How am I just learning about Runscope? This service is fantastic. I just signed up for free, they have a really smooth onboarding process, I now have a free API monitor pinging my API from multiple geographic locations and verifying correctness of the return value, they are generating some neat reports, and it looks like they even have a control I can publish/iframe with a nice graphical history.
I mean, this is almost better than StatusPage.io type solution just because it's so simple. The pricing is serious, and I think reasonable but it will be un-affordable for some. For now I'll play with the free option and will upgrade as soon as there's funding.
I really wish you luck with this product, it provides real value and is easy to use, that should be enough.
Edit: So I read that you raised $6m. I'm sure that helped create this software. What's great is the company can now take its time earn back that money, and if you can focus on the features that matter you can grow the feature-set in a controlled simple manor. The only problem I forsee is the investors may never see a return on the $6m, or rather, selling shares will never surpass the liquidation preference, so the challenge is paying yourself enough. If you have Board control you will be able to issue dividends, but otherwise getting cash out of the company will be hard.