@pickt3 said:
Invalid API Key Error
Hello,
I am getting an error with my API key when I try to validate on the site
https://developer.themoviedb.org/reference/authentication-validate-key.
Error code: {"status_code":7,"status_message":"Invalid API key: You must be granted a valid key.","success":false}

I am able to validate successfully when I try visiting this site:
https://api.themoviedb.org/3/authentication?api_key=XXXXX

Likewise, I can access the json for Fight Club / generic movie search (as other posts have suggested trying), but running any other kind of search on the site is not successful.
https://api.themoviedb.org/3/movie/550?api_key=XXXXX

Can anyone assist?

I assume you are testing/using "Try it!" in the documentation.

The "Try it!" option in DOCs it only works with the "Access Token Auth" option.
It doesn't work if you select the "API Key Auth" option.
Your API Key validation test is done using your Token.
https://developer.themoviedb.org/reference/authentication-validate-key
If your Token works then your API Key must also work.

If you want to test your API Key directly, follow the instructions below.

Take a Test
Using a computer, desktop or notebook.
On some mobile devices this test may not work correctly.
In the URL below, change THE_KEY to your API Key.
https://api.themoviedb.org/3/movie/550?api_key=THE_KEY
Use this example to do a search using a new tab or window in your browser.
You will receive the basic data of the Movie Fight Club (1999)
https://www.themoviedb.org/movie/550-fight-club
If it works, your Key is OK.

When there is a problem, the TMDb Server sends a message.
Can you tell which message the server sent?
Here is a list of possible messages:
https://developer.themoviedb.org/docs/errors

If it does not work, let us know right here.