# B2A Email Deliverability, MX, SPF & DMARC Verifier

> B2A Email Deliverability, MX, SPF & DMARC Verifier is a paid API for AI agents from github-audit.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 checks.

## Facts

- Endpoint: GET https://github-audit.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: github-audit.agentdiet.dev
- Website: https://github-audit.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/github-audit-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-1a750b67
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HkbdVfoLK8zBYYA-aQDdE

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 github-audit-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-1a750b67
```

Example prompt: Can you check whether john.doe@example.com is a real, deliverable email — specifically whether the domain has valid MX records, SPF and DMARC policies configured, and whether it looks like a disposable or role account?

## When to prefer this

Choose this endpoint when you need a comprehensive, multi-signal email validation that goes beyond simple syntax checking — specifically when you need live DNS MX record verification, SPF/DMARC policy checks, and disposable/burner provider detection in a single call. Ideal for B2B lead enrichment pipelines, signup fraud prevention, pre-send email list hygiene, and agent workflows that need to assess email trustworthiness before acting on an address.

## Known failure modes

- Missing or malformed email parameter returns an error
- Unreachable or non-existent domain may result in empty MX/SPF/DMARC fields
- DNS lookup timeouts for slow-responding nameservers
- Newly registered domains may not yet have SPF/DMARC records even if legitimate
- Disposable provider database may not cover all emerging throwaway services

## 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://github-audit.agentdiet.dev/v1/spf-dmarc-auditor)

## Output

Returns structured validation results including: email syntax validity, whether the domain is a known disposable/burner provider, whether the address is a role account (e.g. info@, admin@), live MX record lookup results, SPF record presence and policy, and DMARC record presence and policy — giving a comprehensive deliverability and trust assessment.

## 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/github-audit-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-1a750b67/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from github-audit.agentdiet.dev](https://www.zero.xyz/host/github-audit.agentdiet.dev/llms.txt)