# ScriptMasterLabs Email Validate API (x402)

> ScriptMasterLabs Email Validate API (x402) is a paid API for AI agents from acp-x402-discovery.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Validates an email address for deliverability and correctness, settled via x402 micropayment in USDC on Base.

## Facts

- Endpoint: GET https://acp-x402-discovery.onrender.com/x402/email-validate
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/scriptmasterlabs-email-validate-api-x402-cd0a9f99
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NODc2-EuuyVNlKBxyY3kQ

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 scriptmasterlabs-email-validate-api-x402-cd0a9f99
```

Example prompt: Can you check if the email address john.doe@example.com is valid and deliverable before I add it to my mailing list?

## When to prefer this

Choose this endpoint when you need a pay-per-use email validation with no subscription commitment, billed in USDC on Base via the x402 micropayment protocol. Ideal for agents that need occasional or burst email verification without managing API keys or monthly plans. Best when operating in a crypto-native or Web3 stack already using x402 payments.

## Known failure modes

- Missing or malformed email parameter returns an error response
- Unresolvable or offline mail server may return inconclusive deliverability status
- Payment failure via x402 (insufficient USDC balance) blocks the request
- Rate limiting if too many requests are made in quick succession
- Temporary DNS lookup failures may produce uncertain results for valid addresses

## How this service works

Pay-per-call crypto, RWA, federal, SEC, and compliance APIs. Settled in USDC on Base via x402. Hyphen routes only (e.g. /x402/rwa-aggregates, /x402/gas-tracker).

## Output

Returns a validation result indicating whether the email address is syntactically correct, the domain exists and accepts mail, and whether the address is likely deliverable or is a disposable/fake address. Response is a JSON object with validation fields.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/scriptmasterlabs-email-validate-api-x402-cd0a9f99/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from acp-x402-discovery.onrender.com](https://www.zero.xyz/host/acp-x402-discovery.onrender.com/llms.txt)