CODEWITHSUNDEEP
google-apigoogle-calendar-api
ThomasD
ThomasD

Reputation: 2494

Google Calendar APIKey not working anymore

I have been retrieving Danish holidays using the Google Calendar Api but suddenly it stopped working.

I would normally just call the URL below using an apikey in the key-parameter for authentication: https://www.googleapis.com/calendar/v3/calendars/da.danish%23holiday%40group.v.calendar.google.com/events?key=AIzaSyAi3_vE6AC1E--9sX3LGjk6lOXh0sSNkr8&timeMin=2020-06-29T00:00:00Z&timeMax=2020-07-06T00:00:00Z&singleEvents=true&maxResults=9999

But now I am getting the follow error:

{
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "authError",
    "message": "Invalid Credentials",
    "locationType": "header",
    "location": "Authorization"
   }
  ],
  "code": 401,
  "message": "Invalid Credentials"
 }
}

I tried generating another APIKey but with the same result.

Any ideas why?

Upvotes: 1

Views: 2293

Answers (2)

Iamblichus
Iamblichus

Reputation: 19349

You don't need OAuth in order to access public Calendars, the behaviour you were experiencing was caused by a bug.

You don't need to authorize your request in order to access a public Calendar (anyone can access it, after all), so an API key can be used for that.

While this might change in the future, and while OAuth is the recommended way to access the API, this is the current product behaviour.

The reason you were getting a 401 was because of this bug, which got fixed a few hours later:

Upvotes: 2

Shaker Chabarekh
Shaker Chabarekh

Reputation: 14

It appears that Google now requires OAuth2 clients to be set up even for public calendars like the holidays calendar:

Your application must use OAuth 2.0 to authorize requests. No other authorization protocols are supported. If your application uses Google Sign-In, some aspects of authorization are handled for you.

I used Google's OAuth2 playground to set up access and refresh tokens while in development.

The scope is:

https://www.googleapis.com/auth/calendar.readonly

After that, it would be necessary to set up an OAuth client when a project goes to production.

UPDATE

It was Google's issue. API Keys are working again.

Upvotes: -1

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