Update Alarm
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Update Alarm

Updates an alarm on the given device. This endpoint is supported for trackers that support alarms.

Scope: settings


POST /1/user/[user-id]/devices/tracker/[tracker-id]/alarms/[alarm-id].json

URI Arguments
user-id required The encoded ID of the user. Use "-" (dash) for current logged-in user.
tracker-id required The ID of the tracker for which the alarm is created. The tracker-id can be found by using the Get Devices endpoint.
alarm-id required The ID of the alarm to be updated. The alarm-id can be found by using the Get Alarms endpoint.

Query Parameters
time required The time of day and UTC offset that the alarm vibrates in the format HH:mm-offset, e.g. 07:00-08:00. string ($time)
enabled required Enables the alarm to vibrate.
Supported: true | false
recurring required Defines the alarm as a recurring (true) or a single event (false).
Supported: true | false
weekDays required A comma separated list of days of the week which the alarm vibrates.
snoozeLength required Number of minutes between alarms. integer
snoozeCount required Maximum number of times allowed to snooze alarm. integer
label optional Label or name for the alarm. string
vibe optional The vibration pattern.
Supported: DEFAULT

Request Headers
authorization required Specify the token type and Fitbit user’s access token.
Token type: Bearer
accept optional Defines the media type of the response content the client is expecting.
Supported: application/json
accept-language optional The measurement unit system to use for response values. See Localization.
accept-locale optional The locale to use for response values. See Localization.
content-length required According to RFC 7230, section 3.3.2, this HTTP request requires the Content-Length header field containing the anticipated size of the payload body.

POST https://api.fitbit.com/1/user/-/devices/tracker/755971717/alarms/1240569123.json?time=12:00-08:00&enabled=true&recurring=false&weekDays=WEDNESDAY&snoozeLength=5&snoozeCount=5
POST https://api.fitbit.com/1/user/GGNJL9/devices/tracker/755971717/alarms/1240569123.json?time=12:00-08:00&enabled=true&recurring=false&weekDays=WEDNESDAY&snoozeLength=5&snoozeCount=5
curl -X POST "https://api.fitbit.com/1/user/-/devices/tracker/755971717/alarms/1240569123.json?time=12:00-08:00&enabled=true&recurring=false&weekDays=WEDNESDAY&snoozeLength=5&snoozeCount=5" \
-H "accept: application/json" \
-H "authorization: Bearer <access_token>" \
-H "content-length: <message_body_size>"


Element Name Description
trackerAlarm : alarmId Numerical value representing the alarm ID.
trackerAlarm : deleted Indicates if an alarm has been deleted.
Supported: true | false
trackerAlarm : enabled Indicates if an alarm is enabled.
Supported: true | false
trackerAlarm : recurring Indicates if an alarm is recurring.
Supported: true | false
trackerAlarm : snoozeCount Indicates the number of times the alarm will snooze.
trackerAlarm : snoozeLength Indicates the time in minutes between snooze periods.
trackerAlarm : syncedToDevice Supported: true | false
trackerAlarm : time The time range for the specified alarm.
trackerAlarm : vibe Returns the type of vibration configured.
Supported: DEFAULT
trackerAlarm : weekDays Returns the recurring days of the week which the alarm is set.
  "trackerAlarm": {
    "alarmId": 1240569123,
    "deleted": false,
    "enabled": true,
    "recurring": false,
    "snoozeCount": 5,
    "snoozeLength": 5,
    "syncedToDevice": false,
    "time": "12:00-08:00",
    "vibe": "DEFAULT",
    "weekDays": []

Response Headers
content-type The media type of the response content being sent to the client.
Supported: application/json
fitbit-rate-limit-limit The quota number of calls.
fitbit-rate-limit-remaining The number of calls remaining before hitting the rate limit.
fitbit-rate-limit-reset The number of seconds until the rate limit resets.

Note: The rate limit headers are approximate and asynchronously updated. This means that there may be a minor delay in the decrementing of remaining requests. This could result in your application receiving an unexpected 429 response if you don't track the total number of requests you make yourself.

Response Type

HTTP Status Code HTTP response code. List of codes are found in the Troubleshooting Guide.
Status Message Description of the status code.
Response Body Contains the JSON response to the API call. When errors are returned by the API call, the errorType, fieldName and message text will provide more information to the cause of the failure.

Response Codes
201 A successful request.
400 The request had bad syntax or was inherently impossible to be satisfied.
401 The request requires user authentication.

Note: For a complete list of response codes, please refer to the Troubleshooting Guide.

Additional Information

Device support

The Fitbit devices have the ability to set an alarm. Older devices whose alarms are configured in the mobile application support the create, delete, get and update alarm endpoints. Newer devices, listed in this help article https://help.fitbit.com/articles/en_US/Help_article/1868.htm, contain an on-device alarm application, and do not support the alarm endpoints. The alarms for these devices can only be set on the device itself.

Setting an alarm without a recurring schedule is intended for next day purposes only.