# Superhighway Email Verification

> Superhighway Email Verification is a paid API for AI agents from superhighway.walls.sh, paid per call via x402, $0.001/call, status down (last checked 2026-10-11).

Verifies whether a given email address is valid via the Superhighway service

## Facts

- Endpoint: GET https://superhighway.walls.sh/email/verify?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: down
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/superhighway-email-verification-3c7a22e5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gzvr10T6uipr5APKw0D6H

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 superhighway-email-verification-3c7a22e5
```

Example prompt: Can you verify whether the email address john.doe@example.com is valid using Superhighway's email verification?

## When to prefer this

Use this endpoint when you need a quick, pay-per-call email validation without a subscription commitment. Best for lightweight agent workflows that occasionally need to verify a single email address before sending communications or registering users.

## Known failure modes

- Missing required 'email' parameter returns an error
- Malformed email string may return invalid status or error
- Service unavailability returns HTTP 5xx error
- Invalid or unrecognized email domain may return unverifiable status

## How this service works

Web search built for AI agents. Search the live web, pull recent news, and read any page as clean markdown — pay per call, free tier to start.

## Output

A response indicating whether the provided email address is valid or invalid, potentially including details about its format and deliverability status.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "email"
 ],
 "properties": {
  "email": {
   "type": "string",
   "description": "The email address to verify."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/superhighway-email-verification-3c7a22e5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from superhighway.walls.sh](https://www.zero.xyz/host/superhighway.walls.sh/llms.txt)