Here’s what Gthm posted:
It turns out that this was an invalid scope/permissions error. Some of the changes I made for the script to be working

1) When requisting Oauth2 the default permission scope does not include heart rate. It pretty much includes everything but heart rate and calories. So for better measure I explicitly granted scope.

In function getFitbitService() { // updated the below line
.setScope(‘activity heartrate location nutrition profile settings sleep social weight’)

2) Update the activities and intradays variables accordingly

var activities = ["activities/heart"];
var intradays = ["activities-heart-intraday"];

3) Request the proper URL for heart rate. The API docs are not clear enought, especially near the URL templates. I got the last template of the API docs working for heart rate.

It was easier for me to hardcode the URL so I just replaced the featch call with this

var result = UrlFetchApp.fetch(“https://api.fitbit.com/1/user/-/activities/heart/date/2015-07-07/1d/1sec/time/00:00/23:59.json”, options);

Once you get this request to work, you can generalize and construct the above request dynamically based on user inputs.

Thank you for sharing this info! I have been diagnosed with Tourette Syndrome in my forties, and I think the diagnose does help a lot. For instance, TS is characterized by the presence of both motor and phonic tics. You don’t seem to list any phonic tic in your list, and I myself didn’t realize that all the little noises that I made were actually tics, triggered by stress and tiredness, just like the motor tics. Do you repeatedly clear your nose, throat, grunt, whistle, and make some other noises or word utterances? Now that’s classic Tourette. For me the diagnose has been liberating, not only because I have been able to recognize that part of myself, but also because a deep screening showed me that, as a part of the Syndrome, and like 80% of people with Tourette, I also have co-morbid disorders. Typically Obsessive-Compulsive disorder (rituals, obsessions, anyone?), ADHD, and Anxiety Disorder (the stress thing). That’s the good thing of being diagnosed, it let’s you explore things that you wouldn’t discover by yourself, at least not initially, and it lets you learn about yourself through the experience of others like you, like us! Cheers! Daniel.

https://github.com/simonbromberg/googlefitbit

Posted a followup to the dev about heart rate data on this FitBit Dev thread.

https://community.fitbit.com/t5/Web-API/Google-apps-script-for-minute-by-minute-data-stopped-working/td-p/754197

Thanks again