> ## 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 Topics

> Update topics for a contact. Includes SDK V2 and CLI requests, input constraints, response fields, and Deepline credit cost.

Update topics for a contact.

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

## 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_topics',
  {
    "contact_id": "contact_123",
    "topics": [
      {
        "id": "id_123",
        "subscription": "opt_in"
      }
    ]
  },
);

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

### CLI

```bash theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
deepline run resend_contacts_update_topics --input '{
  "contact_id": "contact_123",
  "topics": [
    {
      "id": "id_123",
      "subscription": "opt_in"
    }
  ]
}'
```

## 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",
    "contact_id": "contact_123",
    "topics": [
      {
        "id": "id_123",
        "subscription": "opt_in"
      }
    ]
  }
}
```

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

## Input reference

Update topics for a contact

| Name | Type | Required | Default | Details |
| - | - | - | - | - |
| `payload.contact_id` | `string` | Yes | — | The Contact ID or email address. |
| `payload.topics` | `array` | Yes | — | — |

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

  ### Input JSON Schema

  ```json theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
  {
    "type": "object",
    "description": "Update topics for a contact",
    "properties": {
      "contact_id": {
        "type": "string",
        "description": "The Contact ID or email address."
      },
      "topics": {
        "type": "array",
        "items": {
          "type": "object",
          "properties": {
            "id": {
              "type": "string",
              "description": "The ID of the topic."
            },
            "subscription": {
              "type": "string",
              "description": "The subscription status (opt_in or opt_out).",
              "enum": [
                "opt_in",
                "opt_out"
              ]
            }
          },
          "additionalProperties": false
        }
      }
    },
    "required": [
      "contact_id",
      "topics"
    ],
    "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 | — | The object type. |
| `result.data.contact_id` | `string` | No | — | The ID of the contact. |
| `result.data.topics` | `array` | No | — | Array of updated topic subscriptions. |
| `result.data.topics[].id` | `string` | No | — | The ID of the topic. |
| `result.data.topics[].subscription` | `"opt_in" \| "opt_out"` | No | — | The subscription status. Allowed: `opt_in`, `opt_out`. |
| `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": "The object type."
          },
          "contact_id": {
            "type": "string",
            "description": "The ID of the contact."
          },
          "topics": {
            "type": "array",
            "description": "Array of updated topic subscriptions.",
            "items": {
              "type": "object",
              "properties": {
                "id": {
                  "type": "string",
                  "description": "The ID of the topic."
                },
                "subscription": {
                  "type": "string",
                  "description": "The subscription status.",
                  "enum": [
                    "opt_in",
                    "opt_out"
                  ]
                }
              },
              "additionalProperties": false
            }
          }
        },
        "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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