SEO1st.io alternative — the apibacklinks backlink API
A developer-first, 10× cheaper SEO1st.io alternative: backlinks, referring domains, anchors and Domain Rating as one JSON API. $100 free, DR & counts keyless.
Ask ten SEOs about SEO1st.io and you'll hear the same thing — great data, until you try to automate it. SEO1st.io | Reliable Backlinks & Link Building Services
Between seat limits, row caps and “contact sales” API tiers, pulling raw link data at scale turns into a procurement project.
apibacklinks was built for exactly this: referring domains, backlinks, anchors and a 0–100 Domain Rating, delivered as JSON over a web-scale link graph. Domain Rating and link counts are free and keyless; the heavy backlink and referring-domain lists cost about a tenth of what SEO1st.io and the incumbents charge.
The numbers for seo1st.io above come straight from that index — proof it works on the brand you’re comparing. Grab a key, pass ?key=, and you're migrated — with $100 of credit and no monthly minimum waiting on you.
apibacklinks vs SEO1st.io
| apibacklinks | SEO1st.io | |
|---|---|---|
| Access | JSON API | Dashboard-first |
| Price | from $0.10 per 1,000 calls | Subscription / higher |
| Free sign-up credit | $100 | Limited / trial |
| DR & link counts | Free, keyless | Paid / limited |
From SEO1st.io to apibacklinks in one call
curl "https://apibacklinks.com/api.php?action=refdomains&q=seo1st.io&key=YOUR_KEY"
SEO1st.io alternative — FAQ
Is there a free SEO1st.io alternative?
How is apibacklinks cheaper than SEO1st.io?
Where does the data come from?
Backlink data for the price of a rounding error
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