"Security" matching MCP connectors:

ProofNexa B2B and Quant Risk GateA

app.vercel.quant-b2b-risk-gate-api

Serverless 15-tool B2B email deliverability, domain security, OpenAPI breaking-change release gate, LLMO /llms.txt auditor, and quantitative trading risk MCP connector.

Assess any domain's email security across SPF, DMARC, DKIM, MTA-STS, DNSSEC, DANE, and TLS-RPT.

Domain checks: SPF, DKIM, DMARC, BIMI, MTA-STS, SSL/TLS and HTTP security headers.

AstraVerify Domain Trust CheckA

com.astraverify

Email security and AI discoverability scores for any domain, with the exact record or tag to fix.

FallaxA

io.fallax

Fallax is a phishing simulation and security awareness training platform. Read your results.

BlackVeil DNS & Email Security ScannerA

com.blackveilsecurity

DNS and email security scanner with 81 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.

Pay-per-call domain and email security check: SPF, DKIM, DMARC, TLS, DNSSEC, BIMI, with exact fixes.

DMARC/SPF/DKIM/MX checks, email score, 100-domain bulk score, webhook watch alerts (x402 USDC).

Paid email, DNS, mail-security and RDAP intelligence for agents over x402.