# Email Domain Security Audit

> Email Domain Security Audit is a paid API for AI agents from bess-x402.onrender.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-30).

Performs a comprehensive email authentication audit of a domain, checking MX, SPF, DMARC, DKIM, MTA-STS, TLS-RPT, and BIMI records, then grades the domain A–F with remediation advice.

## Facts

- Endpoint: GET https://bess-x402.onrender.com/v1/web/email-security?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/email-domain-security-audit-53c57a06
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iQ7nZdWxliJgSeJtQ4b9s

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 email-domain-security-audit-53c57a06
```

Example prompt: Can you run a full email security audit on acmecorp.com and tell me what grade it gets, whether SPF and DMARC are properly enforced, and what I need to fix?

## When to prefer this

Choose this endpoint when you need a single-call, multi-protocol email authentication audit covering SPF, DMARC, DKIM, MTA-STS, TLS-RPT, and BIMI in one response with an A–F grade and actionable fixes. Prefer it over raw DNS lookup tools when you want a synthesized security posture rather than individual record lookups, or when assessing deliverability and anti-phishing posture for a domain you don't control.

## Known failure modes

- Domain does not exist or has no DNS records — returns empty or error response
- Domain has no MX records — partial results with degraded grade
- DNS timeout for certain record types — may return incomplete results for affected checks
- Invalid domain format provided — returns validation error
- Rate limiting or infrastructure issues on the provider side — HTTP 429 or 5xx response

## How this service works

Email authentication audit of a domain: MX, SPF (lookup count and policy), DMARC policy and reporting, DKIM on common selectors, MTA-STS, TLS-RPT and BIMI, graded A-F with fixes. Use for deliverability and phishing-risk checks.

## Output

Returns a structured report covering MX record details, SPF record text with lookup count and policy strictness, DMARC policy tag and reporting addresses, DKIM check results on common selectors, MTA-STS policy mode, TLS-RPT record presence, BIMI status, an overall letter grade from A to F, and a list of specific remediation steps to improve the configuration.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "Domain"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/email-domain-security-audit-53c57a06/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bess-x402.onrender.com](https://www.zero.xyz/host/bess-x402.onrender.com/llms.txt)