# AgentUtility Email Verify API

> AgentUtility Email Verify API is a paid API for AI agents from x402.agentutility.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Validates an email address using syntax, MX record, disposable-domain, role-account, SPF, DMARC, and DKIM checks to assess deliverability.

## Facts

- Endpoint: POST https://x402.agentutility.ai/email-verify-api
- 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/agentutility-email-verify-api-f8ef2285
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jghWYnPes56eBZcOa9Tej

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 agentutility-email-verify-api-f8ef2285 -d '<json body>'
```

Example prompt: Can you check whether john.doe@example.com is a real, deliverable email address — including whether the domain has valid MX records, isn't a disposable provider, and passes SPF and DMARC checks?

## When to prefer this

Choose this endpoint when you need a comprehensive multi-signal email validation that goes beyond simple syntax checks — covering DNS (MX, SPF, DMARC, DKIM), disposable provider detection, and role-account flagging in a single call. Useful for agents operating autonomously without a browser-based CAPTCHA flow, as it is x402/USDC-payable per call with no subscription required.

## Known failure modes

- Invalid or malformed email input returns a syntax error
- DNS lookup timeout if the domain's nameservers are slow or unreachable
- Disposable domain database may not cover newly created throwaway services
- DKIM check may be inconclusive if no selector is provided
- Payment failure (insufficient USDC balance) blocks the request under x402 protocol

## How this service works

Verifies an email address with syntax, MX, disposable-domain, role-account, SPF, DMARC, and DKIM checks. Same DNS-safe email deliverability backend as email-verify, indexed for agents searching exact email verification wording. Use it as an email verify API or to validate email address input.

## Output

Returns a structured validation result covering: syntax validity, MX record presence, whether the domain is flagged as a disposable/temporary email provider, whether the address is a role account (e.g. info@, admin@), and DNS-based authentication records (SPF, DMARC, DKIM) — together forming an overall deliverability assessment.

## 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 validate and score, e.g. 'buyer@example.com'."
      },
      "dkim_selectors": {
       "type": "array",
       "items": {
        "type": "string"
       },
       "description": "Optional DKIM selectors to check. Defaults to common selectors such as google, selector1, selector2, s1, and s2."
      }
     }
    },
    "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"
      },
      "can_receive_mail": {
       "type": "boolean"
      },
      "deliverability_score": {
       "type": "integer"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "risk": "low",
  "can_receive_mail": true,
  "deliverability_score": 92
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentutility-email-verify-api-f8ef2285/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.agentutility.ai](https://www.zero.xyz/host/x402.agentutility.ai/llms.txt)