{"name":"Mail Security Tools API","summary":"Free DMARC, SPF, DKIM and MX checks for any domain, from mailsecuritytools.com. Paid (x402 USDC on Base): a $0.01 graded email security score, a $0.01 email address check, and a $1 email security fix plan with the exact DNS records to publish. MCP server at /mcp. Daily monitoring: InboxGuards (inboxguards.com).","site":"https://mailsecuritytools.com","network":"eip155:8453","pay_to":"0x2dAF658B01e257206375798a15832E9f547D65dD","free":["GET /v1/check?domain=","GET /v1/dmarc?domain=","GET /v1/spf?domain=","GET /v1/mx?domain=","GET /v1/dkim?domain=&selector="],"paid":{"GET /v1/score?domain=":"$0.01","GET /v1/email-check?email=":"$0.01","GET /v1/fix-plan?domain=":"$1"},"mcp":"/mcp","discovery":{"openapi":"/openapi.json","x402":"/.well-known/x402","llms":"/llms.txt"},"monitoring":{"name":"InboxGuards","url":"https://inboxguards.com/?utm_source=mailsecuritytools&utm_medium=api","pitch":"Want this watched every day, with alerts when SPF, DKIM or DMARC break? InboxGuards monitors it for you."}}