# Karma.Domains Domain Spam Score Checker

> Karma.Domains Domain Spam Score Checker is a paid API for AI agents from api.karma.domains, paid per call via x402, $1.5/call, status unknown (last checked 2026-10-16).

Returns the spam score and related SEO metrics (backlink count, domain authority, referring domains) for a given domain name

## Facts

- Endpoint: GET https://api.karma.domains/v1/domains/checker/spam_score?utm_source=zero.xyz
- Price: $1.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/karma-domains-domain-spam-score-checker-3b59cf24
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8m2StTfem6VTEJZ2_oGtw

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 karma-domains-domain-spam-score-checker-3b59cf24
```

Example prompt: Can you check the spam score and domain authority for oldnewspaper.com using Karma.Domains so I know if it's safe to buy?

## When to prefer this

Use this endpoint when you need a quick, per-domain spam score and core SEO health metrics (DA, backlinks, referring domains) before purchasing or using an expired domain. It is best suited for single-domain lookups where spam risk assessment is the primary goal, rather than broad discovery or full traffic analytics.

## Known failure modes

- Missing or invalid domain parameter returns an error
- Non-existent or unrecognized domain may return all zeros for metrics
- Rate limiting or payment failure (x402) blocks the request
- Malformed domain string (e.g. missing TLD) may cause parsing errors

## How this service works

Find expired domain names with high traffic and strong SEO backlinks daily. Boost your revenue by searching our database of 13,000,000+ expired domains from auctions, backorders, and dropped lists—complete with rich metrics and domain age.

## Output

Returns a JSON object with the domain name, spam score (ss), domain authority (da), backlink count (bl), and referring domains (rd) as numeric values for the queried domain.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "example": "example.com"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "bl": 0,
  "da": 0,
  "rd": 0,
  "ss": 0,
  "domain": "example.com"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/karma-domains-domain-spam-score-checker-3b59cf24/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.karma.domains](https://www.zero.xyz/host/api.karma.domains/llms.txt)