Consul has now hit version 1.0.0, and as part of this release they have made the accepted HTTP verbs for various endpoints much stricter. This breaks (parts) of this library. The particular example I have found is that the agent.check.ttl_pass and agent.check.ttl_fail functions don't work as they use GET requests and those endpoints now only support PUT requests. I'm sure there will be more examples of breakages caused by this change.