# VerifyPulse Email Verification API

> VerifyPulse Email Verification API 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).

Validates a single email address for RFC syntax, live MX DNS resolution, disposable domain filtering, and SMTP deliverability in sub-140ms

## Facts

- Endpoint: GET https://verifypulse-seven.vercel.app/v1/x402/verify-email?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-email-verification-api-92750365
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Xw3R0cX3WMPpvfxsq56vZ

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-email-verification-api-92750365
```

Example prompt: Can you verify whether founder@stripe.com is a real, deliverable email — check the MX records and run an SMTP handshake on it?

## When to prefer this

Choose VerifyPulse when you need real-time, single-address B2B email verification with sub-140ms latency and want combined syntax, DNS MX, disposable domain filtering, and SMTP simulation in a single call. Prefer it over bulk verification services when validating one address at a time in an automated workflow or at point-of-capture (e.g. form submission, CRM enrichment, pre-send validation). It is especially suited for B2B use cases where deliverability accuracy and speed matter, and when a pay-per-call micropayment model (via x402) is acceptable.

## Known failure modes

- Invalid or malformed email input returns a low score and 'invalid' status
- Domain has no MX records — mx_found returns false and SMTP check fails
- Disposable domain match triggers 'risky' or 'invalid' status despite valid syntax
- SMTP server is unreachable or times out — smtp_check may return 'unknown' or 'fail'
- Payment authorization failure (x402) results in a 402 response before verification runs
- Rate limiting or quota exceeded returns a 429 error

## 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 the validated email address, a numeric deliverability score (0–100), a status label (e.g. 'valid', 'invalid', 'risky'), a boolean indicating whether MX records were found, and the result of the simulated SMTP handshake ('pass' or 'fail').

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "email": "founder@stripe.com",
  "score": 98,
  "status": "valid",
  "mx_found": true,
  "smtp_check": "pass"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/verifypulse-email-verification-api-92750365/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)