# Vextorium Email Security Analyzer

> Vextorium Email Security Analyzer is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-11).

Analyzes a domain's email security posture by checking MX, SPF, DMARC, MTA-STS, TLS-RPT, and BIMI records, returning a score, warnings, and spoofability detection.

## Facts

- Endpoint: POST https://api.vextorium.com/v1/email-security?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-email-security-analyzer-a3593277
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MB5yVioRCwWQkAXOPhqcp

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 vextorium-email-security-analyzer-a3593277 -d '<json body>'
```

Example prompt: Can you check the email security setup for example.com — I want to know if it can be spoofed, what the SPF and DMARC policies look like, whether MTA-STS is enabled, and what score it gets overall?

## When to prefer this

Choose this endpoint when you need a comprehensive, multi-protocol email security audit covering SPF, DMARC, MX, MTA-STS, TLS-RPT, and BIMI in a single call, especially when spoofability detection and a composite score are needed. It is better than manual DNS lookups when you want interpreted policy analysis (e.g. detecting 'no all' in SPF or DMARC at p=none) with actionable warnings rather than raw DNS data.

## Known failure modes

- Invalid or non-existent domain returns error or empty/null fields
- Domain with no DNS records may return null for all email security fields
- SPF lookup limit exceeded reported as a warning rather than hard error
- Typo in domain name leads to incorrect analysis with no indication of error
- Transient DNS resolution failures may produce incomplete results

## How this service works

Email security of a domain: MX, SPF (final policy, multiple-record and lookup-limit problems), DMARC (policy, subdomains, reporting), MTA-STS, TLS-RPT and BIMI, with a score and recommendations. Detects spoofable domains.

## Output

Returns a JSON object containing the domain's MX record list, SPF record string and final policy, approximate SPF DNS lookup count, DMARC record with policy/subdomain policy/reporting address/percentage, MTA-STS boolean, TLS-RPT boolean, BIMI boolean, a numeric security score (0–100), and an array of human-readable warnings about spoofability or misconfiguration issues.

## 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": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string"
      }
     }
    },
    "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",
      "null"
     ],
     "properties": {
      "mx": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": [
         "null",
         "string"
        ]
       }
      },
      "spf": {
       "type": [
        "object",
        "null"
       ],
       "properties": {
        "record": {
         "type": [
          "string",
          "null"
         ]
        },
        "final_policy": {
         "type": [
          "string",
          "null"
         ]
        },
        "dns_queries_approx": {
         "type": [
          "number",
          "null"
         ]
        }
       }
      },
      "bimi": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "dmarc": {
       "type": [
        "object",
        "null"
       ],
       "properties": {
        "policy": {
         "type": [
          "string",
          "null"
         ]
        },
        "record": {
         "type": [
          "string",
          "null"
         ]
        },
        "percentage": {
         "type": [
          "string",
          "null"
         ]
        },
        "reports_to": {
         "type": [
          "string",
          "null"
         ]
        },
        "subdomains": {
         "type": [
          "string",
          "null"
         ]
        }
       }
      },
      "score": {
       "type": [
        "number",
        "null"
       ]
      },
      "domain": {
       "type": [
        "string",
        "null"
       ]
      },
      "mta_sts": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "tls_rpt"
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "mx": [
   "5 gmail-smtp-in.l.google.com.",
   "10 alt1.gmail-smtp-in.l.google.com."
  ],
  "spf": {
   "record": "v=spf1 redirect=_spf.google.com",
   "final_policy": "no 'all'",
   "dns_queries_approx": 1
  },
  "bimi": false,
  "dmarc": {
   "policy": "none",
   "record": "v=DMARC1; p=none; sp=quarantine; rua=mailto:mailauth-reports@google.com",
   "percentage": "100",
   "reports_to": "mailto:mailauth-reports@google.com",
   "subdomains": "quarantine"
  },
  "score": 45,
  "domain": "gmail.com",
  "mta_sts": true,
  "tls_rpt": true,
  "warnings": [
   "DMARC at p=none: it only monitors, it does not protect against spoofing."
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-email-security-analyzer-a3593277/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)