# SEO Backlink Profile & Authority Checker

> SEO Backlink Profile & Authority Checker is a paid API for AI agents from seo.openverbs.com, paid per call via x402, $0.06/call, status healthy (last checked 2026-09-15, last successful call 2026-09-14).

Returns a domain's full backlink profile including DataForSEO domain rank, total backlinks, referring domains, broken backlinks, and spam score for link analysis and competitor research.

## Facts

- Endpoint: POST https://seo.openverbs.com/v1/backlinks
- Price: $0.06/call
- Payment: x402
- Status: healthy
- Last checked: 2026-09-15
- Last successful call: 2026-09-14
- Success rate: 100% of calls made through Zero
- Rating: 4.3 / 5 from 1 review
- Activations on Zero: 3
- Tags: x402
- Canonical page: https://www.zero.xyz/c/seo-backlink-profile-authority-checker-6a90c2c6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oxjWZd_DZbJGiT6p-lIq8

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability seo-backlink-profile-authority-checker-6a90c2c6 -d '<json body>'
```

Example prompt: Can you pull up the full backlink profile for ahrefs.com — I want to see the domain rank, total backlinks, referring domains, and spam score?

## When to prefer this

Choose this endpoint when you need a comprehensive snapshot of a single domain's link authority — covering domain rank, backlink volume, referring domain diversity, broken links, and spam risk — in a single call. Prefer it over the referring-domains list endpoint when you want aggregated authority metrics rather than a per-domain breakdown. It is ideal for quick competitive benchmarking, domain purchase due diligence, or establishing an SEO baseline before a link building campaign.

## Known failure modes

- Unknown or brand-new domain returns found=false with no metrics
- Malformed domain input (includes scheme, www, or path) may fail schema validation or return incorrect results
- Domain with no indexed backlinks returns zeroed metrics
- Payment failure or insufficient USDC balance returns 402 error
- Transient DataForSEO upstream errors may return 5xx responses

## How this service works

Get a domain's backlink profile and authority: DataForSEO domain rank, total backlinks, referring domains and main domains, referring pages, broken backlinks and spam score. For link analysis and competitor research. Unknown domain returns found=false.

## Output

Returns a JSON object indicating whether the domain was found (found=true/false), along with DataForSEO domain rank (0-100), total backlink count, number of referring domains, number of referring main domains, referring pages count, broken backlink count, and a spam score — providing a comprehensive snapshot of the domain's link authority.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "target"
     ],
     "properties": {
      "target": {
       "type": "string",
       "maxLength": 253,
       "minLength": 3,
       "description": "Bare domain to profile, e.g. stripe.com (scheme, www and path are stripped)."
      }
     },
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/seo-backlink-profile-authority-checker-6a90c2c6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from seo.openverbs.com](https://www.zero.xyz/host/seo.openverbs.com/llms.txt)