# Agent Toolbox Email Verifier

> Agent Toolbox Email Verifier is a paid API for AI agents from agent-toolbox.zafermemon87.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-30).

Validates an email address by checking format, domain existence, MX records, and classifying it as valid, risky, or invalid without probing the mailbox.

## Facts

- Endpoint: GET https://agent-toolbox.zafermemon87.workers.dev/v1/email-verify?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-toolbox-email-verifier-c6d57ce8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oRo163t5lzV2Z2ZpY4mHJ

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-toolbox-email-verifier-c6d57ce8
```

Example prompt: Can you check whether the email address john.doe@tempmail.com is valid, and tell me if it's from a disposable or free provider and whether it's risky?

## When to prefer this

Use this endpoint when you need a fast, non-intrusive email quality check that goes beyond simple regex validation — especially to catch disposable, role, or free-provider addresses before adding them to a list or database. Prefer this over full SMTP probing when you cannot or do not want to make live mailbox connections, or when you need a simple valid/risky/invalid verdict for gating logic.

## Known failure modes

- Malformed or missing email query parameter returns an error
- Domain exists but has no MX records, flagged as invalid
- Newly registered disposable domain not yet in blocklist may pass as valid
- Network issues resolving DNS may cause transient failures
- Very new legitimate domains may be incorrectly flagged as suspicious

## How this service works

Check an email address: format, whether the domain exists and accepts mail (MX records), disposable providers, role accounts and free providers, with a valid / risky / invalid verdict. The mailbox itself is not probed.

## Output

Returns a structured verdict (valid, risky, or invalid) along with individual flags indicating whether the email format is correct, whether the domain exists and has valid MX records, whether the provider is disposable, whether the address is a role account (e.g. info@, support@), and whether it belongs to a free email provider. The mailbox itself is not probed.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "email"
     ],
     "properties": {
      "email": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-toolbox-email-verifier-c6d57ce8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-toolbox.zafermemon87.workers.dev](https://www.zero.xyz/host/agent-toolbox.zafermemon87.workers.dev/llms.txt)