# The Stall Email Verify

> The Stall Email Verify is a paid API for AI agents from the-stall.intuitek.ai, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-11).

Validates an email address for format correctness and deliverability using a pay-per-call x402 API requiring no account or API key

## Facts

- Endpoint: GET https://the-stall.intuitek.ai/cap/email-verify?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/the-stall-email-verify-42703f10
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YQvg_uo3o9Oa06vaMn3hv

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 the-stall-email-verify-42703f10
```

Example prompt: Can you verify whether 'john.doe@acmecorp.com' is a valid, deliverable email address before I add it to our outreach list?

## When to prefer this

Choose this endpoint when you need a lightweight, no-account-required email validation check paid per-call in USDC, ideal for agents that only occasionally need to verify emails without committing to a subscription-based email validation API.

## Known failure modes

- Missing required 'email' query parameter — returns 400 or error response
- Malformed email string passed — may return invalid format error
- Payment not completed via x402 USDC on Base — returns 402 Payment Required
- Network timeout or upstream service unavailability — returns 5xx error
- Disposable or role-based email detection may produce false positives

## How this service works

Email address validation and quality scoring. Checks RFC-5322 syntax, detects disposable/throwaway domains (via Kickbox free API), and verifies DNS MX record presence (via Cloudflare DoH). Returns a quality score (0-100) and verdict: DELIVERABLE | RISKY | UNDELIVERABLE | INVALID. Useful for lead qualification, form validation, and filtering bot signups.

## Output

Returns a validation result indicating whether the given email address is properly formatted and likely deliverable, potentially including details such as domain validity, MX record presence, disposable email detection, or syntax errors.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "email": "test@example.com"
  }
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/the-stall-email-verify-42703f10/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from the-stall.intuitek.ai](https://www.zero.xyz/host/the-stall.intuitek.ai/llms.txt)