You can actually see how many requests you’ve already used from headers of responses, and you can check these headers in your code:

X-RateLimit-directory-apis-Limit: 1000

X-RateLimit-directory-apis-Remaining: 1000

X-RateLimit-full-text-search-quota-Limit: 1000

X-RateLimit-full-text-search-quota-Remaining: 999

X-RateLimit-typeahead-quota-Limit: 10000

X-RateLimit-typeahead-quota-Remaining: 10000

I just want to use the apis to build a podcast website for fun, not for commercial use. Should I monitor the api usage by myself, any other way to do it conveniately? Thank you

From my understanding of the Mashape platform: no.

But you can ask Mashape customer service if it’s possible: https://market.mashape.com/contact

Just curious: what application are you building? I think you can monitor for a couple days and track the api usage, so you’ll have a better idea whether or not you’ll exceed the plan limit per month.