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Strale Backlink Check API
x402
Strale Backlink Check API is a paid API for AI agents from api.strale.io, paid per call via x402, $0.162/call, status unknown (last checked 2026-10-29).
Checks whether a given domain has backlinks, returning link authority and referral data with a cryptographic audit record.
Price / call$0.162
Success—
StatusUnknown
How this service works
Check backlinks for a domain via CommonCrawl and Google search. Returns linking domains, anchor text, dofollow/nofollow counts.
Output
Returns backlink data for the specified domain including referring domain count, link sources, and authority signals, along with a cryptographic audit record containing a chain hash for verifiability.
Example use cases
SEO audit for a client site
“Can you run a backlink check on myclientsite.com? I need to see which domains are linking to it before I put together their SEO report.”
Competitor backlink research
“Check the backlinks for competitor.com — I want to know how many sites are linking to them so I can benchmark against my own domain.”
Verify link-building campaign results
“We ran a link-building campaign last month targeting brandnewdomain.io — can you check if any backlinks have shown up yet?”
Technical details
Endpoint
GEThttps://api.strale.io/x402/v2/backlink-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, auditable per-domain backlink check with cryptographic proof of the result — especially in automated agent workflows where auditability and pay-per-call micropayment pricing are preferred over subscription-based SEO tools. Ideal for one-off domain checks rather than bulk crawls.
Side effects
- Domain not found or has no indexed backlinks — returns empty result set
- Invalid domain format — returns validation error
- Rate limit exceeded — returns 429 status
- Service unavailable — returns 5xx error
- Insufficient USDC balance for x402 micropayment — payment fails before request is processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domainrequired | string |
Output
Schema · Response
{
"backlinks": {
"type": "array"
},
"top_anchors": {
"type": "array"
},
"total_backlinks": {
"type": "number"
},
"referring_domains_count": {
"type": "number"
}
}Tags
x402
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