Error 404 when creating a POST request to id.twitch.tv/oauth2/token

API
3

Apologies, https://id.twitch.tv/oauth2/tokenclient_id=blablbalb&client_secret=fofofofofofffo&code=sasdasdasdasdad&grant_type=authorization_code&redirect_uri=http://localhost

I will be using a mixture of the Webhooks and the normal (not sure what is really called) Twitch API. Will I need two access token systems or can I use the same access token for both?