# Services from verify.reversecaptcha.fun on Zero

> verify.reversecaptcha.fun serves 6 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/verify.reversecaptcha.fun
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/verify.reversecaptcha.fun/health.json

## Services

- [Proofwire HTTP URL Verification](https://www.zero.xyz/c/proofwire-http-url-verification-1b2ed2fc/llms.txt): $0.001/call via x402. Checks whether a URL is alive and returns a signed verdict with redirect chain, TLS status, latency, and body hash
- [Proofwire DNS Verification](https://www.zero.xyz/c/proofwire-dns-verification-c5dd6904/llms.txt): $0.002/call via x402. Resolves DNS records for a domain and parses SPF, DMARC, and DKIM configuration, returning a signed verdict with evidence
- [Proofwire Email Delivery Verification](https://www.zero.xyz/c/proofwire-email-delivery-verification-8ad47b1e/llms.txt): $0.01/call via x402. Polls a Proofwire seed inbox to confirm email delivery and returns SPF/DKIM/DMARC authentication alignment results with Ed25519-signed evidence
- [Proofwire Webhook Tripwire Armer](https://www.zero.xyz/c/proofwire-webhook-tripwire-armer-ff2bb859/llms.txt): $0.005/call via x402. Arms a one-time webhook tripwire URL that detects when an upstream system fires a callback, returning a signed verdict on delivery
- [Proofwire Email Inbox Provisioning](https://www.zero.xyz/c/proofwire-email-inbox-provisioning-2e933497/llms.txt): $0.001/call via x402. Issues a disposable seed email address that an agent can receive mail to, then check for delivery confirmation with SPF/DKIM/DMARC alignment
- [Proofwire Page Verification (Browser Render & Assert)](https://www.zero.xyz/c/proofwire-page-verification-browser-render-assert-ef81b95c/llms.txt): $0.01/call via x402. Renders a URL in a real browser, asserts presence of a CSS selector or text, and returns a signed verdict with screenshot evidence.

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)