# Semrush Sensor Ranks

Returns Semrush Sensor volatility rows for the rolling 31-day window. Without filters the full daily matrix is returned (served from a 24 h cache); pass db, category, and date to filter. Scores run 0-10, where higher means more SERP movement.

- **Documentation:** [https://scrappa.co/docs/semrush-api/semrush_sensor_ranks](https://scrappa.co/docs/semrush-api/semrush_sensor_ranks)
- **API group:** Semrush API
- **Endpoint:** `GET https://scrappa.co/api/semrush/sensor/ranks`

## Authentication

Send your Scrappa API key in the `X-API-KEY` request header. Paid endpoints also support accountless x402 payments when called without an API key.

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `db` | string | No | Sensor database, e.g. US, UK, DE, or a MOBILE-* variant such as MOBILE-US. See the facets endpoint for the full list. |
| `category` | integer | No | Sensor category id (1-25). See the facets endpoint for the full list. |
| `date` | string | No | Day in YYYY-MM-DD format (rolling 31-day window). |

## Example request

```bash
#!/bin/bash

curl -X GET \
    -H "x-api-key: YOUR_API_KEY_HERE" \
    "https://scrappa.co/api/semrush/sensor/ranks?db=US&category=1"
```

## Example response

```json
{
    "search_parameters": {
        "engine": "semrush_sensor_ranks",
        "db": "US",
        "category": 1
    },
    "rows": [
        {
            "date": "2026-07-28",
            "rank": 6.4,
            "db": "US",
            "category": 1
        }
    ],
    "row_count": 31,
    "filters": {
        "db": "US",
        "category": 1
    }
}
```

## Errors

| Status | Error | Description |
| --- | --- | --- |
| 422 | Validation Error | A parameter failed validation. |
| 503 | Semrush Upstream Unavailable | Semrush could not be fetched through the configured proxy pool after the full attempt budget. Never charged. |

## More Scrappa resources

- [API documentation](https://scrappa.co/docs)
- [Full LLM-readable API reference](https://scrappa.co/llms-full.txt)
- [OpenAPI specification](https://scrappa.co/docs/api.json)
- [Pricing](https://scrappa.co/pricing)