Help me validate an idea! Uptime monitoring for API workflows.

Hey y'all,

I'm building multistepuptime.

It's a config driven uptime monitoring service powered by Step CI, an open source API testing framework. Write expressive uptime monitors for a chain of API requests!

Features:

1. Integrations. Get notifications wherever you need them: Pagerduty, SMS, Slack, Webhooks, Zapier, Email.
2. SSL Testing. Receive instant alerts for expiring or invalid certificates.
3. Simple and inexpensive pricing. Credit based pricing model. Pay only for what you use.
4. Multi-location tests. Tests run in multiple geo locations, with downtimes confirmed from at least 2 diffferent locations.
5. Monitor uptime for API Workflows. Leverage an open source QA testing framework to chain requests together, with features such as variable capture, response / header matchers and more.
6. Measure Performance. See your response times for every request to reveal performance bottlenecks.

Pricing:

Zero commitment credit based pricing plan: Pay for what you use. 1 credit = 1 step of an API test. All features are unlocked out of the box.

Would love some feedback!

Some questions i'm looking to get answered:

1. Is the simple pay as you go model appealing? Or do you think monthly subscription with tiers is the way to go?
2. Is the value prop clear?
3. What features would you like to see in addition to what's listed?