# Email Normalize Tool – GPT55 x402 Gateway

> Email Normalize Tool – GPT55 x402 Gateway is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.0001/call, status unknown (last checked 2026-09-15).

Normalizes and validates the shape of an email address, returning a cleaned canonical form via a micropayment-gated API.

## Facts

- Endpoint: GET https://gpt55.558686.xyz/v1/tools/email-normalize
- Price: $0.0001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/email-normalize-tool-gpt55-x402-gateway-4504f390
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_e-TLaxUpr84HEsSpALmIJ

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-normalize-tool-gpt55-x402-gateway-4504f390
```

Example prompt: Can you normalize and validate the email address 'User.Name+tag@Example.COM' so I know what the canonical form looks like?

## When to prefer this

Use this endpoint when you need a lightweight, pay-per-call (no subscription) email normalization check and want to avoid integrating a heavier validation library. Ideal for agents that need occasional email cleanup without a persistent API key or monthly fee, paying only $0.0001 USDC per call via x402 on Base.

## Known failure modes

- Missing required 'email' query parameter returns a 400-style error
- Email string exceeding 320 characters is rejected by schema validation
- Malformed input object causes schema validation failure
- Payment not received or insufficient USDC balance returns 402 Payment Required
- Service downtime or upstream gateway failure returns 5xx

## How this service works

Trim, split, and normalize a simple email address shape without sending mail, DNS checks, or upstream model calls. Pay up to $0.001 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.

## Output

Returns a JSON object with ok (boolean), tool name ('emailNormalize'), a summary string, and a fetchedAt timestamp indicating when the normalization was performed. The normalized/validated email shape is provided in the response body.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "email": "user.name+tag@example.com"
  }
 }
}
```

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "additionalProperties": true
    },
    "queryParams": {
     "type": "object",
     "required": [
      "email"
     ],
     "properties": {
      "email": {
       "type": "string",
       "maxLength": 320,
       "minLength": 1
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "tool": {
       "type": "string"
      },
      "fetchedAt": {
       "type": "string"
      }
     },
     "additionalProperties": true
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/email-normalize-tool-gpt55-x402-gateway-4504f390/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gpt55.558686.xyz](https://www.zero.xyz/host/gpt55.558686.xyz/llms.txt)