Well, letsee…most responsible breeders will ask you why you want to breed your dog......first you should study the breed (hopefully for a few years). Understand the past, present and future of the Basenji. Make yourself knowledgable as to why Basenjis aren't the perfect breed for everyone. Educate yourself as to what Tobias' physical and mental strengths and weaknesses are...that is, why a breeder may want to breed her bitch to him...because simply to make and sell puppies is not a good enough answer.
To be a candidate to be bred, a Basenji should first off be healthy, physically and genetically. He would need to have his eyes checked by an opthamologist to see if he has any signs of inherited eye disease (namely PPM and PRA) if he does not, he will be awarded a CERF number. He needs to have his urine strip tested once a month, beginning at the age of three to determine whether there is sugar in his urine (an indicator of Fanconi syndrome). As a breeder, you need to know whether the dogs in his pedigree had Fanconi, or ever had any close relatives with it...any responsible breeder will expect you to be able to answer that question. He will need to have is own hips OFAd..just because his relatives are good and excellent does not mean he will be. A DNA profile would tell prospective breeders that he is the dog his pedigree says he is; and it would allow a breeder to be sure that his offspring were his (this can be a big problem with puppymills and irresponsible breeders)
Then, how is his temperament? Does he have any basic obedience skills? Does he ever growl at people? How is he around other dogs?
There are lots of other threads here about what makes a responsible breeder. It is pretty unlikely that any responsible breeder will take someone seriously that is looking to stud their dog without understanding all that goes into planning a breeding. If you are serious about wanting to learn, and passionate about preserving a unique, 5,000 year old breed, then there are lots of ways for you to get more involved; but looking for someone to make puppies with isn't one of them.