The way we are able to easily test our APIs by just simply making requests in different ways, with various parameters etc.. I think it's great! It would be nice if you could set multiple callbacks so that when one fails another will try instead of having them all fail at once (which happens sometimes). We're using this mainly as part development but also have used some other tools where there isn't much choice or flexibility which makes developing easier - i'm not sure how others feel about their experience here though? Have been very happy overall since started use last year however haven;t had any major issues yet either. Using primarily during product/feature developments although do still find time now too often to update existing features / fixes rather than new feature releases due dates being pushed back further each release cycle causing us missing out again :/.