> ## 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.

# Lemlist: Add To Campaign

> Add contacts to a Lemlist campaign as leads. Includes SDK V2 guidance, input constraints, response fields, and Deepline credit cost.

Add contacts to a Lemlist campaign as leads.

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

## 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(
  'lemlist_add_to_campaign',
  {
    "campaign_id": "campaign_123",
    "contacts": [
      {
        "email": "jane.doe@example.com",
        "linkedin_url": "https://www.linkedin.com/in/jane-doe",
        "first_name": "Jane"
      }
    ]
  },
);

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

### CLI

```bash theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
deepline tools execute lemlist_add_to_campaign --input '{
  "campaign_id": "campaign_123",
  "contacts": [
    {
      "email": "jane.doe@example.com",
      "linkedin_url": "https://www.linkedin.com/in/jane-doe",
      "first_name": "Jane"
    }
  ]
}' --json
```

## Example response

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

## Input reference

Lemlist add to campaign input.

| Name | Type | Required | Default | Details |
| - | - | - | - | - |
| `payload.campaign_id` | `string` | Yes | — | Minimum length: 1. |
| `payload.contacts` | `array` | Yes | — | Minimum items: 1. Maximum items: 100. |

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

  ### Input JSON Schema

  ```json theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
  {
    "type": "object",
    "description": "Lemlist add to campaign input.",
    "properties": {
      "campaign_id": {
        "type": "string",
        "minLength": 1
      },
      "contacts": {
        "type": "array",
        "minItems": 1,
        "maxItems": 100,
        "items": {
          "type": "object",
          "properties": {
            "email": {
              "type": "string",
              "description": "Contact email. At least one of email or linkedin_url is required."
            },
            "linkedin_url": {
              "type": "string",
              "description": "LinkedIn profile URL (https://linkedin.com/in/...). At least one of email or linkedin_url is required."
            },
            "first_name": {
              "type": "string"
            },
            "last_name": {
              "type": "string"
            },
            "company": {
              "type": "string"
            },
            "timezone": {
              "type": "string",
              "description": "Native lead timezone in IANA format (for example, America/Chicago). Use this contact field instead of custom_fields.timezone.",
              "minLength": 1
            },
            "personalized_subject": {
              "type": "string",
              "allowsTemplatePlaceholders": true
            },
            "personalized_body": {
              "type": "string",
              "allowsTemplatePlaceholders": true
            },
            "custom_fields": {
              "type": "object",
              "additionalProperties": {
                "anyOf": [
                  {
                    "type": "string"
                  },
                  {
                    "type": "number"
                  },
                  {
                    "type": "boolean"
                  }
                ]
              }
            },
            "firstName": {
              "type": "string"
            },
            "lastName": {
              "type": "string"
            },
            "companyName": {
              "type": "string"
            },
            "linkedinUrl": {
              "type": "string"
            }
          },
          "additionalProperties": false
        }
      }
    },
    "required": [
      "campaign_id",
      "contacts"
    ],
    "additionalProperties": false
  }
  ```
</details>

## Output reference

Standard tool result payload.

| Name | Type | Required | Default | Details |
| - | - | - | - | - |
| `result.data` | `unknown` | Yes | — | Provider response payload. |
| `result.meta` | `object` | 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": {
        "description": "Provider response payload."
      },
      "meta": {
        "type": "object",
        "description": "Additional response metadata (status, paging).",
        "additionalProperties": true
      }
    },
    "required": [
      "data"
    ],
    "additionalProperties": false
  }
  ```
</details>

## Deepline cost

* Pricing model: `fixed` (per call).
* Estimated Deepline credits: `0` per pricing unit.
* Provider-native pricing may still exist outside Deepline credit billing.

## Related documentation

* [Lemlist provider guide](https://deepline.com/docs/providers/lemlist/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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