# VerifyPulse DNS Audit — Domain Email Deliverability Check

> VerifyPulse DNS Audit — Domain Email Deliverability Check is a paid API for AI agents from verifypulse-seven.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Audits a domain's DNS email configuration (SPF, DMARC, MX) and returns a deliverability health score in real time.

## Facts

- Endpoint: GET https://verifypulse-seven.vercel.app/v1/x402/dns-audit?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/verifypulse-dns-audit-domain-email-deliverability-check-de04f237
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_P9eV-_VpmIGI7NbGp1Zjk

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 verifypulse-dns-audit-domain-email-deliverability-check-de04f237
```

Example prompt: Can you audit the DNS email configuration for stripe.com and tell me their deliverability score, DMARC policy, and how many SPF lookups they're using?

## When to prefer this

Use this endpoint when you need a fast, structured DNS-level audit of a specific domain's email authentication posture — particularly SPF lookup count and DMARC policy — without needing to validate an individual email address. Prefer this over full email verification endpoints when your goal is domain-level deliverability health scoring for outreach list hygiene, partner vetting, or pre-campaign infrastructure checks.

## Known failure modes

- Invalid or non-existent domain returns an error or zero score
- Domains with no MX records may return incomplete results
- DNS resolution timeouts for slow-responding nameservers
- Malformed domain strings (missing TLD, spaces) cause validation errors
- Private/internal domains that are not publicly resolvable will fail lookup

## How this service works

VerifyPulse is a high-speed B2B email verification engine. Validate RFC syntax, resolve live DNS MX records, filter 3,800+ disposable domains, and run simulated SMTP handshakes in sub-140ms. Stop bounces before sending.

## Output

Returns a JSON object containing a numeric deliverability score (0–100), the audited domain name, the number of SPF DNS lookups consumed out of the allowed 10, and the DMARC policy setting (e.g. 'reject', 'quarantine', 'none').

## 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",
     "properties": {
      "domain": {
       "type": "string",
       "description": "Parameter domain (e.g. openai.com)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "score": 100,
  "domain": "openai.com",
  "spf_lookups": "3/10",
  "dmarc_policy": "reject"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/verifypulse-dns-audit-domain-email-deliverability-check-de04f237/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from verifypulse-seven.vercel.app](https://www.zero.xyz/host/verifypulse-seven.vercel.app/llms.txt)