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Suggest an affordable SEO metrics API for 10M+ requests/month? .. for our live auction feed

HelmutsHelmuts is verified member.

Domain Summit | HostMaria
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We’re building a live auction feed and need to enrich a large volume of domains with SEO-style metrics (e.g. backlinks, referring domains, authority/trust-type scores, etc.) so buyers can quickly evaluate names.

Right now we’re already doing around 10 million API requests per month across various domains — and this will likely increase as we expand coverage and add more marketplaces.

Price is the biggest factor.

We currently use Majestic, but we’ve outgrown our existing agreement by 10x+, so we’re looking for more scalable and affordable options (or smarter approaches).

What API services do you use/recommend for pulling backlink + authority metrics at this kind of volume?

Bonus points if you can share:
  • what you’re paying (even rough ranges are helpful)
  • reliability/coverage at scale
  • bulk endpoints / batching options
  • rate limits you’ve hit in real life
  • cost-saving tactics (caching, refresh frequency, prefetching, etc.)

Any advice from people running high-volume domain tools would be hugely appreciated.

Tx!! Helmuts
 
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