# RDAPWatch — Domain Health Monitoring

> Free instant checks and continuous monitoring for domain health: SSL/TLS, email
> blacklists (25 DNSBLs), email authentication (SPF/DKIM/DMARC), domain registration
> and DNS. One 0-100 report. Monitoring from $5/mo.

## Free tools (no signup)
- [Domain Blacklist Check](https://rdapwatch.com/tools/blacklist-check): a domain + its mail IPs against 25 DNSBLs
- [SPF Checker](https://rdapwatch.com/tools/spf-checker): validate SPF, count DNS lookups vs the 10 limit
- [DKIM Checker](https://rdapwatch.com/tools/dkim-checker): verify DKIM by selector (auto-probe or custom)
- [DMARC Checker](https://rdapwatch.com/tools/dmarc-checker): DMARC policy strength (none/quarantine/reject)
- [SSL Checker](https://rdapwatch.com/tools/ssl-checker): certificate expiry, chain, hostname coverage
- [Domain Age Checker](https://rdapwatch.com/tools/domain-age-checker): creation date, age, expiry
- [Domain Health Check](https://rdapwatch.com/tools/domain-health-check): all five checks in one scored report

## Report
- [Full report](https://rdapwatch.com/report/{domain}): all five checks + a 0-100 score for any domain

## Monitoring (paid, from $5/mo)
- [Domain Monitoring](https://rdapwatch.com/domain-monitoring)
- [SSL Monitoring](https://rdapwatch.com/ssl-monitoring)
- [DNS Monitoring](https://rdapwatch.com/dns-monitoring)
- [Blacklist Monitoring](https://rdapwatch.com/blacklist-monitoring)
- [Pricing](https://rdapwatch.com/pricing)

## Guides
- [Blog](https://rdapwatch.com/blog)
- [Methodology](https://rdapwatch.com/methodology): what each check reads, the standard behind every pass/warn/fail threshold, and how the 0-100 score is weighted

## API & MCP (for developers and AI agents)
- [API & MCP docs](https://rdapwatch.com/docs/api): full reference
- JSON API: `GET https://api.rdapwatch.com/v1/check/{domain}` — bearer-authenticated (Authorization: Bearer rw_sk_…), returns all five checks + a 0-100 score. Optional `?checks=ssl,dns` subset. Per-plan daily quota with X-RateLimit-* headers. Create keys in the dashboard.
- MCP server: `https://mcp.rdapwatch.com/mcp` (Streamable HTTP, no auth). Tools: check_domain_health, check_ssl, check_blacklist, check_email_auth, check_domain_registration, check_dns. Each takes { domain }.
- Status badge: `https://rdapwatch.com/badge/{domain}.svg` — embeddable live health-score badge.