Funds movement | None declared |
| Tags | `coinglass`, `cvd`, `volume`, `futures`, `orderflow`, `read` |

## Payload Schema

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `exchange` | `string` | Yes | Exchange name \(e.g., Binance, OKX\) |
| `symbol` | `string` | Yes | Trading pair symbol \(e.g., BTCUSDT\) |
| `interval` | `string` | Yes | Time interval: 1m, 3m, 5m, 15m, 30m, 1h, 2h, 4h, 6h, 8h, 12h, 1d, 1w |
| `limit` | `number` | No | Number of results \(default: 1000, max: 4500\) |
| `startTime` | `number` | No | Start timestamp in seconds |
| `endTime` | `number` | No | End timestamp in seconds |

## Result Schema

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `exchange` | `string` | Yes | Exchange name |
| `symbol` | `string` | Yes | Trading pair symbol |
| `interval` | `string` | Yes | Time interval |
| `dataPoints` | `array` | Yes | Array of CVD data points |

## Examples

**Workflow node**

```json
{
  "type": "coinglass-get-cvd",
  "payload": {
    "exchange": "example-exchange",
    "symbol": "ETH",
    "interval": "1m"
  },
  "children": []
}
```
  **Test with API**

```bash
curl -X POST "https://api.b3os.org/v1/actions/coinglass-get-cvd/test" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "inputs": {
    "exchange": "example-exchange",
    "symbol": "ETH",
    "interval": "1m"
  }
}'
```

**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.