Authentication
All requests to Loggr's Web API require you to authenticate using HTTP basic auth to convey your identity. The username is your email address used when signing up for a Loggr account. The password is your account password.
Most HTTP clients (including web-browsers) present a dialog or prompt for you to provide a username and password for HTTP basic auth. Most clients will also allow you to provide credentials in the URL itself. For example:
http://joe%40sample.com:password@api.loggr.net/1/logs/testlog/events
Notice that, since your username is an email address, you're required to encode the @ symbol. Use %40 instead.