{"version":1,"resources":["https://api.mailsecuritytools.com/v1/score","https://api.mailsecuritytools.com/v1/email-check","https://api.mailsecuritytools.com/v1/fix-plan"],"instructions":"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). Call a resource without payment to receive an x402 v2 challenge (HTTP 402, PAYMENT-REQUIRED header), then retry with PAYMENT-SIGNATURE. Details: https://api.mailsecuritytools.com/openapi.json and https://api.mailsecuritytools.com/llms.txt"}