# DomainDNA Email Security & Tech Stack Lookup

> DomainDNA Email Security & Tech Stack Lookup is a paid API for AI agents from domaindna-api.cybermax-tools.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-11).

Returns email security posture (SPF, DKIM, DMARC), technology stack, and domain age for any given domain in a single API call.

## Facts

- Endpoint: GET https://domaindna-api.cybermax-tools.workers.dev/x402/api/email-security?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/domaindna-email-security-tech-stack-lookup-5a705e3c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ff2uIEEGxIugxtPyMTdtl

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 domaindna-email-security-tech-stack-lookup-5a705e3c
```

Example prompt: Can you check the email security setup and tech stack for stripe.com — I want to know if they have DMARC, SPF, and DKIM configured, plus how old the domain is?

## When to prefer this

Choose this endpoint when you need email security posture AND tech stack data for a domain in a single round-trip. It is ideal for security audits, vendor due diligence, phishing investigations, and competitive research where combining DNS/DMARC intelligence with technology fingerprinting saves multiple separate lookups. Supports up to 5 domains per call, making it efficient for small batch checks.

## Known failure modes

- Domain does not exist or is unresolvable — returns empty or error record
- Domain has no email security records (missing SPF/DMARC) — fields returned as null or absent
- Rate limiting or quota exceeded for bulk domain inputs (max 5 per call)
- Subdomain provided where registrable domain is needed for DMARC/RDAP — API handles automatically but results may differ
- Network timeout if target domain DNS is slow to respond

## How this service works

Any website's tech stack and email security, one call. Tech stack, email security and domain age API + MCP: one call per domain, evidence included Try it free in one click, no sign-up.

## Output

A JSON object containing the domain's email security records (SPF, DKIM, DMARC policy and alignment details), identified technology stack components (CMS, analytics, hosting, etc.), domain age from RDAP registration data, and supporting DNS evidence used to derive each finding.

## 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",
     "properties": {
      "domain": {
       "type": "string",
       "description": "A domain, URL or email, or up to 5 separated by commas. Subdomains are kept for the website and DNS checks; DMARC and RDAP use the registrable domain."
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/domaindna-email-security-tech-stack-lookup-5a705e3c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from domaindna-api.cybermax-tools.workers.dev](https://www.zero.xyz/host/domaindna-api.cybermax-tools.workers.dev/llms.txt)