# Email Verification & Validation API

> Email Verification & Validation API is a paid API for AI agents from agent-data.centorprat.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).

Validates up to 20 email addresses per call, checking syntax, MX records, mailbox provider, disposable domains, role accounts, and typos, returning a verdict of valid/risky/invalid with a confidence score.

## Facts

- Endpoint: GET https://agent-data.centorprat.workers.dev/email/verify?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/email-verification-validation-api-f56b698e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fQQQ_FrQJDm8MGXb0LJy7

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-verification-validation-api-f56b698e
```

Example prompt: Can you verify these emails from my lead list — john.doe@gmial.com, info@tempmail.org, sales@acme.com — and tell me which are valid, risky, or invalid, plus flag any typos or disposable domains?

## When to prefer this

Choose this endpoint when you need fast, privacy-safe email validation without SMTP probing or sending any mail — ideal for pre-send list hygiene, sign-up validation, or CRM enrichment workflows. It handles up to 20 addresses per call with ~1s latency, covers disposable domain detection (~10k known domains), typo correction, and mailbox provider identification, making it suitable for both single-address real-time checks and small-batch lead list processing.

## Known failure modes

- More than 20 email addresses submitted in one call — request rejected or truncated
- Malformed email input string — validation error returned
- Network timeout or worker error — HTTP 5xx response
- Invalid query parameter format — missing or empty 'email' param returns error
- Unknown or very new domain — MX lookup may be inconclusive, result marked risky

## How this service works

Pay-per-call data and tools for AI agents, $0.002-0.01 per call in USDC via x402 (Base, Polygon or Solana), no account or API key; MAX tiers ($0.05-0.25) run deeper jobs. Agent toolkit: web search, search + read top pages, any page as clean markdown with a prompt-injection check, which-x402-API-to-call recommender, seller check. Data: Google Maps places with contacts, YouTube video data and transcripts, job listings (Indeed, LinkedIn, 13 boards), Google Ads Transparency, TikTok comments, Pinterest, Airbnb, Redfin, AliExpress, app stores, live sports, website and SEO checks, Shopify store tech stacks, and onchain token / address risk checks.

## Output

Returns per-address results including: a verdict (valid, risky, or invalid), a confidence score, the detected mailbox provider (e.g. Google, Microsoft, Zoho), flags for disposable/temporary domain, free webmail, and role account, plus a typo suggestion if the domain looks misspelled. No SMTP probing is performed and no email is sent.

## 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": [
      "email"
     ],
     "properties": {
      "email": {
       "type": "string",
       "description": "1-20 email addresses, comma separated"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "results": [
   {
    "email": "john@gmial.com",
    "score": 0,
    "reasons": [
     "possible typo of gmail.com"
    ],
    "verdict": "invalid",
    "didYouMean": "john@gmail.com"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/email-verification-validation-api-f56b698e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-data.centorprat.workers.dev](https://www.zero.xyz/host/agent-data.centorprat.workers.dev/llms.txt)