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MCP connectors by dev.workers.cybermax-tools.cybermax
GET /v1/connectors – MCP directory API referenceTech stack, email security (SPF, DMARC, MX provider) and domain age API + MCP. 25 free domains/day.
DomainDNA: a domain's tech stack, mail provider, SPF/DMARC, domain age and TLS in one record.