If you are going to use the openbadges.me Activity Events API to issue badges or create events that will trigger badges using the issuing rules engine, then you will need a developer API Key for the service.
To get your API keys, go to the 'API' area located under the 'Systems settings' menu.
First generate the API key, and then select the action against the API key to create the authentication token. This token must be used in conjunction with the API key. Make a note of the token and keep it safe. However, if you do lose your token then you can just create a new one.