# Agent Tools Batch Email Validation

> Agent Tools Batch Email Validation is a paid API for AI agents from agents.crowdspark.me, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-31).

Validates up to 10 email addresses in a single call, checking syntax, MX records, disposable/role/free-provider status, and returning a deliverability guess per address.

## Facts

- Endpoint: POST https://agents.crowdspark.me/v1/email/check/batch?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-tools-batch-email-validation-265de088
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zPw3hggROXYClRWgUqilQ

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 agent-tools-batch-email-validation-265de088 -d '<json body>'
```

Example prompt: Can you validate these 5 emails for me — jane@acme.com, bob@mailinator.com, info@example.org, test@guerrillamail.com, and ceo@bigcorp.com — and tell me which ones are likely deliverable, which are disposable, and which are role addresses?

## When to prefer this

Choose this batch endpoint over the single-address endpoint when you have 2–10 emails to validate at once — it is 40% cheaper per address than calling the single-check endpoint repeatedly. Prefer it for list-cleaning pipelines, CRM imports, bulk signups, and any workflow where you collect emails in groups. Use the single-address endpoint only for real-time, one-at-a-time validation (e.g. live signup form field). For deeper domain health analysis beyond MX checks, consider the one-call email risk endpoint instead.

## Known failure modes

- Providing more than 10 emails returns a validation error
- Malformed JSON body causes a 400 error
- Empty emails array returns an error
- Network timeout on slow MX DNS lookups
- Individual email items that are unparseable return per-item errors with ok:false rather than failing the whole batch

## How this service works

Pay-per-call utilities for AI agents over x402, USDC on Base.

## Output

Returns a JSON object with a count of addresses checked, number succeeded and failed, and a results array where each item includes the original input email, an ok flag, and (on success) a result object containing deliverable_guess (e.g. 'likely', 'risky', 'unknown') plus boolean flags for disposable, role, and free-provider status. Failed items return a per-item error without failing the entire call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "emails": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "maxItems": 10,
   "description": "1 to 10 email addresses"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 2,
  "failed": 0,
  "results": [
   {
    "ok": true,
    "input": "jane@acme.com",
    "result": {
     "deliverable_guess": "likely"
    }
   },
   {
    "ok": true,
    "input": "bob@mailinator.com",
    "result": {
     "disposable": true,
     "deliverable_guess": "risky"
    }
   }
  ],
  "succeeded": 2
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-tools-batch-email-validation-265de088/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.crowdspark.me](https://www.zero.xyz/host/agents.crowdspark.me/llms.txt)