[murmansk]

This is a Node.js library that allows you to instantly* send a fraction of Ether as a payment for a HTTP service.

* - ok, if you have a payment channel open. A payment channel is an instance of state channels described on http://www.jeffcoleman.ca/state-channels/

It allows you to pay for just one SMS sent instead of having a minimal credit on Twilio, as an example.

[spolu]

Is there a cost to setting up a channel?

[murmansk]

Yes, it is about 20 cents to open a channel, and 30 cents to close it.