# Disposable Email Detector & Fake Email Filter

> Disposable Email Detector & Fake Email Filter is a paid API for AI agents from x402-deployer.x402-deployer.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Checks whether an email address is disposable, fake, or a role account by cross-referencing 100k+ known disposable domains and verifying MX records via Cloudflare DNS-over-HTTPS.

## Facts

- Endpoint: POST https://x402-deployer.x402-deployer.workers.dev/disposable-email-check
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-deployer-x402-deployer-workers-dev-ef8cd564
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QODgOgJYtLrFLRz9dwt2J

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 x402-deployer-x402-deployer-workers-dev-ef8cd564 -d '<json body>'
```

Example prompt: Can you check if 'user1234@mailnull.com' is a disposable or fake email — I want to know if it's a throwaway address, a role account, and whether its domain has valid MX records before I let it register on my platform?

## When to prefer this

Use this endpoint when you need to block throwaway, burner, or role-based email addresses at signup or lead capture — especially when you want MX record verification combined with a large static blocklist in a single low-cost call. Prefer this over purely regex-based checks or simple MX-only validators when fraud prevention and disposable-domain coverage are both required.

## Known failure modes

- Invalid or malformed email address returns a validation error
- Network timeout on Cloudflare DoH MX lookup may cause partial result
- Unknown or very new disposable domains may not be in the 100k+ list and could be missed
- Payment of $0.01 USDC not received results in 402 Payment Required response

## How this service works

Disposable email detector / fake email filter / fraud signup defense. Cross-checks 100k+ disposable domains list. Flags role accounts (admin@, noreply@). Verifies MX record via Cloudflare DoH.

## Output

Returns whether the email is from a known disposable/temporary domain (from a 100k+ domain blocklist), whether it is a role-based account (e.g. admin@, noreply@), and whether the domain has a valid MX record as verified via Cloudflare DNS-over-HTTPS.

## 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": {
     "required": [
      "email"
     ],
     "properties": {
      "email": {
       "type": "string",
       "description": "Email address to evaluate (e.g. 'user@mailinator.com'). Only the domain and local-part shape are used; the address is not contacted."
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "risk": {
       "type": "string"
      },
      "email": {
       "type": "string"
      },
      "domain": {
       "type": "string"
      },
      "mx_records": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "has_mx_record": {
       "type": "boolean"
      },
      "is_disposable": {
       "type": "boolean"
      },
      "is_role_account": {
       "type": "boolean"
      },
      "matched_blocklist_domain": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-deployer-x402-deployer-workers-dev-ef8cd564/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-deployer.x402-deployer.workers.dev](https://www.zero.xyz/host/x402-deployer.x402-deployer.workers.dev/llms.txt)