# Delx Is Email Shape

> Delx Is Email Shape is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Validates whether a string has a valid email address shape (syntax only, no network checks)

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/is-email-shape
- 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/delx-is-email-shape-e2950d5b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Zmriwr2dni1uuDIuHdlsE

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 delx-is-email-shape-e2950d5b -d '<json body>'
```

Example prompt: Before we enrich this lead, can you check if 'john.doe@example.com' is even a valid email shape — just the format, no network lookup needed?

## When to prefer this

Choose this endpoint when you need a fast, cheap ($0.001 USDC), zero-network syntactic check on email strings before committing to heavier enrichment or verification services. Ideal as a preflight filter in agent pipelines to reject obvious non-emails without MX lookups, SMTP handshakes, or API keys. Not suitable when you need to confirm deliverability or mailbox existence.

## Known failure modes

- Missing or empty email field returns an error
- Non-string input may be rejected
- Payment failure via x402 protocol will block the call
- Ambiguous or borderline RFC-edge-case emails may return unexpected results

## How this service works

Validate email shape (not mailbox existence). Call when you cheaply reject obvious non-emails before enrichment. Returns valid boolean for $0.001 USDC via x402 on Base. Shape only—not MX, SMTP, or ownership proof. No network, no keys, no retention. Results are advisory; the caller owns budgets, auth, and production controls.

## Output

A boolean field indicating whether the input string conforms to a valid email address shape. Does not verify mailbox existence, MX records, SMTP reachability, or domain ownership — purely structural/syntactic validation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "email": {
   "type": "string",
   "description": "Input field: email."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "email": "ops@delx.ai",
  "valid": true,
  "schema": "delx/util-is-email-shape/v1"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-is-email-shape-e2950d5b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)