Unable to Retrieve OAuth Client Credentials Token (Invalid ClientID)

[BarryCarlyon]

@AcChosen

Simply making the request in the command line like this:

curl -d client_id=$CLIENT_ID
-d client_secret=$CLIENT_SECRET
-d grant_type=client_credentials
https://id.twitch.tv/oauth2/token

with CLIENT_ID and CLIENT_SECRET being the keys I generated when I registered my app at Twitch Developers stored as environment variables

You omitted a -X POST so you made a GET request instead of a POST request.

So

curl -X POST https://id.twitch.tv/oauth2/token?client_id=MYCID&client_secret=MYSECRET&grant_type=client_credentials

So no need to pass as -d variables here really

So that’ll fix you for getting a Client Credentials token but as dist notes, this doesn’t work for subscriptions data, unless your ClientID is an Extension and the streamer has that extension installed with Subscription Permissions enabled

The endpoint docs:

Reference

Notes the authentication requirements