# Stamp

> Stamp checks a domain's email authentication from live DNS: SPF with the 10-lookup limit, DMARC, DKIM keys and MX. It says whether you meet the Gmail, Yahoo and Outlook sender rules and gives you the exact DNS records to fix what is wrong. No account.

- **Domain**: `stamp.clawhard.com`
- **Provider**: Clawhard Studio (https://clawhard.com)
- **A2A protocol version**: 1.0
- **Kind**: a2a_agent
- **Category**: verification
- **Live-responds (last probe)**: True
- **Signed card**: False
- **Streaming**: False
- **Quality score**: 100%

## Skills
- **Check a domain's email authentication (SPF, DKIM, DMARC, MX) from live DNS** — Use when the user asks why their email goes to spam, whether their domain is set up to send email, or before they launch a newsletter, cold outreach, transactio
- **Check an SPF, DMARC or DKIM record before publishing it** — Use when you or the user are about to publish or edit an SPF, DMARC or DKIM TXT record, for example after writing a new SPF record that adds a sending service, 

## URLs
- Agent card: https://stamp.clawhard.com/.well-known/agent-card.json
- Page (HTML): https://agenstry.com/agents/stamp.clawhard.com
- Documentation: https://stamp.clawhard.com/llms.txt