Get local Instagram api credentials with Ngrok

It can be long to find the way through the documentation for these simple steps, so here is a shortcut.
Go to https://www.instagram.com/developer/clients/manage/ and get a Client ID and Client Secret.

1. Start a local server

   php -S localhost:8000

    

2. Start Ngrok and get the forwarding url
   (e.g. http://my.ngrok.io)

   ./ngrok http 8000

    

3. Copy this url into the security tab from the Instagram ui
   
4. Get the code
   Access this url from the browser: 
   https://www.instagram.com/oauth/authorize/?client_id=CLIENT-ID&redirect_uri=http://my.ngrok.io&response_type=code
   it will redirect then to http://my.ngrok.io/?code=CODE
    
5. Get the access token

   curl -F 'client_id=CLIENT-ID' \
    -F 'client_secret=CLIENT-SECRET' \
    -F 'grant_type=authorization_code' \
    -F 'redirect_uri=http://my.ngrok.io' \
    -F 'code=CODE' \
    https://api.instagram.com/oauth/access_token   

Documentation

• Instagram: https://www.instagram.com/developer/authentication/
• Ngrok: https://dashboard.ngrok.com/get-started