# Email Verification via AgentDiet MCP Gateway

> Email Verification via AgentDiet MCP Gateway is a paid API for AI agents from mcp-gateway.agentdiet.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-23).

Verifies whether an email address is valid and deliverable

## Facts

- Endpoint: GET https://mcp-gateway.agentdiet.dev/v1/email-verify?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/email-verification-via-agentdiet-mcp-gateway-f518be12
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_x4sx8iJi1T028zRI9KqRM

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-via-agentdiet-mcp-gateway-f518be12
```

Example prompt: Can you verify whether john.doe@example.com is a real, valid email address before I add it to my list?

## When to prefer this

Use this endpoint when you need a pay-per-use, crypto-settled (USDC on Base) email verification call without a subscription to a dedicated email validation service. It is well-suited for AI agents operating in agentic workflows that already use x402 payment rails, MCP tooling, or need lightweight email validation as part of a larger automated pipeline.

## Known failure modes

- Missing email query parameter returns an error response
- Invalid or malformed email string may return a negative validation result
- Payment failure via x402/USDC settlement blocks the request
- Network timeout from upstream verification provider
- Rate limiting if too many requests are made in quick succession

## How this service works

Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://mcp-gateway.agentdiet.dev settling in USDC on Base.

## Output

Returns a JSON object with a status field ('ok') and a data object containing the verification result, plus an roi_proof field indicating compression efficiency. The data object holds the actual email validation details such as validity, deliverability, and format checks.

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "status": "ok",
  "roi_proof": {
   "compression_ratio_pct": 91.4
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/email-verification-via-agentdiet-mcp-gateway-f518be12/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-gateway.agentdiet.dev](https://www.zero.xyz/host/mcp-gateway.agentdiet.dev/llms.txt)