# AgentDiet Email Verification

> AgentDiet Email Verification is a paid API for AI agents from prompt-guard-72343955726.us-central1.run.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-14).

Verifies whether an email address is valid, deliverable, and safe to contact

## Facts

- Endpoint: GET https://prompt-guard-72343955726.us-central1.run.app/v1/email-verify?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentdiet-email-verification-9fc0864d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9Ho2wKY0qPp5cHQ8MSZS8

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 agentdiet-email-verification-9fc0864d
```

Example prompt: Can you check whether john.smith@acme.com is a valid, deliverable email address before I add it to my outreach list?

## When to prefer this

Choose this endpoint when you need lightweight, pay-per-call email validation at $0.005 USDC without a subscription, especially within an agent workflow that already uses the AgentDiet B2A hub for other intelligence tasks like lead enrichment or domain OSINT. Ideal for single-address spot checks rather than bulk list processing.

## Known failure modes

- Invalid or missing email parameter returns an error status
- Non-existent domain causes domain lookup failure
- Rate limiting if too many requests are made in quick succession
- Payment failure via x402 if insufficient USDC balance
- Temporary DNS lookup failures for certain domains
- Ambiguous results for catch-all mail servers that accept all addresses

## How this service works

15-App Autonomous Business-to-Agent (B2A) API Hub & MCP Suite. Supports Web Distillation, On-Chain Risk, DEX Token Intelligence, B2B Lead Enrichment, Domain OSINT, Email Verification, SEC Filings, GitHub Audits, Prompt Firewall, and native HTTP 402 (x402 Base USDC).

## Output

Returns a JSON object with validation status, deliverability indicators, format check results, domain existence confirmation, and risk signals such as whether the address is disposable or high-risk. Also includes an ROI proof object showing token compression metrics.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "mode": "markdown",
   "title": "Example Documentation",
   "content": "# Example Documentation\nClean agent-ready markdown..."
  },
  "status": "ok",
  "roi_proof": {
   "raw_tokens": 14200,
   "tokens_saved": 13520,
   "roi_multiplier": 67.6,
   "distilled_tokens": 680,
   "compression_ratio_pct": 95.2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentdiet-email-verification-9fc0864d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from prompt-guard-72343955726.us-central1.run.app](https://www.zero.xyz/host/prompt-guard-72343955726.us-central1.run.app/llms.txt)