# BlockInt Domain Phishing & Fraud Screener

> BlockInt Domain Phishing & Fraud Screener is a paid API for AI agents from blockint.ai, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Screens a domain name against the C3 community fraud database to return a risk score and matching phishing/scam report details.

## Facts

- Endpoint: GET https://blockint.ai/api/v1/domains/check/:domain
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockint-ai-2d124582
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gqwlUlj6GIEYdgzmbrLvq

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 blockint-ai-2d124582
```

Example prompt: Can you check if the domain 'cryptorewards-claim.io' is flagged as a phishing or scam site in the BlockInt C3 community database and tell me its risk score?

## When to prefer this

Use this endpoint when you need to quickly assess whether a specific domain is associated with phishing, fraud, or scams according to community-sourced C3 reports. Prefer this over the address screener when the suspicious entity is a URL/domain rather than a blockchain wallet address. Ideal for pre-click safety checks, anti-phishing workflows, or validating URLs encountered in crypto/Web3 contexts.

## Known failure modes

- Domain not found in database returns clean/no-match result
- Invalid domain format (e.g. includes protocol like https://) causes a 400 error
- Payment not included or rejected causes a 402 Payment Required response
- Rate limiting or service unavailability returns 5xx error
- Domain with no reports returns empty report list but valid risk score

## How this service works

Checks whether a domain is available, registered, or otherwise flagged.

## Output

Returns a risk score for the queried domain along with any matching fraud report details from the C3 community database, indicating whether the domain is associated with phishing, scams, or fraud.

## Example request

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

## 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"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "Domain to screen for phishing/fraud (no protocol, e.g. evil-site.io)"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "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/blockint-ai-2d124582/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blockint.ai](https://www.zero.xyz/host/blockint.ai/llms.txt)