# Services from echoempire-demand-gateway.echoempire-in-co.workers.dev on Zero

> echoempire-demand-gateway.echoempire-in-co.workers.dev serves 3 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/echoempire-demand-gateway.echoempire-in-co.workers.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/echoempire-demand-gateway.echoempire-in-co.workers.dev/health.json

## Services

- [EchoEmpire Email MX Lookup & Validation](https://www.zero.xyz/c/echoempire-email-mx-lookup-validation-f0b9872b/llms.txt): $0.003/call via x402. Validates an email address by checking MX records, syntax, disposability, and deliverability — pay-per-call via USDC with no account required.
- [EchoEmpire URL Probe](https://www.zero.xyz/c/echoempire-url-probe-bd0e8122/llms.txt): $0.002/call via x402. Probes an HTTP/HTTPS URL and returns its status code, final URL after redirects, content type, and response time — paid per-call in USDC via x402.
- [EchoEmpire Page Metadata Extractor](https://www.zero.xyz/c/echoempire-page-metadata-extractor-9e7c1a22/llms.txt): $0.003/call via x402. Fetches and returns structured metadata (title, description, Open Graph, Twitter Card, canonical URL, language) from any public HTML page URL, paid per-call in USDC via x402.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)