GET
/
notifications?app_id=
{app_id}
&limit=
{limit}
&offset=
{offset}
&kind=
{kind}
&template_id=
{template_id}
&time_offset=
{time_offset}
View messages
curl --request GET \
  --url 'https://api.onesignal.com/notifications?app_id={app_id}&limit={limit}&offset={offset}&kind={kind}&template_id={template_id}&time_offset={time_offset}' \
  --header 'Authorization: <authorization>'
{
  "total_count": 123,
  "time_offset": "<string>",
  "next_time_offset": 123,
  "offset": 123,
  "limit": 123,
  "notifications": [
    {
      "app_id": "<string>",
      "big_picture": "<string>",
      "canceled": true,
      "chrome_web_icon": "<string>",
      "chrome_web_image": "<string>",
      "name": "<string>",
      "contents": {
        "en": "<string>"
      },
      "converted": 123,
      "data": {},
      "delayed_option": "<string>",
      "delivery_time_of_day": "<string>",
      "remaining": 123,
      "errored": 123,
      "excluded_segments": [
        "<any>"
      ],
      "failed": 123,
      "global_image": "<string>",
      "headings": {},
      "id": "<string>",
      "included_segments": [
        "<any>"
      ],
      "ios_badgeCount": 123,
      "ios_badgeType": "<string>",
      "queued_at": 123,
      "send_after": 123,
      "completed_at": 123,
      "successful": 123,
      "received": 123,
      "filters": {},
      "template_id": "<string>",
      "url": "<string>",
      "web_url": "<string>",
      "app_url": "<string>",
      "platform_delivery_stats": {},
      "throttle_rate_per_minute": 123,
      "fcap_status": "<string>",
      "outcomes": {}
    }
  ]
}

​
Overview

The View messages API allows you to fetch data from up to 50 push, email, or SMS message at a time. If you want to get a single message’s data, use the View message API. In most cases, you will likely want to use Event Streams instead. Currently this API does not provide Journey-sent messages. See Journey analytics for details. Messages sent through the API are only accessible 30 days after creation; however, messages sent using the OneSignal dashboard are accessible for the app’s lifetime. See our Rate limits for details on how often you can pull your message data with this API.

​
How to use this API

​
Standard Pagination

Using the limit and offset parameters you can make multiple requests to page through the notifications for an app. You can pull a maximum of 50 messages at a time and with each request, use limit to specify the result size and offset to increment by the limit value each time. The defaultlimit if not specified is 50. For example, your first request can have offset=0, second request will have offset=50, third request offset=100, etc. Pagination queries using limit and offset are convenient but can suffer from poor latency especially as the offset value grows. Therefore standard pagination is not well suited to any ETL use cases. Consider using Event Streams instead.

​
Optimized Pagination - Time Offset

To efficiently retrieve all available messages for an app, use time_offset-based pagination. When time_offset is specified, the sort order changes from descending to ascending, meaning the oldest messages appear first based on the send_after date.

​
time_offset Accepted Values

  • ISO8601 formatted timestamp – e.g., 2025-01-01T00:00:00.000Z (January 1st, 2025, at 12:00 AM UTC).
  • Base64 integer token – provided in the API response.
1

Initial Fetch

To fetch messages from a specific date onward, set time_offset to an ISO8601 formatted timestamp. For example, to retrieve messages sent since January 1st, 2025 - time_offset=2025-01-01T00:00:00.000Z

ISO8601 formatted timestamp

Important Notes:
  • time_offset cannot be used with the standard offset parameter.
  • It excludes messages that match the exact timestamp to avoid duplicates.
  • Messages created through our API are typically retained for 30 days.
  • The response includes next_time_offset, a cursor token for the next page. No decoding of the token required. For example: "next_time_offset": "MjAyNS0wMi0xOVQxOToxNjo0OS41Njg5NTFaIzQ2ZWVjMTAzLWQ5OGYtNGQzZC04MzA5LWQxNWI1M2QzMjQ5Nw=="
2

Fetch Additional Pages

Use next_time_offset from the previous response as the time_offset value in the next request. For example time_offset=MjAyNS0wMi0xOVQxOToxNjo0OS41Njg5NTFaIzQ2ZWVjMTAzLWQ5OGYtNGQzZC04MzA5LWQxNWI1M2QzMjQ5Nw==
3

Continue Until Completion

Repeat the requests until an empty "notifications" array is returned, indicating all messages have been fetched.
4

Handling New Messages

Since sorting is in ascending order, new messages are added to the end of the results. To resume fetching from where you left off, reuse the last next_time_offset that returned an empty response.

Headers

​
Authorization
string
default:Key YOUR_APP_API_KEY
required

Your App API key with prefix Key. See Keys & IDs.

Query Parameters

​
app_id
string
default:YOUR_APP_ID
required

Your OneSignal App ID in UUID v4 format. See Keys & IDs.

​
limit
integer

Specifies the maximum number of messages to return in a single query. The maximum and default is 50 messages per request.

​
offset
integer

Controls the starting point for the notifications being returned. Default is 0. Results are returned and sorted in descending order by queued_at.

​
kind
integer

Specifies which push notifications to return based on how it was created. Use this to segment push by their creation method, allowing for targeted analysis or management of notification types. All push types are returned by default. 0 - Notifications created through the dashboard. 1 - Notifications sent via API calls. 3 - Notifications triggered through automated systems.

​
template_id
string

The template ID in UUID v4 format set for the message if applicable. See Templates.

​
time_offset
string

An ISO 8601 formatted timestamp or Base64 integer token (provided in the API response). See time_offset Accepted Values.

Response

200 - application/json

200

Returns all message properties for up to 50 messages per request. See the Push notifications, Email, and/or SMS Message Create APIs for all properties. Most commonly used properties for this endpoint are listed.