> For the complete documentation index, see [llms.txt](https://docs.welkinhealth.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.welkinhealth.com/developer-and-integration-guide/api-reference/sms.md).

# SMS

The SMS API provides read access to SMS message records associated with patients.

**Base path:** `/{tenantName}/{instanceName}/patients/{patientId}/sms`

***

## Endpoints

### GET Get All SMS

**GET** `/{tenantName}/{instanceName}/patients/{patientId}/sms`

Returns all SMS messages associated with a patient.

#### Query Parameters

| Parameter   | Type    | Default | Description                       |
| ----------- | ------- | ------- | --------------------------------- |
| `page`      | integer | `0`     | Page number                       |
| `size`      | integer | `20`    | Results per page                  |
| `direction` | string  | —       | Filter by `INBOUND` or `OUTBOUND` |
| `startDate` | string  | —       | Start of date range (ISO 8601)    |
| `endDate`   | string  | —       | End of date range (ISO 8601)      |

#### Example Response `200 OK`

```json
{
  "data": [
    {
      "id": "sms-uuid",
      "patientId": "a1b2c3d4",
      "direction": "OUTBOUND",
      "body": "Your appointment is confirmed for March 20 at 2:00 PM.",
      "sentAt": "2026-03-19T09:15:00Z",
      "status": "DELIVERED",
      "hasAttachment": false
    }
  ]
}
```

***

### GET Get SMS by ID

**GET** `/{tenantName}/{instanceName}/patients/{patientId}/sms/{smsId}`

Returns a single SMS record with full message metadata.

***

### GET Download SMS Attachment

**GET** `/{tenantName}/{instanceName}/patients/{patientId}/sms/{smsId}/attachment`

Downloads the file attachment from an SMS message.

#### Response

| Header                | Value                                                               |
| --------------------- | ------------------------------------------------------------------- |
| `Content-Type`        | MIME type of the attachment (e.g., `image/jpeg`, `application/pdf`) |
| `Content-Disposition` | `attachment; filename="{originalFilename}"`                         |

> Only available for messages where `hasAttachment: true`.


---

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