> ## 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 Cohort Bias Trend

Get historical bias time series for a coin within a specific HyperTracker cohort on Hyperliquid. Shows how positioning has shifted over time with long/short counts, values, and bias ratios. Ideal for: trend analysis, sentiment shifts, position momentum tracking.

Catalog action Blockchain Data

Get historical bias time series for a coin within a specific HyperTracker cohort on Hyperliquid. Shows how positioning has shifted over time with long/short counts, values, and bias ratios. Ideal for: trend analysis, sentiment shifts, position momentum tracking.


## At a Glance

| Field | Value |
| --- | --- |
| Action ID | `hypertracker-get-cohort-bias-trend` |
| Category | Blockchain Data |
| Connector | Not required |
| Requires gas | No |
| Funds movement | None declared |
| Tags | `hypertracker`, `hyperliquid`, `cohort`, `bias`, `trend`, `time-series`, `read` |

## Payload Schema

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `apiKey` | `string` | No | HyperTracker API key \(falls back to HYPERTRACKER_API_KEY env var\) |
| `coin` | `string` | Yes | Coin symbol to query \(e.g., BTC, ETH, SOL\). Case-insensitive. |
| `cohort` | `string` | Yes | Cohort name to query. Size cohorts: shrimp, fish, dolphin, apex predator, small whale, whale, tidal whale, leviathan. PnL cohorts: money printer, smart money, consistent grinder, humble earner, exit liquidity, semi-rekt, full rekt, giga-rekt. |
| `startTime` | `string` | Yes | Start of the time range in ISO 8601 format \(e.g., 2026-05-16T00:00:00Z\). |
| `endTime` | `string` | No | End of the time range in ISO 8601 format. Defaults to now. |
| `limit` | `number` | No | Maximum number of data points to return. |

## Result Schema

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `coin` | `string` | Yes | Coin symbol \(uppercased\) |
| `cohortName` | `string` | Yes | Human-readable cohort name |
| `dataPoints` | `array` | Yes | Time-ordered array of bias data points |

## Examples

**Workflow node**

```json
{
  "type": "hypertracker-get-cohort-bias-trend",
  "payload": {
    "coin": "example-coin",
    "cohort": "example-cohort",
    "startTime": "example-startTime"
  },
  "children": []
}
```
  **Test with API**

```bash
curl -X POST "https://api.b3os.org/v1/actions/hypertracker-get-cohort-bias-trend/test" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "inputs": {
    "coin": "example-coin",
    "cohort": "example-cohort",
    "startTime": "example-startTime"
  }
}'
```

**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.