> ## 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.

# Resend: Contacts Update

> Update a single contact by ID or email. Includes SDK V2 guidance, input constraints, response fields, and Deepline credit cost.

Update a single contact by ID or email.

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

## 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(
  'resend_contacts_update',
  {
    "id": "id_123"
  },
);

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

### CLI

```bash theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
deepline run resend_contacts_update --input '{
  "id": "id_123"
}'
```

## Example response

The SDK returns this shape at `result.toolResponse.raw`. The example values illustrate the response.

```json theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
{
  "data": {
    "object": "example",
    "id": "id_123"
  }
}
```

Use `deepline describe resend_contacts_update --json` for the latest machine-readable contract.

## Input reference

Update a single contact by ID or email

| Name | Type | Required | Default | Details |
| - | - | - | - | - |
| `payload.id` | `string` | Yes | — | The Contact ID or email address. |
| `payload.email` | `string` | No | — | Email address of the contact. |
| `payload.first_name` | `string` | No | — | First name of the contact. |
| `payload.last_name` | `string` | No | — | Last name of the contact. |
| `payload.unsubscribed` | `boolean` | No | — | The Contact's global subscription status. If set to true, the contact will be unsubscribed from all Broadcasts. |
| `payload.properties` | `record` | No | — | A map of custom property keys and values to update. |

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

  ### Input JSON Schema

  ```json theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
  {
    "type": "object",
    "description": "Update a single contact by ID or email",
    "properties": {
      "id": {
        "type": "string",
        "description": "The Contact ID or email address."
      },
      "email": {
        "type": "string",
        "description": "Email address of the contact."
      },
      "first_name": {
        "type": "string",
        "description": "First name of the contact."
      },
      "last_name": {
        "type": "string",
        "description": "Last name of the contact."
      },
      "unsubscribed": {
        "type": "boolean",
        "description": "The Contact's global subscription status. If set to true, the contact will be unsubscribed from all Broadcasts."
      },
      "properties": {
        "type": "object",
        "description": "A map of custom property keys and values to update.",
        "additionalProperties": {
          "type": [
            "string",
            "number",
            "boolean",
            "null"
          ]
        }
      }
    },
    "required": [
      "id"
    ],
    "additionalProperties": false
  }
  ```
</details>

## Output reference

Standard tool result payload.

| Name | Type | Required | Default | Details |
| - | - | - | - | - |
| `result.data` | `object` | Yes | — | Provider response payload. |
| `result.data.object` | `string` | No | — | Type of the response object. |
| `result.data.id` | `string` | No | — | Unique identifier for the updated contact. |
| `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": {
        "type": "object",
        "description": "Provider response payload.",
        "properties": {
          "object": {
            "type": "string",
            "description": "Type of the response object."
          },
          "id": {
            "type": "string",
            "description": "Unique identifier for the updated contact."
          }
        },
        "additionalProperties": false
      },
      "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

* [Connect integrations](https://deepline.com/docs/integrations.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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