# Fraud Fusion Score

> Fraud Fusion Score is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns a combined 0-100 anti-abuse risk score for an email address and/or IP address, with per-dimension reasons covering domain email hygiene and IP reputation.

## Facts

- Endpoint: GET https://payai.agentstools.dev/fraud/score
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fraud-fusion-score-4f0755ad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_T_ZAUNZ7PGszLOvGyMz-Y

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 fraud-fusion-score-4f0755ad
```

Example prompt: Can you run a fraud risk check on the email signup 'john.doe@tempmail.xyz' coming from IP 185.220.101.42 claiming to be from Germany? I need a combined abuse score and the reasons behind it.

## When to prefer this

Choose this endpoint when you need a single, pre-fused fraud risk signal combining both email hygiene and IP reputation without having to call separate services and aggregate yourself. It is especially useful for signup flows, account creation gates, or API access requests where you have at least one of an email address or IP and want a fast deterministic score with human-readable reasons. Prefer it over building your own fusion logic from raw WHOIS, MX, or IP data lookups.

## Known failure modes

- Missing both email and IP — endpoint requires at least one of the two query parameters
- Invalid IP format (non-public or malformed IPv4) may return an error or reduced score
- Unknown or very new email domains may have limited signal and lower confidence
- Payment failure or missing x402 payment header returns 402 Payment Required
- Rate limiting may return 429 if call volume exceeds plan limits

## How this service works

Fusion anti-abuse risk score for an email and/or IP in one call. Combines domain-level email intelligence (MX, SPF, DMARC, disposable, free, role) with IP reputation into a deterministic 0-100 score with per-dimension reasons. Works with either input alone.

## Output

A deterministic 0-100 fraud risk score combining email domain intelligence (MX record validity, SPF/DMARC presence, disposable provider detection, free provider flag, role-address flag) and IP reputation signals, along with per-dimension reasons explaining each contributor to the score. Either email or IP can be omitted and the score is computed from whichever is provided.

## 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",
     "properties": {
      "ip": {
       "type": "string",
       "description": "Public IPv4 address to assess"
      },
      "email": {
       "type": "string",
       "description": "Email address to assess (domain-level only, no mailbox probing)"
      },
      "country": {
       "type": "string",
       "description": "Optional 2-letter country the caller claims, for a geo-mismatch check on the IP"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fraud-fusion-score-4f0755ad/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from payai.agentstools.dev](https://www.zero.xyz/host/payai.agentstools.dev/llms.txt)