Anyone can recommend a tool to check bulk indexing in Google?

As I started offering 100% indexing guarantee within a week of report delviery, I would need to check indexing of over 4000+ posts everyday, My team is using a free tool that lets to use only 10 posts per check.

Can you please suggest me a best and affordable premium tool for this?

Thanks in advance.

I use IndexedAPI - they have a sales thread here: https://www.blackhatworld.com/seo/bulk-google-index-checker-indexedapi-free-credits-inside.1352098/