# Backlink Checker via CommonCrawl and Google

> Backlink Checker via CommonCrawl and Google is a paid API for AI agents from api.strale.io, paid per call via x402, $0.162/call, status unknown (last checked 2026-09-14).

Check backlinks for a given domain using CommonCrawl and Google search, returning linking domains, anchor text, and dofollow/nofollow counts.

## Facts

- Endpoint: GET https://api.strale.io/x402/backlink-check
- Price: $0.162/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 1
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-strale-io-3785023a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6tOYuk2Np5EGER9MsQmB8

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 api-strale-io-3785023a
```

Example prompt: Can you check all the backlinks pointing to mybrand.com — I want to see which domains are linking to it, what anchor text they're using, and how many are dofollow vs nofollow?

## When to prefer this

Use this endpoint when you need a quick backlink profile for a domain including anchor text and link type breakdown, sourced from CommonCrawl and Google. Prefer this over manual SEO tools when automating link audits or competitive research in an agent workflow.

## Known failure modes

- Domain not found or no backlinks indexed — returns empty or zero counts
- Invalid domain format — schema validation error on the domain query parameter
- CommonCrawl or Google data temporarily unavailable — upstream timeout or error
- Rate limiting or payment failure — 402 payment required or quota exceeded

## How this service works

Check backlinks for a domain via CommonCrawl and Google search. Returns linking domains, anchor text, dofollow/nofollow counts.

## Output

Returns a list of linking domains, the anchor text used in those links, and counts of dofollow versus nofollow backlinks sourced from CommonCrawl and Google search data.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "domain": "example.com"
  }
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "domain"
 ],
 "properties": {
  "domain": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "backlinks": {
  "type": "array"
 },
 "top_anchors": {
  "type": "array"
 },
 "total_backlinks": {
  "type": "number"
 },
 "referring_domains_count": {
  "type": "number"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-strale-io-3785023a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)