# Bring a Trailer Filters API Documentation

Retrieve the full Bring a Trailer filter taxonomy in one response: 21 groups covering make_or_model (421 options with nested models), category (40), era (14), origin (14), location_country (37), sale_status, sort, auction_type, bid ranges and more. The term IDs feed straight back into the search endpoint.

- **Documentation:** [https://scrappa.co/docs/bring-a-trailer-api/bring_a_trailer_filters](https://scrappa.co/docs/bring-a-trailer-api/bring_a_trailer_filters)
- **API group:** Bring a Trailer API
- **Endpoint:** `GET https://scrappa.co/api/bring-a-trailer/v1/auctions/filters`

## 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.

## Example request

```bash
#!/bin/bash

curl -X GET \
    -H "x-api-key: YOUR_API_KEY_HERE" \
    "https://scrappa.co/api/bring-a-trailer/v1/auctions/filters"
```

## Example response

```json
{
    "success": true,
    "data": {
        "groups": [
            {
                "id": "make_or_model",
                "label": "make_or_model",
                "required": false,
                "options": [
                    {
                        "value": 55020088,
                        "label": "Abarth",
                        "options": [
                            {
                                "value": 65064925,
                                "label": "750 & 850"
                            }
                        ]
                    }
                ]
            }
        ]
    },
    "meta": {
        "endpoint_family": "filters"
    }
}
```

## Errors

| Status | Error | Description |
| --- | --- | --- |
|  | A public parameter is invalid. This response is not billable. |  |
|  | Bring a Trailer returned an unexpected response. This response is not billable. |  |
|  | Bring a Trailer did not return usable data for this request. This response is not billable. |  |

## 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)