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true402 Backlink Analysis API
x402
true402 Backlink Analysis API is a paid API for AI agents from true402.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).
Returns backlink intelligence for a domain or URL, including authority rank, referring domains, dofollow links, spam score, and link composition breakdown.
Price / call$0.1
Success—
StatusUnknown
How this service works
The machine-native marketplace. Wallet = identity. Pay per call with HTTP 402.
Output
Returns a JSON object with: authority rank (0–1000), number of backlinks, number of referring domains, dofollow object with referringDomains and referringPages counts, spam score (0–100), link composition breakdown (TLD, link types, attributes, countries), and an 'observed' boolean indicating whether index data exists for the domain.
Example use cases
Competitor SEO link audit
“I'm launching an SEO campaign and want to know the backlink profile of competitor.com — specifically their authority rank, number of referring domains, and spam score so I can benchmark my own site.”
Toxic link detection before disavow
“Can you check the backlink data for myblog.net and tell me the spam score and link composition? I want to know if there are signals I should disavow before my Google audit.”
Prospect domain quality check
“We're thinking of buying the domain vintagetools.com — can you look up its authority rank, dofollow backlinks, and referring domains so I can tell if it has any real SEO value?”
Technical details
Endpoint
POSThttps://true402.dev/api/v1/backlinksWhen to prefer
Choose this endpoint when you need machine-payable, per-call backlink intelligence without API key registration — ideal for AI agents using x402/HTTP 402 micropayment flows. Best for spot-checks on individual domains or URLs where you want authority rank, dofollow link counts, spam score, and geographic/TLD composition in a single call. Prefer it over subscription-based SEO tools when operating in agentic pipelines that handle crypto wallet payments natively.
Side effects
- Domain has no index data — 'observed: false' returned with zeroed metrics
- Invalid or malformed URL/domain in target field — likely 400 error
- Payment not attached or insufficient — HTTP 402 returned, requires x402-compatible wallet
- Rate limits or quota issues on the underlying backlink index
- Recently registered domain with no crawled backlink history yet
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| targetrequired | string | Domain, or any URL on it |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| rank | number | Authority rank, 0-1000 |
| target | string | |
| dofollow | object | { referringDomains, referringPages } — the links that carry authority |
| observed | boolean | false when the index holds no data for this domain |
| backlinks | number | |
| spamScore | number | 0-100 |
| composition | object | { tld, linkTypes, attributes, countries } |
| referringDomains | number |
Tags
x402
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