I would like to use userpoints as a LETS system for my town, and I found userpoints_donation module useful. I'm not a developer but I think that I could afford this with Userpoints API or a custom module, but I don't know how:

  • Create third party transactions. Pay or charge points to many users. (I discovered how to charge users or go negative commenting some lines in userpoints_donation module).
  • Accept or deny a transaction (this is important...)
  • Stablish negative and positive limits (with rules?), depending on role or user id.
  • Calculate how many "gives" and "receives" user have.

Well, there is another module called mutual credit, but I think that userpoints has more support and integration.

Could you help me? :)
Sorry for my english...

Thanks in advance!