The commands are actually interpreted by Apple’s servers, and then intercepted by a proxy I have running locally. I am then simply using Twitter gem to make the post. Confirm and cancel work both by voice and by clicking the onscreen buttons. You may notice it appears the resutls are coming from WolframAlpha. I just used this response format as it allows you to return arbitrary text and images, as well as a confirmation. There is no interaction with wolfram’s servers.
Netpro2k’s code has been pulled into the main repository and can be downloaded here.