403 Error during multiple API calls

Development
4

The API credentials need to be in the request header. You also need to use a dash instead of an underscore for the header field names:

  • api_key needs to be changed to api-key (or Api-Key)
  • api_username needs to be changed to api-username (or Api-Username)

The rule is that the header field names are not case sensitive, but you need to use dashes, not underscores. (I learned this the hard way.) Have a look at the example at the top of Discourse REST API Documentation to see a properly formatted API request.