I think your 5000 requests per month for the businesss tier are a bit on the low side.
Especially, since there is nothing above that.
Maybe add a "Need more? Contact us" tier.
Also, I'd love to use this with technologies other than PHP.
I use Rocket (Rust) in one of my projects and tried to check out the standalone cli as my only option.
The link to it didn't work on firefox mobile.
Thankfully clicking on any of the PHP things worked and brought me to the same docs where I could then navigate to the CLI.
Maybe highlight it more that you don't even need special integration with the Webserver, since it's possible to preprocess pages with your cli utility.
That part was not immediately obvious and might have turned me away, had I not been determined to see what the CLI tool did.