# MailProof x402 — Domain Email Security Audit

> MailProof x402 — Domain Email Security Audit is a paid API for AI agents from mailproof-rescue.savannah-5966.chatgpt.site, paid per call via x402, $29/call, status unknown (last checked 2026-09-15).

Audits a domain's email security posture by checking SPF, DMARC, DNSSEC, MTA-STS, TLS reporting, and mail routing configuration in real time.

## Facts

- Endpoint: GET https://mailproof-rescue.savannah-5966.chatgpt.site/api/v1/domain-audit
- Price: $29/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mailproof-x402-domain-email-security-audit-31a8d38d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bo461yOjfUWZ6CKsQtJcP

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 mailproof-x402-domain-email-security-audit-31a8d38d
```

Example prompt: Can you run a full email security audit on stripe.com and tell me if their SPF, DMARC, and DNSSEC are properly configured and what grade they get?

## When to prefer this

Choose this endpoint when you need a fast, pay-per-use, no-subscription email security audit that checks SPF, DMARC, DNSSEC, MTA-STS, and TLS reporting without requiring API keys or storing any domain data. Prefer it over general DNS lookup tools when you need a scored, graded, remediation-oriented security report specifically focused on email authentication infrastructure. Not appropriate if you need SMTP handshake testing, mailbox existence checks, inbox placement analysis, or sending reputation scores.

## Known failure modes

- Invalid domain format — domain must match pattern ^[A-Za-z0-9.-]+$ and be ≤253 characters
- Domain does not exist or has no DNS records — may return absent/invalid statuses for all checks
- DNS lookup timeouts causing incomplete SPF resolution results
- MTA-STS policy fetch failures if the domain's HTTPS policy endpoint is unreachable
- Payment failure via x402 protocol before the request is processed

## How this service works

Pay-per-request email and domain verification. No API keys, subscriptions, SMTP probes, or stored addresses.

## Output

Returns a JSON object containing: SPF validity and DNS lookup count, DMARC policy and validity, DNSSEC validation status, MTA-STS mode and policy validity, TLS reporting status, detected mail routing provider, an overall security grade (e.g. 'strong') and numeric score (0-100), a list of passing/failing security controls, remediation recommendations, and a timestamp of when the audit was performed. Also includes a limitations notice clarifying no SMTP handshake or inbox-placement testing is performed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "pattern": "^[A-Za-z0-9.-]+$",
       "maxLength": 253,
       "description": "Domain to audit as a URL query parameter. Public DNS and HTTPS evidence is checked in real time and not retained."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "spf": {
   "valid": true,
   "present": true,
   "lookupCount": 3,
   "lookupLimit": 10
  },
  "dmarc": {
   "valid": true,
   "policy": "reject",
   "present": true
  },
  "grade": "strong",
  "score": 85,
  "dnssec": {
   "validated": true
  },
  "domain": "example.com",
  "mtaSts": {
   "mode": "enforce",
   "policyValid": true
  },
  "auditedAt": "2026-08-19T09:00:00.000Z",
  "limitations": [
   "No mailbox, SMTP handshake, sending reputation or inbox-placement test is performed."
  ],
  "mailRouting": {
   "present": true,
   "provider": "Google Workspace"
  },
  "remediation": [],
  "tlsReporting": {
   "valid": true,
   "present": true
  },
  "controlCoverage": [
   {
    "status": "pass",
    "control": "DMARC enforcement"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mailproof-x402-domain-email-security-audit-31a8d38d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mailproof-rescue.savannah-5966.chatgpt.site](https://www.zero.xyz/host/mailproof-rescue.savannah-5966.chatgpt.site/llms.txt)