> ## Documentation Index
> Fetch the complete documentation index at: https://deepline.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# BuiltWith: Tag Lookup

> Finding domains connected to an IP or BuiltWith tag lookup. Includes SDK V2 guidance, input constraints, response fields, and Deepline credit cost.

Finding domains connected to an IP or BuiltWith tag lookup.

> [!NOTE]
>
> Tool ID: `builtwith_tag_lookup`

## Run this action

Use the TypeScript SDK for one call. Use `ctx.tools.execute(...)` inside a Play for durable calls, scheduled calls, or CSV processing.

```ts theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
import { Deepline } from 'deepline';

const deepline = await Deepline.connect();
const result = await deepline.tools.execute(
  'builtwith_tag_lookup',
  {
    "lookup": "example"
  },
);

console.log(result.toolResponse.raw);
```

### CLI

```bash theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
deepline tools execute builtwith_tag_lookup --input '{
  "lookup": "example"
}' --json
```

## Example response

The static output schema lacks the details for a reliable example. Use `deepline describe builtwith_tag_lookup --json` for the complete live contract.

## Input reference

Find domains related to IPs or other BuiltWith tag lookups.

| Name | Type | Required | Default | Details |
| - | - | - | - | - |
| `payload.lookup` | `string` | Yes | — | IP or BuiltWith tag lookup string (for example IP-1.2.3.4). |

<details>
  <summary>Show raw input schema</summary>

  ### Input JSON Schema

  ```json theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
  {
    "type": "object",
    "description": "Find domains related to IPs or other BuiltWith tag lookups.",
    "properties": {
      "lookup": {
        "type": "string",
        "description": "IP or BuiltWith tag lookup string (for example IP-1.2.3.4)."
      }
    },
    "required": [
      "lookup"
    ],
    "additionalProperties": false
  }
  ```
</details>

## Output reference

Standard tool result payload.

| Name | Type | Required | Default | Details |
| - | - | - | - | - |
| `result.data` | `array` | Yes | — | Provider response payload. |
| `result.meta` | `record` | No | — | Additional response metadata (status, paging). |

<details>
  <summary>Show raw output schema</summary>

  ### Output JSON Schema

  ```json theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
  {
    "type": "object",
    "description": "Standard tool result payload.",
    "properties": {
      "data": {
        "type": "array",
        "description": "Provider response payload.",
        "items": {
          "type": "object",
          "additionalProperties": {}
        }
      },
      "meta": {
        "type": "object",
        "description": "Additional response metadata (status, paging).",
        "additionalProperties": {}
      }
    },
    "required": [
      "data"
    ],
    "additionalProperties": false
  }
  ```
</details>

## Deepline cost

* Pricing model: `provider_usage` (provider usage).
* Estimated Deepline credits: `0.14` per pricing unit.

## Related documentation

* [BuiltWith provider guide](https://deepline.com/docs/providers/builtwith/guide.md)
* [SDK V2 quickstart](https://deepline.com/docs/sdk-v2/quickstart.md)
* [SDK reference](https://deepline.com/docs/sdk-v2/sdk-reference.md)
* [Run tools across a CSV](https://deepline.com/docs/sdk-v2/batch-csv.md)


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