# B2A Email Deliverability, MX, SPF & DMARC Verifier

> B2A Email Deliverability, MX, SPF & DMARC Verifier is a paid API for AI agents from sec-intel.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown (last checked 2026-10-21).

Validates an email address for syntax correctness, disposable/burner provider status, role account detection, and live DNS MX, SPF, and DMARC record health.

## Facts

- Endpoint: GET https://sec-intel.agentdiet.dev/v1/spf-dmarc-auditor?utm_source=zero.xyz
- Price: $0.005/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: sec-intel.agentdiet.dev
- Website: https://sec-intel.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/sec-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-b56492ee
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dRzX9AXhUuNfqUP59K3A9

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 sec-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-b56492ee
```

Example prompt: Can you check if john.doe@tempmail.com is a real, deliverable email address — specifically whether it's from a disposable provider and whether the domain has valid MX, SPF, and DMARC records set up?

## When to prefer this

Prefer this endpoint when you need a comprehensive, single-call check covering syntax, live DNS deliverability (MX), email authentication policy (SPF/DMARC), and disposable/role account risk — especially in fraud prevention, lead qualification, or security auditing contexts where a full-stack email health assessment is needed rather than just a ping or format check.

## Known failure modes

- Missing or invalid 'email' parameter returns a validation error
- DNS lookup timeouts for unresponsive nameservers may result in inconclusive MX/SPF/DMARC results
- Newly registered domains with propagating DNS may show false negatives for MX/SPF/DMARC
- Disposable provider database may not include newly created throwaway services
- Payment required (HTTP 402) if x402 micropayment header is missing or insufficient

## How this service works

Validates email syntax, disposable/burner provider status, role accounts, and live DNS MX/SPF/DMARC records. (Live x402 v2, IETF MPP & MCP endpoint at https://sec-intel.agentdiet.dev/v1/spf-dmarc-auditor)

## Output

Returns a structured object indicating whether the email passed syntax validation, whether the domain is associated with a known disposable/burner provider, whether the address is a role account (e.g. admin@, info@), and the live DNS status of MX, SPF, and DMARC records for the domain.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "email"
 ],
 "properties": {
  "email": {
   "type": "string",
   "minLength": 1,
   "description": "Email address to validate for syntax, MX deliverability, and disposable risk"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sec-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-b56492ee/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from sec-intel.agentdiet.dev](https://www.zero.xyz/host/sec-intel.agentdiet.dev/llms.txt)