# Email DNS Preflight

Cheap x402-paid email/domain hygiene for autonomous agents.

## Paid capability

- POST /v1/email/preflight with JSON {"email":"alice@example.com"}
- GET /v1/email/preflight?email=alice%40example.com
- GET /v1/domain/preflight?domain=example.com
- GET /v1/domain/rdap?domain=example.com
- Price: $0.001 USDC per successful paid call
- Network: Base mainnet (eip155:8453)

## Returns

Practical email syntax; A/AAAA/MX/TXT/NS/CNAME/SOA/CAA; SPF/DMARC; common-selector DKIM heuristic; MTA-STS; TLS-RPT; DNSSEC; RDAP/WHOIS-successor domain age, registrar and expiry; bounded posture grade and risk flags.

## Limits

DNS-level only. It does not perform SMTP mailbox-existence verification and does not claim inbox delivery.

OpenAPI: https://email-dns-preflight-x402.copper-crate.workers.dev/openapi.json
AgentCard: https://email-dns-preflight-x402.copper-crate.workers.dev/.well-known/agent-card.json
x402 manifest: https://email-dns-preflight-x402.copper-crate.workers.dev/.well-known/x402