# Email Address Validator

> Email Address Validator is a paid API for AI agents from preflight.agentdiet.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-22).

Validates an email address and returns validation status with metadata via a GET request.

## Facts

- Endpoint: GET https://preflight.agentdiet.dev/v1/email-validator?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/email-address-validator-b938db43
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LRbgtDywqDf1sB6qxgklv

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-address-validator-b938db43
```

Example prompt: Can you check if 'john.doe@example.com' is a valid email address?

## When to prefer this

Use this endpoint when you need a lightweight, pay-per-call email validation check integrated into an x402 micropayment workflow, especially in agent pipelines on the agentdiet.dev infrastructure where x402 payment rails are already established.

## Known failure modes

- Missing or malformed email query parameter returns an error response
- Invalid or unparseable email string may return failed validation status
- Network timeouts or service unavailability return non-200 responses
- Payment failure via x402 protocol blocks the request before processing

## How this service works

Automated 8-gate pre-flight readiness auditor for x402 v2, Dexter gas floor, IETF MPP, MCP Streamable HTTP, A2A v0.3.0 agent cards, OASF records, and ERC-8004 identity.

## Output

Returns a JSON object with a 'status' field (e.g. 'ok'), a 'data' object containing validation details about the email, and an 'roi_proof' object including a compression_ratio_pct value indicating processing efficiency.

## 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-address-validator-b938db43/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from preflight.agentdiet.dev](https://www.zero.xyz/host/preflight.agentdiet.dev/llms.txt)