> For the complete documentation index, see [llms.txt](https://developer.parvenu.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.parvenu.io/enrichments/website-enrichment/list-lookup.md).

# List Lookup

Resolve a company website for every row in a Parvenu list. Asynchronous, writes results back into the list.

<mark style="color:green;">`POST`</mark> `/website_list`

{% hint style="info" %}
This is an **asynchronous** endpoint. It returns a job acknowledgement, not data. Poll `/check_list_status` until the list reports `done`, then fetch the rows with `/download_list`. Costs **0.5 credits per company**, charged only when a website is found. Each company name in the list is looked up once, and every contact at that company gets the website. Results are written to the `company_website` column.
{% endhint %}

Use this to resolve a website for every row in a list in one call, rather than looping over [Individual Lookup](/enrichments/website-enrichment/individual-lookup.md) per row.

**How companies are counted.** Contacts are grouped by their exact company name, so ten contacts at Acme cost 0.5, not 5. Different spellings count as different companies: "ServiceTitan" and "Service Titan" are two lookups. In each contact's `log`, one contact at the company shows `0.5 Credits` and the others show `Website updated (same company)` at `0 Credits`. The acknowledgement's `credits_estimated` is rows x 0.5, the most the run can cost.

**Headers**

| Name         | Value              |
| ------------ | ------------------ |
| Content-Type | `application/json` |

**Body**

| Name         | Type   | Description                                                                                                                                                                 |
| ------------ | ------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `api_key`    | string | Your API Key.                                                                                                                                                               |
| `listname`   | string | Name of the existing Parvenu list to enrich.                                                                                                                                |
| `view`       | string | Optional. Which rows of the list to process. `all` (default) processes every contact in the list; `verified` restricts the run to contacts whose email address is verified. |
| `saved_view` | string | Optional. Name of a saved view on this list. Runs only on the contacts in that view. Don't combine with `view`, `filter_stack` or `search`.                                 |

**Saved views.** To run only on the contacts in a saved view, send its name as `saved_view`. See [List Saved Views](/manage-lists/list-saved-views.md).

**Response**

The acknowledgement reports the job's `status`, which is one of `queued`, `processing`, `done`, `not_found`, `cancelled` or `error`. `done` means the job has finished. See [Response Format](/getting-started/response-format.md) for the fields every endpoint returns.

| Field                   | Description                                                   |
| ----------------------- | ------------------------------------------------------------- |
| `status`                | Job status at the moment of the acknowledgement.              |
| `job_id`                | Handle for the run, returned as a string.                     |
| `view`                  | Which rows were selected, `all` or `verified`.                |
| `fetched_count`         | Rows read from the list.                                      |
| `server_filtered_total` | Rows left after the view filter.                              |
| `truncated`             | `true` when the list was larger than `max_rows`.              |
| `credits_used`          | Credits charged by the acknowledgement itself, always 0 here. |

**Example**

{% tabs %}
{% tab title="Input" %}

```json
{
  "api_key": "your_api_key",
  "listname": "my_list"
}
```

{% endtab %}

{% tab title="Output" %}

```json
{
  "ok": true,
  "status": "queued",
  "job_id": "4e49f907-a667-4e64-b197-7ac6f809c16f",
  "server_filtered_total": 10,
  "fetched_count": 10,
  "max_rows": 5000,
  "truncated": false,
  "filter_stack_active": false,
  "search_active": false,
  "message": "queued",
  "view": "all",
  "credits_used": 0,
  "success": true
}
```

{% endtab %}

{% tab title="Error" %}

```json
{
  "status": "error",
  "error": {
    "code": "validation_error",
    "message": "state: Extra inputs are not permitted"
  },
  "success": false
}
```

{% endtab %}
{% endtabs %}

{% hint style="warning" %}
A single call processes at most **5000 rows** (`max_rows`). If `truncated` comes back `true`, the list was larger than the cap and you will need to run the job again to cover the remaining rows.
{% endhint %}

**Retrieving results**

* [Check List Status](/get-enrichment-results/check-list-status.md)
* [Download List Data](/get-enrichment-results/download-list-data.md)