In the case of the lnp2pbot, the source tag with the link to Telegram is published in the kind 38383 events.
In the case of nostr:nprofile1qqsdhc93hklp988r3km4844fjln298nf8t7s92sar7dsqha88ph9cfspz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsz8thwden5te0dehhxarj9e3xjarrda5kuetj9eek7cmfv9kz7qg4waehxw309aex2mrp0yhxummnw3ezucn89uv7r8lk, to take an order, it must be within a client that sends Gift Wrap events indicating to the Mostro instance that they want to take that order.
For now, there is no other way to take it other than within a client with those characteristics.